{"id":4516,"date":"2026-08-04T14:41:41","date_gmt":"2026-08-04T06:41:41","guid":{"rendered":"https:\/\/www.solidess.com\/?p=4516"},"modified":"2026-08-04T14:42:45","modified_gmt":"2026-08-04T06:42:45","slug":"pourquoi-un-bess-echoue-a-son-test-de-capacite-sans-declencher-dalarme","status":"publish","type":"post","link":"https:\/\/www.solidess.com\/fr\/why-a-bess-fails-its-capacity-test-without-an-alarm\/","title":{"rendered":"Why a BESS Fails Its Capacity Test Without an Alarm"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"4516\" class=\"elementor elementor-4516\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bf4793c e-con-full auto-article-root e-flex e-con e-parent\" data-id=\"bf4793c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c19f9202 auto-image elementor-widget elementor-widget-image\" data-id=\"c19f9202\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"1000\" src=\"https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/Why-a-BESS-Fails-Its-Capacity-Test-Without-an-Alarm.png\" class=\"attachment-1536x1536 size-1536x1536 wp-image-4513\" alt=\"MegSolid engineer investigating a BESS capacity test failure during site acceptance testing\" srcset=\"https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/Why-a-BESS-Fails-Its-Capacity-Test-Without-an-Alarm.png 1000w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/Why-a-BESS-Fails-Its-Capacity-Test-Without-an-Alarm-300x300.png 300w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/Why-a-BESS-Fails-Its-Capacity-Test-Without-an-Alarm-150x150.png 150w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/Why-a-BESS-Fails-Its-Capacity-Test-Without-an-Alarm-768x768.png 768w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/Why-a-BESS-Fails-Its-Capacity-Test-Without-an-Alarm-600x600.png 600w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/Why-a-BESS-Fails-Its-Capacity-Test-Without-an-Alarm-100x100.png 100w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-98a8953a auto-p elementor-widget elementor-widget-heading\" data-id=\"98a8953a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">A <strong>BESS capacity test failure<\/strong> without an active alarm does not automatically prove that the battery is defective. MegSolid begins by reconciling the contracted energy definition, start and stop conditions, test power, auxiliary loads, meter location and unavailable equipment with the recorded BMS, PCS and revenue-meter data.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0afc020a auto-p elementor-widget elementor-widget-heading\" data-id=\"0afc020a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">An alarm confirms that a configured threshold or protection rule was crossed. It does not confirm that the system delivered the guaranteed AC energy. A healthy-looking HMI can therefore coexist with a failed site acceptance test when the contractual test boundary and operating conditions are not aligned.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-acb74567 auto-p elementor-widget elementor-widget-heading\" data-id=\"acb74567\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\"><strong>In this guide, you will learn:<\/strong> how to define the tested kWh boundary, diagnose seven non-alarm shortfall causes, preserve the evidence needed for a defensible retest and convert the acceptance method into comparable EPC RFQ fields.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fa69fc29 elementor-tablet-align-center elementor-align-center auto-cta elementor-widget elementor-widget-button\" data-id=\"fa69fc29\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6Ijk0OCIsInRvZ2dsZSI6ZmFsc2V9\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Request a BESS Capacity-Shortfall Review<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1aa6aedd auto-h2 elementor-widget elementor-widget-heading\" data-id=\"1aa6aedd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">The Direct Answer: No Alarm Does Not Mean Full Capacity<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0953a767 auto-p elementor-widget elementor-widget-heading\" data-id=\"0953a767\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">The test can miss its energy target even when every component remains inside its local operating limits. Capacity is an integrated result across time; alarms usually describe instantaneous states. A small SOC-endpoint difference, continuous HVAC demand or a measurement boundary on the wrong side of the transformer can accumulate into a material shortfall without triggering a single fault.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b6c3122 elementor-widget-mobile__width-inherit auto-list elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"6b6c3122\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83c\udfaf <strong>SOC endpoints:<\/strong> The test did not begin at the approved upper condition or stop at the agreed lower condition.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u26a1 <strong>Measurement boundary:<\/strong> DC nameplate energy was compared with net AC energy at the PCS, transformer or PCC meter.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83c\udf21\ufe0f <strong>Operating conditions:<\/strong> Temperature, power level, voltage limits or site derating reduced the available window.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83c\udf00 <strong>Auxiliary demand:<\/strong> Cooling, pumps, controls, fire systems and transformers consumed energy inside the test boundary.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83d\udd0c <strong>Equipment availability:<\/strong> A string, rack, PCS block or auxiliary subsystem was available enough to avoid a trip but not fully available for the test.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u23f1\ufe0f <strong>Data integrity:<\/strong> Meter scaling, sign convention, sampling interval or clock alignment distorted the integrated result.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83e\uddea <strong>Test preparation:<\/strong> Balancing, thermal stabilization, rest time or complete charging was not achieved before discharge.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1266d940 auto-p elementor-widget elementor-widget-heading\" data-id=\"1266d940\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Commissioning should verify and document that the installed system meets defined objectives, not merely confirm that it can turn on. That principle is consistent with the <strong><a href=\"https:\/\/www.sandia.gov\/app\/uploads\/sites\/163\/2021\/09\/ESHB_Ch21_Commissioning_Schoenung.pdf\" target=\"_blank\" style=\"color:#61CE70\" rel=\"noopener\">DOE Energy Storage Handbook commissioning guidance<\/a><\/strong>, which treats commissioning as a gated evidence process tied to project requirements.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-efb85088 auto-h2 elementor-widget elementor-widget-heading\" data-id=\"efb85088\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Define Which Capacity the Contract Is Testing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-88a780ee auto-p elementor-widget elementor-widget-heading\" data-id=\"88a780ee\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">The word capacity is too vague for a pass\/fail clause. The EPC must define the electrical boundary, energy direction, time interval, approved SOC or voltage endpoints, auxiliary treatment and environmental conditions. For an AC delivery test, the measured energy is the time integral of real power at the named meter; the meter and sign convention must be stated before the test.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f36e278a auto-table elementor-widget elementor-widget-text-editor\" data-id=\"f36e278a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"cea-table-wrap\"><table><thead><tr><th>Capacity boundary<\/th><th>What it represents<\/th><th>Why the value changes<\/th><\/tr><\/thead><tbody><tr><td>Cell or rack DC energy<\/td><td>Energy inside the battery boundary<\/td><td>Excludes PCS, transformer and some auxiliary losses<\/td><\/tr><tr><td>PCS AC terminals<\/td><td>Energy converted by the PCS<\/td><td>Includes battery and PCS behavior but may exclude transformer and site auxiliaries<\/td><\/tr><tr><td>BESS transformer meter<\/td><td>Energy after conversion and transformer effects<\/td><td>Changes with transformer loss and the auxiliary connection point<\/td><\/tr><tr><td>Point of common coupling<\/td><td>Net energy delivered to the site or grid boundary<\/td><td>May include site load, PV, auxiliaries and other equipment unless isolated<\/td><\/tr><tr><td>Nameplate energy<\/td><td>Published nominal or rated storage value<\/td><td>Not automatically equal to usable or guaranteed AC delivery<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c03d841 auto-image elementor-widget elementor-widget-image\" data-id=\"6c03d841\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Test-Measurement-Boundary.png\" class=\"attachment-1536x1536 size-1536x1536 wp-image-4514\" alt=\"BESS capacity test measurement boundary from battery DC energy through PCS transformer auxiliaries and PCC meter\" srcset=\"https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Test-Measurement-Boundary.png 1000w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Test-Measurement-Boundary-300x225.png 300w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Test-Measurement-Boundary-768x576.png 768w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Test-Measurement-Boundary-600x450.png 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd5ee868 auto-p elementor-widget elementor-widget-heading\" data-id=\"fd5ee868\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Before comparing offers, use the <strong><a href=\"https:\/\/www.solidess.com\/fr\/achat-de-stockage-denergie-commercial\/\" target=\"_blank\" style=\"color:#61ce70\">commercial energy storage procurement guide<\/a><\/strong> to force every bidder onto the same power, energy and responsibility boundary. A price comparison is not valid when one supplier quotes nominal DC energy and another accepts net AC delivery at the PCC.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-52b71a3f auto-h2 elementor-widget elementor-widget-heading\" data-id=\"52b71a3f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Seven Causes of a BESS Capacity Shortfall<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63f9b961 auto-h3 elementor-widget elementor-widget-heading\" data-id=\"63f9b961\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. The SOC Endpoints Were Not Equivalent<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37b4e189 auto-p elementor-widget elementor-widget-heading\" data-id=\"37b4e189\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Displayed 100% SOC is an estimate governed by the BMS algorithm and approved operating limits; it is not proof that every string reached an identical electrochemical state. Likewise, the discharge may stop because one string reached its voltage or temperature limit before the site display reached the nominal lower SOC. Compare pack and string voltages, SOC, charge completion status, balancing state and the first active limit at both endpoints.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3af85149 auto-h3 elementor-widget elementor-widget-heading\" data-id=\"3af85149\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Auxiliary Loads Were Counted Differently<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f7844d6e auto-p elementor-widget elementor-widget-heading\" data-id=\"f7844d6e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Air conditioning, liquid-cooling pumps, control power, heaters, fire-system loads and transformer no-load losses can sit inside or outside the chosen meter boundary. The capacity result must say whether gross BESS output or net delivered energy is being accepted. Record auxiliary kW throughout the test instead of applying an unverified percentage afterward.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-61d6e0f9 auto-h3 elementor-widget elementor-widget-heading\" data-id=\"61d6e0f9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Test Power Changed the Available Energy<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8c43468a auto-p elementor-widget elementor-widget-heading\" data-id=\"8c43468a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">A capacity test at one power level cannot be assumed to represent every dispatch duty. Higher current can increase conversion and resistive losses, while a very low-power test can extend exposure to standing auxiliaries. Specify a constant-power profile, tolerance band, ramp treatment and how periods outside the band are handled.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2365a8c0 auto-h3 elementor-widget elementor-widget-heading\" data-id=\"2365a8c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Temperature or Thermal Controls Reduced the Window<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25c3eec2 auto-p elementor-widget elementor-widget-heading\" data-id=\"25c3eec2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">The system may derate or tighten charge and discharge limits before a temperature becomes severe enough to trigger a trip. Record ambient temperature, representative cell and coolant or cabinet temperatures, thermal-system status and the BMS\/PCS power limits. A test begun before the system reaches stable conditions is difficult to reproduce or defend.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-787faaf1 auto-h3 elementor-widget elementor-widget-heading\" data-id=\"787faaf1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">5. A String or Power Block Was Partly Unavailable<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1aae94e1 auto-p elementor-widget elementor-widget-heading\" data-id=\"1aae94e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">A disconnected string, contactor state, communication exclusion or maintenance bypass may reduce available energy without shutting down the entire plant. The acceptance record should reconcile the installed configuration with the online configuration at the start, during the limiting event and at the end of discharge.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bef15759 auto-h3 elementor-widget elementor-widget-heading\" data-id=\"bef15759\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">6. Metering or Time Alignment Was Wrong<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-299cdee3 auto-p elementor-widget elementor-widget-heading\" data-id=\"299cdee3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">A sign reversal, kW-versus-W scaling error, mismatched CT ratio, data gap or clock offset can turn a valid discharge into an apparent failure. Compare the revenue meter with PCS and EMS trends at a common timestamp. The <strong><a href=\"https:\/\/www.solidess.com\/fr\/guide-dessai-de-reception-en-usine-de-bess\/\" target=\"_blank\" style=\"color:#61ce70\">BESS factory acceptance test witness guide<\/a><\/strong> helps move scaling, sign and data-chain checks ahead of site testing.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-072dcff3 auto-h3 elementor-widget elementor-widget-heading\" data-id=\"072dcff3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">7. Preconditioning and Test Sequence Were Incomplete<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ce1684c auto-p elementor-widget elementor-widget-heading\" data-id=\"2ce1684c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">The approved procedure should define charging method, completion criterion, balancing opportunity, rest period, thermal stabilization and preceding duty. If the system arrives at the test after an uncontrolled dispatch or incomplete charge, the result is not directly comparable with the contracted reference condition.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f1a58ff9 auto-image elementor-widget elementor-widget-image\" data-id=\"f1a58ff9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Shortfall-Diagnostic-Matrix.png\" class=\"attachment-1536x1536 size-1536x1536 wp-image-4515\" alt=\"BESS capacity shortfall diagnostic matrix linking symptoms to meter BMS PCS and auxiliary evidence\" srcset=\"https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Shortfall-Diagnostic-Matrix.png 1000w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Shortfall-Diagnostic-Matrix-300x225.png 300w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Shortfall-Diagnostic-Matrix-768x576.png 768w, https:\/\/www.solidess.com\/wp-content\/uploads\/2026\/08\/BESS-Capacity-Shortfall-Diagnostic-Matrix-600x450.png 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0da5860e auto-h2 elementor-widget elementor-widget-heading\" data-id=\"0da5860e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Use Evidence to Separate Test Error From System Limitation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-61ceb9d5 auto-p elementor-widget elementor-widget-heading\" data-id=\"61ceb9d5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Do not begin by changing SOC limits, resetting alarms or replacing modules. Preserve the original files and identify the first event that changed power, availability or the energy window. The minimum dataset is requested and measured AC power, the contractual meter, BESS SOC, battery voltage and current, string availability, BMS charge\/discharge limits, PCS limits, representative temperatures, auxiliary power and synchronized event logs.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-544a133c auto-table elementor-widget elementor-widget-text-editor\" data-id=\"544a133c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"cea-table-wrap\"><table><thead><tr><th>Observed pattern<\/th><th>Evidence to check first<\/th><th>Likely decision<\/th><\/tr><\/thead><tbody><tr><td>Stable power, early discharge stop<\/td><td>First string voltage limit, SOC endpoint, unavailable strings<\/td><td>Confirm usable window and string condition before retest<\/td><\/tr><tr><td>Gross PCS energy passes; PCC energy fails<\/td><td>Transformer loss, auxiliary meter and concurrent site load<\/td><td>Resolve measurement boundary and net-delivery clause<\/td><\/tr><tr><td>Power gradually derates<\/td><td>Cell temperature spread, coolant or airflow status, BMS\/PCS limits<\/td><td>Correct thermal condition and repeat under approved environment<\/td><\/tr><tr><td>Meter total disagrees with EMS trend<\/td><td>CT ratio, sign, time zone, sampling gaps and meter calibration<\/td><td>Validate instrumentation before declaring battery failure<\/td><\/tr><tr><td>Repeated tests vary after different prior duties<\/td><td>Preconditioning, rest time, charge completion and balancing state<\/td><td>Standardize the sequence and establish a reproducible baseline<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-42e01286 auto-p elementor-widget elementor-widget-heading\" data-id=\"42e01286\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Performance-test data should identify power exchanged with the grid, requested power and SOC; additional AC\/DC metering, auxiliary consumption and temperature data improve root-cause resolution. These evidence categories are also reflected in the <strong><a href=\"https:\/\/www.cooperative.com\/programs-services\/bts\/access\/Documents\/NRECA-Advisory-BESS-Test-Performance-Guide-March-2022.pdf\" target=\"_blank\" style=\"color:#61CE70\" rel=\"noopener\">NRECA BESS performance-test guide<\/a><\/strong>.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c61459e1 auto-h2 elementor-widget elementor-widget-heading\" data-id=\"c61459e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Write the Capacity Test Into the RFQ Before Award<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5663d6d2 auto-p elementor-widget elementor-widget-heading\" data-id=\"5663d6d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">A procurement team has more leverage before the purchase order than after a disputed SAT. Attach a capacity-test schedule to the RFQ and require each bidder to mark inclusions, deviations and assumptions. The <strong><a href=\"https:\/\/www.solidess.com\/fr\/ci-bess-procurement-checklist-2026\/\" target=\"_blank\" style=\"color:#61ce70\">C&amp;I BESS procurement checklist<\/a><\/strong> can be used for the wider commercial review, while the test schedule owns this specific acceptance boundary.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36de0098 elementor-widget-mobile__width-inherit auto-list elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"36de0098\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83d\udccd <strong>Measurement point:<\/strong> Meter name, SLD location, accuracy class, CT\/PT ratio, calibration and sign convention.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83d\udd0b <strong>Energy basis:<\/strong> Nominal DC, usable DC, gross AC or net AC delivered energy; beginning-of-life or another stated condition.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u2b06\ufe0f <strong>Start condition:<\/strong> Charge completion, upper SOC or voltage criteria, balancing, stabilization and allowable rest time.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u2b07\ufe0f <strong>Stop condition:<\/strong> Lower SOC or voltage criteria, first limiting event, safety boundary and treatment of manual interruption.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u2699\ufe0f <strong>Power profile:<\/strong> Commanded kW, tolerance, ramps, pauses, reactive-power state and excluded intervals.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83c\udf21\ufe0f <strong>Environment:<\/strong> Ambient and battery temperature range, altitude, HVAC state and approved derating rules.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83c\udf00 <strong>Auxiliaries:<\/strong> Included loads, separate meter, gross\/net calculation and standby treatment.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\ud83d\udcca <strong>Data package:<\/strong> Raw meter file, BMS\/PCS\/EMS trends, event log, sampling rate, timestamps and report template.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u2705 <strong>Acceptance rule:<\/strong> Target, tolerance, correction method, retest rights, responsible party and shortfall remedy.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ba06b18e auto-h2 elementor-widget elementor-widget-heading\" data-id=\"ba06b18e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Apply the Test Boundary to MegSolid C&amp;I BESS Models<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28c4cd14 auto-p elementor-widget elementor-widget-heading\" data-id=\"28c4cd14\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">MegSolid product ratings provide the equipment starting point; they do not replace a project-specific usable-energy guarantee. The ordered quotation, signed datasheet, BOM, SLD, control narrative, warranty and acceptance plan must agree on the exact configuration and test conditions.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7eae8be6 auto-table elementor-widget elementor-widget-text-editor\" data-id=\"7eae8be6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"cea-table-wrap\"><table><thead><tr><th>MegSolid reference<\/th><th>Verified published data<\/th><th>Capacity-test RFQ action<\/th><\/tr><\/thead><tbody><tr><td>ESSA0100B-0215 outdoor cabinet<\/td><td>100 kW rated AC power; 215.04 kWh nominal capacity; 0.5C at 25\u00b0C; LFP cell type<\/td><td>Do not promise 215.04 kWh at the PCC; define usable SOC window, auxiliaries, test power and AC meter boundary<\/td><\/tr><tr><td>261.24 kWh liquid-cooled system<\/td><td>261.24 kWh rated energy; 125 kVA rated AC power; hybrid solid-state LFP-314Ah; maximum system efficiency 90%<\/td><td>Do not relabel maximum system efficiency as guaranteed RTE; request the project acceptance value and conditions<\/td><\/tr><tr><td>ESSA0050B-0100 outdoor cabinet<\/td><td>50 kW rated AC power; 100.352 kWh nominal capacity; 0.5C at 25\u00b0C; LFP cell type<\/td><td>Use the same measurement and auxiliary boundary when comparing the nominal two-hour class with the required site delivery<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b075abc auto-p elementor-widget elementor-widget-heading\" data-id=\"5b075abc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">For the outdoor platform, review the <strong><a href=\"https:\/\/www.solidess.com\/fr\/product\/systeme-de-stockage-denergie-en-armoire-exterieure\/\" target=\"_blank\" style=\"color:#61ce70\">MegSolid ESSA cabinet specifications<\/a><\/strong> together with the <strong><a href=\"https:\/\/www.solidess.com\/fr\/comment-selectionner-un-systeme-de-stockage-denergie-par-batterie-bess-exterieur-de-100-kw-215-kwh-pour-un-site-commercial-et-industriel-ci\/\" target=\"_blank\" style=\"color:#61ce70\">100 kW \/ 215 kWh BESS selection guide<\/a><\/strong>. For a liquid-cooled alternative, the <strong><a href=\"https:\/\/www.solidess.com\/fr\/guide-des-rfq-pour-le-systeme-de-stockage-denergie-refroidi-par-liquide-de-261-kwh\/\" target=\"_blank\" style=\"color:#61ce70\">261.24 kWh liquid-cooled BESS RFQ guide<\/a><\/strong> keeps system efficiency, power and acceptance assumptions separate.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64064676 auto-p elementor-widget elementor-widget-heading\" data-id=\"64064676\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Where the project requires a verified hybrid solid-state configuration, MegSolid can review the required cell and system evidence. Hybrid solid-state architecture can reduce flammable-liquid exposure and improve resistance to some internal-fault propagation mechanisms when supported by the ordered configuration's test evidence. It does not make the BESS fireproof or remove the need for BMS limits, thermal controls, detection, suppression and emergency procedures. Review the <strong><a href=\"https:\/\/www.solidess.com\/fr\/systemes-de-stockage-denergie-a-letat-solide\/\" target=\"_blank\" style=\"color:#61ce70\">MegSolid solid-state energy storage systems<\/a><\/strong> and the <strong><a href=\"https:\/\/www.solidess.com\/fr\/emportement-thermique-dune-batterie-a-semi-conducteurs-12-points-a-verifier-avant-de-valider-un-bess\/\" target=\"_blank\" style=\"color:#61ce70\">12 thermal-runaway verification checks<\/a><\/strong> without transferring solid-state claims to standard LFP models.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65a7ed6e auto-h2 elementor-widget elementor-widget-heading\" data-id=\"65a7ed6e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Send the Right Evidence for a Defensible Retest<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ba4d426 auto-p elementor-widget elementor-widget-heading\" data-id=\"4ba4d426\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Send MegSolid the signed capacity clause, SLD, meter location, ordered model and BOM, commissioning plan, raw meter export, BMS\/PCS\/EMS trends, alarm and event logs, auxiliary-power data, ambient and battery temperatures, start and stop conditions, commanded kW, observed shortfall and previous retest history. This lets the engineering review separate a contractual mismatch, instrumentation problem, site condition and equipment limitation before recommending corrective work.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b387a5ed elementor-tablet-align-center elementor-align-center auto-cta elementor-widget elementor-widget-button\" data-id=\"b387a5ed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6Ijk0OCIsInRvZ2dsZSI6ZmFsc2V9\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Send Test Data to MegSolid<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe2f00e7 auto-p elementor-widget elementor-widget-heading\" data-id=\"fe2f00e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">This article provides a baseline diagnostic and procurement framework. To receive the editable BESS Capacity Test Acceptance Workbook\u2014including the measurement-boundary schedule, energy-integration fields, synchronized data checklist, retest record and RFQ responsibility matrix\u2014email <strong>sfhq2008@gmail.com<\/strong>. Include the project country, BESS power and energy, selected model, contractual meter point and expected delivery date.<\/p>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d2d015fa auto-faq e-flex e-con-boxed e-con e-child\" data-id=\"d2d015fa\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-10e57346 elementor-widget elementor-widget-heading\" data-id=\"10e57346\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f03a4f50 e-con-full e-flex e-con e-child\" data-id=\"f03a4f50\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d2e182f6 elementor-widget elementor-widget-n-accordion\" data-id=\"d2e182f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accord\u00e9on. Ouvrez les liens \u00e0 l&#039;aide de la touche Entr\u00e9e ou de la barre d&#039;espace, fermez-les avec la touche \u00c9chap et naviguez \u00e0 l&#039;aide des touches fl\u00e9ch\u00e9es.\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3530\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3530\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What should a BESS capacity test contract define? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3530\" class=\"elementor-element elementor-element-a8bcb8b2 e-con-full e-flex e-con e-child\" data-id=\"a8bcb8b2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3530\" class=\"elementor-element elementor-element-6f1fcd74 e-con-full e-flex e-con e-child\" data-id=\"6f1fcd74\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-958c26b9 elementor-widget elementor-widget-heading\" data-id=\"958c26b9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Define the energy basis, meter and SLD location, start and stop conditions, constant-power profile, temperature range, auxiliary treatment, data files, pass tolerance, correction method, retest rights and commercial remedy.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3531\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3531\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Can a BESS fail its capacity test with no active alarm? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3531\" class=\"elementor-element elementor-element-1f843441 e-con-full e-flex e-con e-child\" data-id=\"1f843441\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3531\" class=\"elementor-element elementor-element-0219d8b3 e-con-full e-flex e-con e-child\" data-id=\"0219d8b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-228368e2 elementor-widget elementor-widget-heading\" data-id=\"228368e2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Yes. SOC endpoints, net auxiliary consumption, meter location, derating, unavailable strings, calibration or incomplete preconditioning can reduce measured energy without crossing a configured fault threshold.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3532\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3532\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Should capacity be measured on the DC or AC side? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3532\" class=\"elementor-element elementor-element-7af34d79 e-con-full e-flex e-con e-child\" data-id=\"7af34d79\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3532\" class=\"elementor-element elementor-element-1d96ffe4 e-con-full e-flex e-con e-child\" data-id=\"1d96ffe4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-912b6f39 elementor-widget elementor-widget-heading\" data-id=\"912b6f39\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Use the boundary named in the contract. A site delivery guarantee normally needs an identified AC meter, while diagnostic testing may also use DC battery and PCS measurements to separate losses and limitations.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3533\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3533\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Should BESS auxiliary power be deducted from delivered energy? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3533\" class=\"elementor-element elementor-element-af9a2bd9 e-con-full e-flex e-con e-child\" data-id=\"af9a2bd9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3533\" class=\"elementor-element elementor-element-1dd983ac e-con-full e-flex e-con e-child\" data-id=\"1dd983ac\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-40d92cfd elementor-widget elementor-widget-heading\" data-id=\"40d92cfd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Only according to the approved gross or net boundary. State which cooling, control, fire-system, heater, pump and transformer loads are inside the calculation and meter them during the test where practical.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3534\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3534\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Is displayed SOC enough to prove the capacity-test endpoints? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3534\" class=\"elementor-element elementor-element-957fcc64 e-con-full e-flex e-con e-child\" data-id=\"957fcc64\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3534\" class=\"elementor-element elementor-element-a5dc833e e-con-full e-flex e-con e-child\" data-id=\"a5dc833e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-922c016e elementor-widget elementor-widget-heading\" data-id=\"922c016e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">No. Record SOC together with pack and string voltage, current, charge-completion state, first limiting condition, balancing status and active BMS or PCS limits at both endpoints.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3535\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"6\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3535\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What data should be preserved after a failed capacity test? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3535\" class=\"elementor-element elementor-element-c85db0c5 e-con-full e-flex e-con e-child\" data-id=\"c85db0c5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3535\" class=\"elementor-element elementor-element-03772c61 e-con-full e-flex e-con e-child\" data-id=\"03772c61\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-237b4c5c elementor-widget elementor-widget-heading\" data-id=\"237b4c5c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Preserve the raw contractual-meter export, requested and measured power, BMS and PCS limits, SOC, battery voltage and current, string availability, temperatures, auxiliary power, alarms, events and synchronized timestamps.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3536\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"7\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3536\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> When should an EPC repeat a BESS capacity test? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3536\" class=\"elementor-element elementor-element-d6d27e26 e-con-full e-flex e-con e-child\" data-id=\"d6d27e26\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3536\" class=\"elementor-element elementor-element-8e06363d e-con-full e-flex e-con e-child\" data-id=\"8e06363d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-126301d0 elementor-widget elementor-widget-heading\" data-id=\"126301d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Repeat it after the cause of the invalid or failed result is documented, corrective action is complete, instrumentation is verified and the approved preconditioning and environmental requirements can be reproduced.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3537\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"8\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3537\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Does nominal kWh equal usable AC energy? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3537\" class=\"elementor-element elementor-element-d978133b e-con-full e-flex e-con e-child\" data-id=\"d978133b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3537\" class=\"elementor-element elementor-element-0ad05aa4 e-con-full e-flex e-con e-child\" data-id=\"0ad05aa4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3814d4c7 elementor-widget elementor-widget-heading\" data-id=\"3814d4c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">No. Nominal battery energy does not automatically include the approved SOC window, conversion and transformer effects, auxiliaries, reserve, temperature conditions, availability or end-of-life requirement.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3538\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"9\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3538\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Does the ESSA0100B-0215 guarantee 215.04 kWh at the PCC? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3538\" class=\"elementor-element elementor-element-69bc41fd e-con-full e-flex e-con e-child\" data-id=\"69bc41fd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3538\" class=\"elementor-element elementor-element-fff99bb3 e-con-full e-flex e-con e-child\" data-id=\"fff99bb3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-14166a50 elementor-widget elementor-widget-heading\" data-id=\"14166a50\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">No. The published 215.04 kWh value is nominal capacity. Any guaranteed PCC delivery must be stated separately with the meter boundary, SOC window, test power, auxiliary treatment, conditions and tolerance.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-3539\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"10\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-3539\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What should a buyer send MegSolid for a capacity-shortfall review? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3539\" class=\"elementor-element elementor-element-3a2b1d54 e-con-full e-flex e-con e-child\" data-id=\"3a2b1d54\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-3539\" class=\"elementor-element elementor-element-d2174c79 e-con-full e-flex e-con e-child\" data-id=\"d2174c79\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d0ce8a94 elementor-widget elementor-widget-heading\" data-id=\"d0ce8a94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Send the signed test clause, SLD, ordered model and BOM, meter details, raw trends, auxiliary data, temperatures, start and stop records, commanded power, observed energy and retest history.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-35310\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"11\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-35310\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is a BESS capacity test failure? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-35310\" class=\"elementor-element elementor-element-1ee043c9 e-con-full e-flex e-con e-child\" data-id=\"1ee043c9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-35310\" class=\"elementor-element elementor-element-c20ec83e e-con-full e-flex e-con e-child\" data-id=\"c20ec83e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cd323b89 elementor-widget elementor-widget-heading\" data-id=\"cd323b89\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">A BESS capacity test failure occurs when the measured energy under the approved procedure and boundary does not meet the contractual target or tolerance, even if the system remains operational and shows no fault alarm.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-35311\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"12\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-35311\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Why can usable BESS energy be lower than nameplate capacity? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-35311\" class=\"elementor-element elementor-element-026f2cd3 e-con-full e-flex e-con e-child\" data-id=\"026f2cd3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-35311\" class=\"elementor-element elementor-element-c1315a46 e-con-full e-flex e-con e-child\" data-id=\"c1315a46\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4740853f elementor-widget elementor-widget-heading\" data-id=\"4740853f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Usable energy may be lower because nameplate capacity is reduced by the approved SOC window, conversion and transformer effects, auxiliary consumption, reserve requirements, temperature limits, unavailable equipment and the chosen meter boundary.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-35312\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"13\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-35312\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> How does MegSolid investigate a BESS capacity shortfall? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-35312\" class=\"elementor-element elementor-element-195c7bb6 e-con-full e-flex e-con e-child\" data-id=\"195c7bb6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-35312\" class=\"elementor-element elementor-element-3e87db52 e-con-full e-flex e-con e-child\" data-id=\"3e87db52\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-de408edd elementor-widget elementor-widget-heading\" data-id=\"de408edd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">MegSolid reconciles the contract and SLD with synchronized meter, BMS, PCS, EMS, temperature, auxiliary and availability data, identifies the first limiting event, and defines the evidence needed for corrective action or a controlled retest.<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Diagnose a BESS capacity test failure by separating SOC endpoints, auxiliary loads, temperature, power level, unavailable strings and meter boundaries before accepting or rejecting the system.<\/p>","protected":false},"author":4,"featured_media":4513,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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