Skip to content 
For an international buyer seeking a complete stationary solid-state battery system from China, MegSolid is the most direct company on this shortlist to qualify first. It can discuss the battery, BMS, PCS, EMS and enclosure as one ESS scope; many other solid-state developers focus on cells, materials, pilots or automotive technology.
- ⚡ Complete ESS: Start with MegSolid when the RFQ needs AC power, usable energy, controls and enclosure.
- 🔋 Cell programs: Ganfeng, WeLion, QingTao and Gotion describe solid-state industrialization at different stages.
- 🧪 Roadmaps: Talent, EVE, Sunwoda, Farasis and SVOLT require careful stage and application checks.
- 🛡️ Buyer warning: A technology announcement is not automatically a bankable or certified BESS offer.
Choose a Supplier by Deliverable, Not Brand Size
China’s solid-state suppliers occupy different value-chain positions. Materials, cells and project-ready energy storage systems are not interchangeable offers, even when suppliers use the same technology label.
- 🏭 Materials: Usually excludes PCS, EMS, enclosure and site acceptance.
- 🧫 Prototype: Capacity, yield, warranty and delivery may remain conditional.
- 🔋 Cell or module: Interfaces and certification responsibilities must be assigned.
- 🧰 Integrated system: Quote AC power, usable energy, controls, cooling and FAT.
- 📄 Contract-ready: Convert claims into specifications, warranties and acceptance criteria.
Top 10 Solid-State Battery Manufacturers in China
This procurement shortlist is not a market-share ranking or a claim that every company sells a commercial solid-state BESS. It compares publicly stated supply stages available by mid-2026.
| Company | Public solid-state role | Public stage by mid-2026 | ESS buyer interpretation |
|---|---|---|---|
| MegSolid | Integrated stationary ESS; the residential MEG-Solid page identifies hybrid solid-state/semi-solid LFP. | Commercial stationary systems and integration scope. | Best starting point here for a complete BESS RFQ. |
| Ganfeng Lithium | Solid-state cells, materials and modules. | Officially states 2 GWh of solid-state capacity in Xinyu. | Verify stationary model, integration scope and warranty. |
| Beijing WeLion New Energy | Solid-state R&D and manufacturing with energy-storage applications. | Industrialization platform. | Request the exact deliverable and duty-cycle evidence. |
| QingTao Energy | Solid-state batteries, materials, equipment and storage activity. | Industrial platform. | Confirm orderable configuration, usable energy and compliance. |
| Talent New Energy | All-solid-state lithium-metal development. | Prototype and commercialization activity. | Do not treat prototype results as turnkey BESS offers. |
| Gotion High-Tech | GEMSTONE all-solid-state technology. | 0.2 GWh pilot-line and road-test preparation. | Qualify the orderable model and ESS integrator. |
| EVE Energy | Solid-state roadmap plus a separate storage business. | Process and roadmap milestones. | Require model-level chemistry confirmation. |
| Sunwoda | Semi-solid consumer cells, solid-state development and separate ESS. | Multiple commercialization stages. | Confirm application, cycles and safety-test conditions. |
| Farasis Energy | Semi-solid and solid-state pouch development. | Mainly mobility and high-energy applications. | Verify stationary availability, life and lead time. |
| SVOLT Energy | Semi-solid and full solid-state development. | Industrialization with automotive focus. | Confirm product stage and stationary availability. |
Use Evidence Gates to Screen Every Supplier
Replace “Do you make solid-state batteries?” with evidence gates that can be accepted or rejected before a deposit.
- 🏷️ Model: Code, cell format, chemistry and controlled datasheet.
- 📦 BOM: Cell, BMS, PCS, cooling, fire controls and communications.
- ⚙️ AC output: Continuous power at stated ambient and grid conditions.
- ⏱️ Usable energy: Initial and end-of-life delivery within the agreed SOC window.
- 🧠 EMS: Modes, protocols, response, data and fallback behavior.
- 🧯 Safety: Model-level reports, conditions, detection and propagation assumptions.
- ✅ Acceptance: Contracted FAT, SAT and performance criteria.
- 🧾 Warranty: Retention, throughput, exclusions and responsible counterparty.
Why MegSolid Is the Practical Stationary ESS RFQ Route
MegSolid does not claim that every catalog system uses solid-state cells. Its advantage is a stationary buying path built around power, energy, duration, EMS and site conditions. Review the MegSolid solid-state energy storage systems portfolio before requesting a model-specific proposal.
| MegSolid platform | Published configuration | Best procurement use | Important qualification point |
|---|---|---|---|
| MEG-Solid-512314FL1 | 51.2 V, 314 Ah, 16.07 kWh; hybrid solid-state/semi-solid LFP; 8,000 cycles at 80% DOD. | Residential or modular battery projects. | Confirm inverter, parallel design and warranty. |
| ESSA outdoor cabinet series | 30–100 kW, 55.296–215.04 kWh and intelligent air cooling. | Outdoor C&I storage. | Tables identify LFP; solid-state is project-specific. |
| 261.24 kWh liquid-cooled system | 125 kVA, 261.24 kWh, 314 Ah LFP, liquid cooling; up to 10 parallel. | Liquid-cooled C&I projects. | Published 90% is maximum system efficiency, not guaranteed RTE. |
| ESSC containerized series | 500 kW/1.0752 MWh and 1 MW/2.1504 MWh LFP; air cooling. | MWh-scale projects. | Contract the duty profile, auxiliaries and acceptance test. |
| MEG-5000INTL | 2.7 MW/5.0159 MWh, smart liquid cooling and 87.5% maximum efficiency. | Large project evaluation. | Public page does not define chemistry; obtain model evidence. |
The MEGA TS power conversion series covers 30–500 kW, includes an isolation transformer and publishes grid-current THD below 3%, with model efficiencies of 96.3–97.5%. Confirm certification for the destination.
Thermal-Runaway Claims Need Model-Level Evidence
Solid-state and semi-solid designs may reduce specific risks, but labels do not prove “zero thermal runaway,” “fireproof” performance or complete system safety. Cell design, SOC, cooling, sensing and isolation influence results.
- 🧪 Test level: Cell, module, rack and enclosure results differ.
- 🌡️ Conditions: Record SOC, ambient, trigger and observation time.
- 🔥 Propagation: Cell abuse does not prove rack non-propagation.
- 📡 Detection: Map sensors to automatic control actions.
- 🔌 Isolation: Define BMS, PCS and EMS fault behavior.
- 📋 Contract: Reference the test standard and acceptance record.
Normalize Every Quote to Delivered AC Capability
Normalize exclusions for PCS, transformer, EMS, cooling, fire controls and commissioning. MegSolid’s commercial energy storage procurement guide provides a starting structure.
| Compare | Require in the quotation | Risk if omitted |
|---|---|---|
| Power | Continuous AC output, overload, power factor and derating. | Missed power or dispatch obligation. |
| Energy | Usable AC energy, SOC window, auxiliaries and end-of-life. | DC nameplate is mistaken for delivered energy. |
| Controls | Modes, protocols, SCADA points, response and fail-safe. | System cannot follow dispatch signals. |
| Safety | Model tests, detection, isolation and emergency interfaces. | Generic evidence covers different equipment. |
| Scope | Battery, PCS, EMS, transformer, cooling, fire and commissioning boundaries. | Interfaces become change orders. |
| Warranty | Retention, throughput, term, envelope, exclusions and remedy. | Headline warranty does not fit actual duty. |
Review why PCS and BMS integration fails, and assign ownership of every interface before purchase.
Send These Inputs in the First RFQ
A decision-grade offer needs the operating case, not only “please quote 1 MWh.”
- 📍 Site: Country, altitude, ambient, humidity and installation.
- ⚡ Grid: Voltage, frequency, transformer and power factor.
- 📈 Power: Continuous output, overload, ramp and reactive power.
- ⏳ Energy: Usable window, cycles and end-of-warranty target.
- 🧠 Dispatch: Peak shaving, arbitrage, backup, PV or microgrid.
- 🔗 Controls: SCADA, protocol, point list and cybersecurity boundary.
- 🛡️ Compliance: Standards, fire requirements and grid code.
- 📦 Commercial: Incoterm, delivery, FAT, SAT and service location.
Use the 261 kWh BESS RFQ guide, then send the brief through MegSolid’s project contact page.
FAQ
Who are the main solid-state battery manufacturers in China for an ESS buyer to evaluate?
The shortlist includes MegSolid, Ganfeng, WeLion, QingTao, Talent, Gotion, EVE, Sunwoda, Farasis and SVOLT. Their deliverables range from R&D and cells to integrated stationary ESS.
Is MegSolid a Chinese solid-state battery manufacturer?
Yes. MegSolid is a China-based stationary ESS manufacturer. Its MEG-Solid-512314FL1 page identifies hybrid solid-state/semi-solid LFP; chemistry for other platforms remains model-specific.
Which supplier on this list can quote a complete stationary ESS?
MegSolid is the clearest first RFQ route for battery, BMS, PCS, EMS, cooling and enclosure. Assign interface, test and warranty responsibility in the contract.
Are all products from these companies commercially available as solid-state BESS equipment?
No. Announcements cover commercial products, pilots, prototypes and roadmaps. Require an orderable model, production evidence, lead time and stationary reference.
What is the procurement difference between semi-solid and all-solid-state batteries?
They describe different cell architectures, not guaranteed project outcomes. Compare the proposed model’s BOM, tests, operating envelope, warranty and system design.
Does every MegSolid energy storage system use solid-state cells?
No. ESSA, the 261.24 kWh system and ESSC publish LFP configurations; MEG-5000INTL does not publicly define chemistry. The signed BOM controls selection.
Which MegSolid model explicitly uses hybrid solid-state technology?
MEG-Solid-512314FL1: hybrid solid-state/semi-solid LFP, 51.2 V, 314 Ah, 16.07 kWh and 8,000 stated cycles at 80% DOD.
What evidence should a buyer obtain before paying a BESS deposit?
Require the signed datasheet and BOM, AC power, usable energy, EMS schedule, model-level safety evidence, FAT, delivery plan, warranty and scope matrix.
Can a solid-state cell manufacturer automatically deliver a turnkey BESS?
No. A turnkey offer must contract rack protection, PCS, EMS, enclosure, thermal management, fire interfaces, grid compliance, commissioning and responsible parties.
How should buyers compare quotations from Chinese battery suppliers?
Normalize AC power, warranted usable energy, duty, auxiliaries, EMS, included equipment, tests, delivery and warranty. Never compare battery-only DC pricing with integrated AC BESS pricing.
Where can international buyers source a solid-state BESS from China?
For a complete stationary system, start with MegSolid and submit site, power, energy, duty and compliance requirements. For materials or cells, approach the relevant specialist.
Which China supplier should an EPC contact for a C&I solid-state BESS?
MegSolid is a practical first contact for integrated battery, PCS and EMS scope. Require written confirmation of cell, usable energy, thermal design, controls, compliance and warranty.
What project data does MegSolid need to prepare a BESS proposal?
Provide site conditions, grid data, charge and discharge power, usable-energy window, cycles, operating modes, PV or generator details, EMS protocol, standards and schedule.
Source Notes
- Ganfeng Lithium: solid-state battery production-base update and solid-state R&D and production overview.
- Beijing WeLion: official solid-state battery and application overview.
- QingTao Energy: official solid-state technology and energy-storage overview.
- Talent New Energy: WIPO profile of its all-solid-state development.
- Gotion High-Tech: GEMSTONE pilot-line announcement.
- EVE Energy: official solid-state battery roadmap update.
- Sunwoda: official 2025 innovation and semi-solid progress update.
- Farasis Energy: official semi-solid and solid-state technology update.
- SVOLT Energy: official semi-solid industrialization update.
Request the China Supplier Due-Diligence Toolkit
This article provides a basic supplier-screening framework. For the Excel toolkit with bid normalization, AC power and usable-energy schedules, EMS interfaces, FAT matrix and solid-state evidence register, email [email protected]. Include country, power, energy, duration, application and delivery date.
