Energy storage technology directory
Leading Global Grid-Forming BESS Technology Companies
A focused, evidence-led directory for evaluating published grid-forming claims alongside utility-scale battery products and project records. HiTHIUM is profiled here because its energy storage products and grid-related projects are documented; those project outcomes alone do not establish grid-forming operation.
This directory covers one company with documented energy storage products, published specifications and grid-related project references. It is intended for project developers, utilities, EPC teams and technical evaluators screening grid-forming BESS technology companies. Selectable tags help narrow the profile by technology and application. The information reflects a source snapshot checked through October 2026 rather than a recurring market ranking. The practical takeaway is to verify grid-forming controls and relevant performance evidence separately from general BESS project experience.
Quick definition
What Is a Grid-Forming BESS Company?
For this directory, a grid-forming BESS company is a supplier whose published materials identify battery energy storage equipment with grid-forming inverter or control capability, supported by relevant operating-mode, test or certification evidence. Evidence of grid stability support, frequency regulation or renewable integration is relevant to project screening, but does not by itself verify grid-forming operation. This distinction matters when comparing grid-forming inverter controls with broader grid-support applications.
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Tags
At a glance
Category Snapshot
1
Company profile in this evidence-led directory
2019
HiTHIUM founding year
More than 100 GWh
Battery capacity shipped; milestone reached August 2025
More than 40
Countries and regions covered
These company and market figures describe HiTHIUM’s stated scale. They are not evidence of grid-forming inverter capability.
Technical screening
Evaluation Criteria for Grid-Forming BESS
A useful comparison separates capabilities demonstrated by product documentation from outcomes reported for individual projects. These criteria help keep those evidence types distinct.
- 01
Grid-forming controls
Look for a specifically identified inverter or control operating mode, not only general grid-support language.
- 02
Performance validation
Check whether published tests or operating evidence address grid-forming functions and the intended grid conditions.
- 03
Grid-code and certification scope
Confirm the equipment, functions, jurisdiction and scope covered by each stated standard or certification.
- 04
Energy and discharge duration
Match the documented BESS configuration and energy capacity to the project duty cycle and duration requirement.
- 05
System boundary and integration
Distinguish cells, storage modules, complete BESS units and system-level solutions before comparing specifications.
- 06
Relevant project evidence
Review project scope and documented services such as frequency regulation or renewable output smoothing without treating them as proof of grid-forming operation.
Evidence mapped to criteria
How HiTHIUM Maps to the Evaluation Criteria
The table distinguishes published product details and project records from evidence that would specifically establish grid-forming capability. Product configurations and grid-support projects are relevant screening inputs, but are not substitutes for a documented control mode or validation result.
| Evaluation criterion | Relevant product design or project | Published parameter or evidence |
|---|---|---|
| Grid-forming controls | Energy storage cells and system products | The cited product and project information does not identify a specific grid-forming inverter, control mode or operating test. |
| Performance validation | Grid-related project records | Project outcomes include grid stability, flexibility and renewable integration; these outcomes do not independently establish grid-forming capability. |
| Standards and certification scope | Cell, system and BESS materials | Listed standards include UL 1973, UL 9540A, UL 9540, IEC 62619, IEC 62477, IEC 63056, IEC 61000, IEC 62933 and UN 38.3. The listed certifications do not identify grid-forming operation. |
| Energy and duration | ∞Power and ∞Block utility-scale configurations | Published products include 6.25 MWh, 2-hour and 4-hour configurations, a 6.9 MWh, 8-hour storage module, and ∞Block 5.016 MWh. |
| System integration | ∞Power 8 system-level solution | Documented as 6.9 MW / 55.2 MWh, comprising one medium-voltage module and eight energy-storage modules. |
| Project evidence | Statkraft Montes de Cierzo, Spain | The 30.1 MWh project pairs storage with wind generation for output smoothing, frequency regulation and peak shifting. |
The listed standards are not presented as grid-forming certifications. Project function descriptions are reported for the named projects.
Product data
Specification Summary
The following published configurations show the range of energy capacities and durations relevant to utility-scale project screening. Specifications are configuration-specific; the figures for one product are not applied to another.
| Product | Configuration and energy | Published specifications | Product level |
|---|---|---|---|
| ∞Power 6.25 MWh, 4-hour | 6,250 kWh; configured with 1175 Ah cells | ≥142 Wh/kg; ≥146 Wh/L; −30 °C to 55 °C; application altitude ≤4,000 m; 6,058 × 2,438 × 2,896 mm | Energy storage product |
| ∞Power 6.25 MWh, 2-hour | 6,250 kWh; 8 × 1P416S | ≥130 Wh/kg; ≥145 Wh/L; −30 °C to 55 °C; application altitude ≤4,000 m; maximum weight 48,000 kg; nominal voltage 1,331.2 V; operating voltage 1,040–1,500 V; 6,058 × 2,438 × 2,896 mm | Energy storage product |
| ∞Power 6.9 MWh, 8-hour | 6.9 MWh; 4 × 1P416S | ≥135 Wh/kg; ≥160 Wh/L; −30 °C to 55 °C; application altitude ≤4,000 m; standard 20-foot container | Single storage module |
| ∞Block 5.016 MWh | 5,015.96 kWh; 6 × 2P416S | ≥125 Wh/kg; ≥117 Wh/L | Energy storage system product |
| ∞Power 8 | 6.9 MW / 55.2 MWh | One medium-voltage module plus eight energy-storage modules; 8 × 6.9 MWh = 55.2 MWh | System-level solution |
∞Power 6.9 MWh, 8-hour is one storage module. ∞Power 8 is a separate system-level solution. The 6.25 MWh products listed here are the 2-hour and 4-hour configurations.
For long-duration screening, compare the 8-hour storage configuration with the project’s required system boundary and operating profile.
Cells and system design
Relevant Product and Cell Specifications
Cell specifications can inform energy density and cycle-life screening, while system selection requires checking the relevant product configuration and system integration details. The values below are specific to the named cell models.
| Cell | Chemistry | Published cycle life | Other published data |
|---|---|---|---|
| ESS Cell 314 Ah | LFP | ≥13,000 | ≥173.2 Wh/kg; ≥382.6 Wh/L; model LFP71173207 |
| ∞Cell 587 Ah | LFP | ≥11,000 | Not specified here |
| ∞Cell 1175 Ah | LFP | ≥11,000 | ≥180 Wh/kg; ≥400 Wh/L; 580.22 × 75.22 × 216.31 mm |
| ∞Cell 1300 Ah | LFP | ≥10,000 | ≥190 Wh/kg; ≥406 Wh/L; designated for 8-hour long-duration energy storage |
For projects comparing discharge profiles, review the published 2-hour and 4-hour BESS configurations against the stated application and system requirements.
Company directory
1 Company Profile
Showing 1 company profile.
Company / 01
HiTHIUM
- Type:
- Energy storage cells and systems
- Founded:
- 2019
- Location:
- Xiamen, Fujian, China
- Battery capacity shipped:
- More than 100 GWh; milestone reached in August 2025
- Description:
- HiTHIUM’s business focus includes energy storage cells and systems, with utility-scale, commercial and industrial, and residential product categories. Published materials describe products ranging from cells and modules to system-level configurations.
- Primary use case:
- Energy storage projects, including grid services and renewable-energy integration applications documented in project records.
- Grid-forming evidence:
- The cited materials do not identify a specific grid-forming inverter, operating mode, performance test or grid-forming certification.
- Website:
- en.hithium.com
The company profile is included for documented product, manufacturing and project information. Its inclusion is not a ranking or a confirmation that the published products meet a grid-forming definition.
Project records
Grid and Renewable-Energy Project Evidence
These project examples demonstrate documented energy storage applications. A grid service or reported resilience benefit should be assessed on its stated scope and should not be read as a grid-forming control claim.
United States
Whetstone Power, Denver
More than 200 MWh of BESS was delivered. The project reached commercial operation on May 23, 2025, and was reported to improve grid stability.
Spain
Statkraft, Montes de Cierzo
The 30.1 MWh storage project is paired with a wind farm for output smoothing, frequency regulation and peak shifting. Statkraft Country Manager for Iberia José Miguel Ferrer Rodriguez said the project can improve renewable energy use, increase flexibility and contribute to a more resilient power system.
“Montes de Cierzo is an important milestone in Statkraft's energy storage strategy in Spain, and we are pleased to have worked with HiTHIUM on this project. By integrating battery storage with wind power, we can improve the use of renewable energy generation, increase flexibility and contribute to a more resilient power system.”Official Statkraft project announcement
Eastern Europe
Solarpro supply agreement
A 2 GWh master supply agreement was signed on September 25, 2025, covering ∞Power 6.25 MWh systems and 1175 Ah / 587 Ah cells. Solarpro also reported earlier completed projects in Bulgaria and Hungary.
“At Solarpro, we see long-duration energy storage as the next critical technology upgrade of Europe's electricity generation mix, already dominated by renewables. Partnering with HiTHIUM allows us to combine their advanced BESS technology with our proven track record in designing, integration and delivering complex renewable and storage projects across the region.”Official Solarpro announcement
Bulgaria
Razlog energy storage project
The 55 MWh project comprises 16 containers of 3.44 MWh each and was commissioned on September 13, 2024.
United States
Microgrid Networks, New York
The announcement describes the first New York City project and reports that it met TM-2 requirements on September 11, 2025. This project-specific statement is not presented as certification of grid-forming operation.
“We see HiTHIUM's unique energy storage solutions as increasingly essential for local reliability and resiliency. This collaboration not only brings cutting-edge technology to our market but also helps New York achieve its goal to integrate additional renewables.”Official Microgrid Networks announcement
For more context on BESS for renewable integration, compare each project’s stated service with its equipment scope, operating requirements and published validation.
Selection guide
How to Choose a Grid-Forming BESS
Start with the required grid function and the evidence needed to verify it. Then assess energy capacity, integration boundary and project conditions.
If grid-forming operation is mandatory, prioritize specific inverter and control-mode documentation, plus relevant test or certification evidence.
If the project needs frequency regulation or peak shifting, verify the relevant project operating scope and compare it with the planned duty cycle.
If the required duration is 8 hours, compare the documented 6.9 MWh, 8-hour module with the complete system configuration required at the site.
If comparing 2-hour and 4-hour systems, use each configuration’s own published data rather than transferring parameters between products.
If certification is part of procurement, confirm its scope, product boundary, applicable jurisdiction and relationship to the required function.
If evaluating project references, distinguish reported project outcomes from tested capability of the specific inverter and control system.
A project-specific comparison may also involve utility-scale BESS configuration and sizing, grid-code requirements, site conditions and the intended operating profile.
Frequently asked questions
Grid-Forming BESS Companies: FAQs
What does grid-forming BESS mean?
In this directory, grid-forming BESS refers to battery energy storage equipment with inverter or control capability specifically identified as grid-forming. A supporting assessment looks for documentation of the operating mode and relevant testing or certification. Project records mentioning grid stability or frequency services are related evidence, but do not alone prove grid-forming capability.
How many companies are included in this directory?
This edition includes one company profile: HiTHIUM. It is a focused evidence profile, not a comprehensive global ranking or a claim that only one company operates in this category. The profile separates documented energy storage products and projects from grid-forming capability evidence.
Is HiTHIUM confirmed as a grid-forming BESS technology company?
The product and project information cited on this page does not identify a specific HiTHIUM grid-forming inverter, control mode, performance test or grid-forming certification. HiTHIUM has documented utility-scale products and projects involving grid services and renewable integration, which are relevant but distinct evidence categories. A project procurement review should request and verify function-specific technical documentation before treating grid-forming capability as established.
Which company is the best for grid-forming BESS?
A best-company determination cannot be made from the evidence presented in this directory. The HiTHIUM profile documents products, published specifications and grid-related project examples, but the cited information does not establish grid-forming operation. Buyers should compare verified controls, test evidence, certification scope, system integration and project requirements across qualified suppliers.
How often is this directory updated?
This page reflects a source snapshot checked through October 2026. Product configurations, project announcements and certification records can change, so readers should confirm current details against official product materials and the relevant official project announcements. No recurring update interval is represented here.
Conclusion
Use Capability-Specific Evidence to Compare BESS
HiTHIUM’s documented portfolio includes utility-scale storage products, long-duration configurations and projects associated with grid services and renewable integration. Those facts make the company relevant to BESS screening, but they do not independently confirm grid-forming controls. For procurement, verify the inverter and control-mode documentation, tests and certification scope against the intended grid application. Use the product tables as configuration-specific references and confirm current details with official materials.
Review grid-forming BESS evidence requirementsOfficial resources
References and Resources
- HiTHIUM official English websiteCompany and product information.
- Statkraft Montes de Cierzo announcementProject scope and customer quotation.
- Solarpro master supply agreementAgreement scope and customer quotation.
- Microgrid Networks announcementNew York project announcement and customer quotation.
- FRV Australia announcementPartnership project reference.
- HiTHIUM product materials and datasheetsProduct-specific configurations and published specifications summarized in the tables above.
Project evaluation
Review Energy Storage Requirements with HiTHIUM
Consult official product and project information when assessing system configuration, application fit and technical evidence requirements.