# BESS Providers

> 54 battery energy storage providers: integrators such as Tesla, Fluence and Sungrow, cell makers such as BYD, CATL and Hithium, and long-duration specialists. A flagship unit now holds 5 to 14.5 MWh, BYD has shipped 135 GWh, and 24 providers sell a data center offer.

Battery storage, read off the spec sheet: MWh per box, GWh in the field, cycles and certs, each with its source. 54 providers, each field linked to its public source, last verified 2026-11-11.
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## Data
- [BESS providers, compared spec by spec](https://bessproviders.com/): the full comparison table
- [Data (JSON)](https://bessproviders.com/data.json): every record with sources
- [Data (CSV)](https://bessproviders.com/data.csv): one row per provider
- [Methodology](https://bessproviders.com/methodology/): what each field means and how it is verified

## Providers
- [ABB](https://bessproviders.com/abb/): ABB offers battery storage as a service to commercial and industrial customers, including data centers. The offer combines hardware, software and lifecycle support under a recurring service fee.
- [Alsym Energy](https://bessproviders.com/alsym-energy/): Alsym makes Na-Series sodium-ion cells for stationary storage, aimed at AI data centers, utilities and commercial real estate, and signed a memorandum of understanding with Re:Build Manufacturing to scale US cell production.
- [BYD Energy Storage](https://bessproviders.com/byd-energy-storage/): BYD makes Blade LFP cells and complete storage systems. It shipped over 60 GWh of storage in 2025, first among all integrators per Benchmark Mineral Intelligence, and its Haohan system packs 14.5 MWh around a 2,710 Ah cell.
- [CALB](https://bessproviders.com/calb/): CALB supplies storage cells, outdoor cabinets and utility containers. Its catalogue includes a high-voltage liquid-cooled container and power-station solutions for data centers.
- [Canadian Solar e-STORAGE](https://bessproviders.com/canadian-solar-e-storage/): Canadian Solar’s e-STORAGE unit builds SolBank 3.0 battery systems on Canadian Solar cells and had shipped over 20 GWh by 31 March 2026. It reported a $3.5 billion contracted backlog in May 2026 and is supplying 2.5 GWh to a US utility serving data center demand.
- [CATL](https://bessproviders.com/catl/): CATL, the world's largest battery maker, sells storage cells and complete systems: the 6.25 MWh TENER container and the 9 MWh TENER Stack. TENER claims zero power and capacity loss in its first five years.
- [Delta Electronics](https://bessproviders.com/delta-electronics/): Delta supplies LFP battery containers and power conversion for grid and industrial storage. Its modular container range includes built-in controls and fire-protection equipment.
- [Eaton](https://bessproviders.com/eaton/): Eaton sells the xStorage BESS for commercial, industrial and data center sites: 250 to 1,000 kWh of usable LFP storage with liquid cooling and Novec 1230 fire protection. It runs alongside Eaton UPS systems rather than replacing them.
- [Energy Dome](https://bessproviders.com/energy-dome/): Energy Dome builds CO2 Batteries that store energy by compressing carbon dioxide and dispatch it for 8 to 24 hours. Google invested in it and takes 100% of a 23 MW / 200 MWh plant in Ireland due in 2028.
- [Energy Vault](https://bessproviders.com/energy-vault/): Energy Vault integrates B-VAULT lithium battery systems and builds power for data centers, including a 2 GW / 20 GWh partnership with RackScale. In August 2026 it signed its largest agreement yet: BESS and grid-forming power conversion for a 1.25 GW off-grid hyperscaler AI data center in Texas.
- [EnerSys](https://bessproviders.com/enersys/): EnerSys manufactures batteries and storage systems for critical power. Its data center portfolio includes TPPL lead-acid UPS batteries and DataSafe Noir lithium-based storage.
- [Envision Energy](https://bessproviders.com/envision-energy/): Envision supplies storage cells, DC containers and AC skid systems. Its storage portfolio covers renewables, industrial energy management and AI infrastructure.
- [Eos Energy Enterprises](https://bessproviders.com/eos-energy/): Eos makes Z3 zinc batteries in Pennsylvania for 4 to 16+ hour storage, sold as Eos Cube and the denser Indensity system. It rates the modules for 25+ years with under 4% degradation.
- [ESS Inc](https://bessproviders.com/ess-inc/): ESS Tech makes iron flow batteries, sold as Energy Base, and in 2026 shifted most of its focus to sodium-ion systems. Its flagship iron flow project is a 5 MW / 50 MWh Energy Base with Salt River Project and Google.
- [EVE Energy](https://bessproviders.com/eve-energy/): EVE Energy makes the 628 Ah Mr. Big storage cell and the Mr. Giant container, now 6.9 MWh in a 20-ft box on 702 Ah cells. It has signed 50+ GWh of strategic agreements for its large-format cells.
- [FlexGen](https://bessproviders.com/flexgen/): FlexGen integrates battery storage around its hardware-agnostic HybridOS controls and bought Powin's IP and spare parts out of Chapter 11 in August 2025. The deal took it to more than 25 GWh of projects in 10 countries.
- [Fluence Energy](https://bessproviders.com/fluence/): Fluence, the Siemens and AES storage company, sells the Smartstack AC-block platform and Fluence OS controls to utilities, developers and data centers. Mercom puts its deployed storage at 17.8 GWh (6.8 GW) for fiscal 2025, with a 9.1 GW contracted backlog.
- [Form Energy](https://bessproviders.com/form-energy/): Form Energy makes 100-hour iron-air batteries in Weirton, West Virginia, for multi-day grid storage. Xcel Energy will deploy 300 MW / 30 GWh of them for a Google data center in Minnesota.
- [GE Vernova](https://bessproviders.com/ge-vernova/): GE Vernova sells FLEX RESERVOIR battery storage built on the RESTORE DC Block, a 5 MWh 20-ft LFP container for 2 to 8 hour plants. It pairs the blocks with its own inverters and controls for utility and IPP projects.
- [Gotion High-Tech](https://bessproviders.com/gotion/): Gotion manufactures storage cells and container systems. Its catalogue includes liquid-cooled LFP storage in the Gotion 5MWh range.
- [Hitachi Energy](https://bessproviders.com/hitachi-energy/): Hitachi Energy integrates battery storage from the grid connection to the cells, including power electronics and plant controls. It offers modular systems for utilities, industry and data centers.
- [Hithium](https://bessproviders.com/hithium/): Hithium manufactures LFP storage cells and utility battery systems. Its current catalogue lists the four-hour ∞Power container, and the company separately markets storage for AI data and computing centers.
- [Huawei Digital Power](https://bessproviders.com/huawei-digital-power/): Huawei supplies utility-scale Smart String ESS containers and power conversion equipment. Its LUNA2000-5015-2S uses liquid-cooled LFP packs.
- [Hydrostor](https://bessproviders.com/hydrostor/): Hydrostor develops advanced compressed air energy storage (A-CAES) in excavated caverns for 8+ hour discharge. Its 500 MW / 4,000 MWh Willow Rock project is certified by the California Energy Commission.
- [HyperStrong](https://bessproviders.com/hyperstrong/): HyperStrong integrates utility-scale battery storage with liquid cooling, controls and string power conversion. HyperBlock III is offered in AC and DC configurations.
- [Invinity Energy Systems](https://bessproviders.com/invinity/): Invinity makes vanadium flow batteries: an ENDURIUM string stores 1.2 MWh usable and discharges over 4 to 18 hours with no cycle limit. Its systems run at close to 100 sites in 17+ countries.
- [Jinko ESS](https://bessproviders.com/jinko-ess/): JinkoSolar's storage business sells the SunTera G2 5 MWh liquid-cooled utility container and the SunGiga C&I cabinet, both on 314 Ah LFP cells. It has 12 GWh a year of storage manufacturing capacity.
- [Kehua Digital Energy](https://bessproviders.com/kehua/): Kehua supplies S³-EStation container storage and S³-EStore commercial cabinets. Its container portfolio integrates battery monitoring, controls and liquid cooling.
- [LG Energy Solution Vertech](https://bessproviders.com/lg-energy-solution-vertech/): LG Energy Solution's US integration arm delivers turnkey LFP storage on LG cells, with 11+ GWh of integrated projects installed, building or in contracting. Its JF2 AC Link made LG the first battery company in NVIDIA's DSX Ready program for AI factories.
- [Lyten](https://bessproviders.com/lyten/): Lyten sells the Voltpack Mobile System for commercial backup, microgrids and mobile power: 290 to 1,450 kWh per hub with up to five Voltpacks.
- [Narada Power](https://bessproviders.com/narada/): Narada makes storage cells and liquid-cooled container systems. Center L Plus serves power generation, grid and user-side storage projects.
- [NHOA Energy](https://bessproviders.com/nhoa-energy/): NHOA Energy designs, delivers and services utility-scale energy storage. It commissioned the Blyth Battery for Neoen with Elecnor Australia.
- [Peak Energy](https://bessproviders.com/peak-energy/): Peak Energy makes passively cooled sodium-ion (NFPP) grid storage systems in the US. Jupiter Power ordered about 720 MWh for 2027 with an option on 4 GWh more through 2030.
- [Prevalon Energy](https://bessproviders.com/prevalon-energy/): Prevalon, spun out of Mitsubishi Power Americas, integrates the 5 MWh HD5 platform for utilities and AI data centers, with 6+ GWh deployed across 35+ projects. Nextpower agreed in May 2026 to buy it for up to $365 million.
- [Pylontech](https://bessproviders.com/pylontech/): Pylontech supplies battery modules, racks and complete storage systems. Its PowerCube-M1C is a high-voltage modular rack, and its project references include mine backup power.
- [REPT BATTERO](https://bessproviders.com/rept-battero/): REPT BATTERO makes cells and complete storage systems. Its Powtrix 2.0 is a liquid-cooled LFP DC container for grid storage.
- [Rolls-Royce mtu](https://bessproviders.com/rolls-royce-mtu/): Rolls-Royce supplies mtu EnergyPack storage and controls for utilities and infrastructure projects. The QG system combines modular LFP battery racks with power conversion.
- [Rongke Power](https://bessproviders.com/rongke-power/): Rongke Power builds vanadium flow batteries in Dalian and has connected more than 3.5 GWh in China. It completed the 175 MW / 700 MWh Xinhua Ushi project in December 2024 and a 200 MW / 1,000 MWh plant at Jimusaer.
- [Saft](https://bessproviders.com/saft/): Saft, owned by TotalEnergies, makes lithium-ion storage containers and has an installed base above 7.5 GWh across grid, renewables and data centers. It replaced diesel backup gensets with Intensium Max batteries at a Microsoft data center in Sweden.
- [Samsung SDI](https://bessproviders.com/samsung-sdi/): Samsung SDI sells the SBB storage container, 6.14 MWh with NCA cells in SBB 1.7 and LFP in SBB 2.0, built in Indiana from 2026. Its UL 9540A-tested lithium cabinets ship inside Vertiv data center UPS systems.
- [Schneider Electric](https://bessproviders.com/schneider-electric/): Schneider Electric sells all-in-one LFP battery systems for microgrids in 7-ft and 20-ft enclosures up to 1,720 kWh, rated for 6,000+ cycles. It pairs them with EcoStruxure Microgrid controls and Galaxy UPS for data centers.
- [Sigenergy](https://bessproviders.com/sigenergy/): Sigenergy supplies modular SigenStack batteries for commercial and industrial sites. Battery modules stack with a control module and a compatible hybrid inverter.
- [Sineng Electric](https://bessproviders.com/sineng-electric/): Sineng supplies storage power conversion and grid-forming solutions. Its utility portfolio includes string and central PCS alongside system controls.
- [SK On](https://bessproviders.com/sk-on/): SK On manufactures battery cells and is expanding into stationary storage with GRIDON. Its next-generation GRIDON Gen 2 targets grid and AI data center applications.
- [Socomec](https://bessproviders.com/socomec/): Socomec integrates outdoor SUNSYS storage systems using CATL LFP battery cabinets. Its modular portfolio covers commercial sites and larger installations.
- [Stem](https://bessproviders.com/stem/): Stem sells storage software and services: the PowerTrack platform with its energy management system, market optimization and managed services for battery fleets.
- [Sumitomo Electric](https://bessproviders.com/sumitomo-electric/): Sumitomo Electric makes vanadium redox flow systems for grid storage. Electrolyte tank size sets the discharge duration independently of stack power.
- [Sungrow](https://bessproviders.com/sungrow/): Sungrow, the Chinese inverter maker, integrates the PowerTitan 3.0 AC block: 6.9 MWh in a 20-ft container with its own string PCS for 2 to 8 hour plants. It has deployed over 15 GWh in the Middle East and Africa alone.
- [Tesla Energy](https://bessproviders.com/tesla-energy/): Tesla builds the Megapack utility battery and the Megablock, a medium-voltage block of four Megapack 3 units of about 20 MWh. It deployed 13.7 GWh of storage in Q3 2026 and lists 110 GWh a year of Megapack capacity across California, Shanghai and Texas.
- [Toshiba](https://bessproviders.com/toshiba/): Toshiba makes SCiB lithium-titanate (LTO) cells and modules for industrial and stationary storage, rated for more than 20,000 charge-discharge cycles.
- [Trina Storage](https://bessproviders.com/trina-storage/): Trina Solar's storage arm sells Elementa 2 Pro, a 5 MWh LFP unit on its own 314 Ah cells, as 10 MWh 2-hour or 20 MWh 4-hour turnkey blocks. It rates the platform at up to 12,000 cycles.
- [Valo Energy (formerly Wärtsilä Energy Storage)](https://bessproviders.com/valo-energy/): Valo Energy is the grid-scale storage company Wärtsilä and RCT Solutions own 50/50, formed from Wärtsilä’s energy storage business on 1 October 2026. It sells the GridSolv Quantum3 AC block and GEMS controls, with 20+ GWh across 130+ projects.
- [Vertiv](https://bessproviders.com/vertiv/): Vertiv, the data center power and cooling group, sells the DynaFlex BESS for data centers and other mission-critical sites, paired with its UPS to cut outages and generator starts. The lithium batteries are UL 9540A tested.
- [ZincFive](https://bessproviders.com/zincfive/): ZincFive makes nickel-zinc UPS battery cabinets for data centers; the BC 2 AI handles AI load pulses as well as standard backup. Its batteries showed no thermal runaway in UL 9540A cell-level testing.

## Optional
- [All records in one file](https://bessproviders.com/llms-full.txt)
- [Sitemap](https://bessproviders.com/sitemap.xml)