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39 Manufacturers

BESS DC Block Manufacturers

Compare cabinet and containerized battery products for C&I and utility-scale Battery Energy Storage System projects.

39 manufacturers
Manufacturer Region Products Founded Ownership
AlphaESS China Aster 5000 (5 MWh) 2012 Private
Ampace China UniC AG300-150 C&I, PU100 Data Center 2021 Private
BYD China MC Cube-T (5–6.4 MWh), Haohan (7.3–14.6 MWh) 1995 Listed
CALB China CALB BESS Container 2007 Listed
CATL China TENER (6.25 MWh), TENER Stack (9 MWh), TENER Flex (752 kWh), EnerC+ (4.07 MWh), EnerOne+ (407 kWh) 2011 Listed
CNTE China Utility-Scale BESS Container 2019 Private
CRRC China 5 MWh Liquid Cooling Container 2015 Listed
Canadian Solar (e-STORAGE) Canada SolBank 3.0 (5 MWh), SolBank 3.0 Plus (5 MWh) 2001 Listed
Cornex New Energy China M5 APEX (5.015 MWh), M6 (6.262 MWh) 2021 Private
EVE Energy China Mr. Giant (5 MWh), 6.9 MWh Container 2001 Listed
Envision Energy China EnPower 5.6 MWh 2007 Private
FoxESS China EQ6000 Plus 2019 Private
Ganfeng Lithium China 10 MWh Liquid Cooling Container 2000 Listed
Gooree China GR5000L (5,016 kWh) 2021 Private
Gotion High-Tech China BESS Container Systems 2006 Listed
Great Power China Utility-Scale Liquid Cooling Container 2001 Listed
Hithium China ∞Power (6.9 MWh, 8h), ∞Power N (2.28 MWh, 1h, Sodium-ion), ∞Power Flexsso, ∞Power (6.25 MWh, 4h), ∞Power (6.25 MWh, 2h), ∞Block (5.016 MWh), ∞Block (4.180 MWh), ∞Block (3.44 MWh), ∞Power (418 kWh), ∞Block (261 kWh) 2019 Private
Hoenergy China Utility-Scale Liquid Cooling Container 2005 Private
Huawei Digital Power China LUNA2000-4472-2S (4,472 kWh), LUNA2000-2.0MWH-1H0 (2,064 kWh), LUNA2000-2.0MWH-1H1 (2,032 kWh), LUNA2000-2.0MWH-2H1 (2,032 kWh) 2021 Private
HyperStrong China HyperBlock III (5.016 MWh), HyperBlock M (12.523 MWh, 2h), HyperBlock M (12.8 MWh, 4h) 2009 Listed
Jinko ESS China SunTera G3 (6,251 kWh), SunTera (5,010 kWh) 2022 Listed
Kehua China S³-EStation 3.44 (3.44 MWh), S³-EStation 5 (5 MWh) 1988 Listed
Linyang Energy China Power Atlantic Liquid Cooling Container 1995 Listed
Lishen China LS-C5M-A 5 MWh Container, LS-C417K+ C&I Cabinet 1997 Private
Maxxen Switzerland DC Container (5 MWh) 2024 Private
Narada Power Source China Center L Ultra 6.25 MWh 1994 Listed
Prevalon Energy USA HD 511 Integrated Energy Storage Platform 2024 Private
Pylontech China L5000-BAT (5.016 MWh), L3300-BAT (3.3 MWh), L417-BAT (417 kWh), A329-BAT (329 kWh) 2009 Listed
Renepoly China ES5016 Liquid Cooling Container 2016 Private
Risen Energy China eTronP 3.79 MWh, eFlex 836 kWh 1986 Listed
Saft (TotalEnergies) France Intensium Max+, Saft Flex 1918 Listed
Samsung SDI South Korea SBB 1.0 (3.841 MWh), SBB 1.5 (5.259 MWh) 1970 Listed
Sermatec China EASYCUBE (835 kWh), SERLATTICE (3.134 MWh), SERLATTICE (4.888 MWh), SERLATTICE (5.015 MWh) 2017 Private
Sigenergy China SigenStack C&I 2022 Private
SolaX Power China ORI-B5015L-2H (5,015 kWh) 2012 Listed
Sunwoda China NoahX-1500/2752 (2.752 MWh), NoahX-1500/4170 (4.170 MWh), NoahX-L344 (0.344 MWh) 1997 Listed
Trina Storage China Elementa 3 (6.25 MWh) 1997 Listed
ZTT Group China ENERGRID NA7 (7.58 MWh) 1992 Listed
Zhiguang Electric China Utility-Scale BESS Container 1999 Listed

What is a DC Block?

A DC block is a pre-assembled containerized unit that packages battery modules, a battery management system (BMS), thermal management (liquid or air cooling), and fire suppression into a single enclosure. DC blocks output DC power and must be paired with an external power conversion system (PCS) to connect to the AC grid.

DC blocks are the most common building block for utility-scale BESS projects (50 MW and above). Because the PCS is separate, project developers can mix and match DC blocks from one manufacturer with a PCS from another, giving more flexibility in system design, procurement, and maintenance.

What to compare when evaluating DC blocks

When shortlisting DC block suppliers for a BESS project, these are the key technical specifications EPCs, developers, and investors typically evaluate:

C-Rate
0.25C – 1C
1h, 2h, or 4h duration — determines power-to-energy ratio
Energy Capacity
4 – 9+ MWh
Per container, depends on cell density and configuration
Chemistry
LFP dominant
Some manufacturers also offer NMC or sodium-ion variants
Round-Trip Efficiency
85 – 95%
DC-side; AC RTE depends on PCS losses
Cooling Method
Liquid or Air
Liquid cooling is increasingly standard for utility-scale
Certifications
UL 9540A, IEC 62619
UL 9540A for fire safety, IEC 62619 for battery safety, UN 38.3 for transport

Frequently Asked Questions

What is the difference between a DC block and an AC block?

A DC block contains only the battery system (cells, BMS, thermal management, fire suppression) and outputs DC power. An AC block integrates the PCS (inverter) inside the same enclosure, outputting grid-ready AC power. DC blocks offer more flexibility in system design since the PCS is selected and sized independently.

Why do most utility-scale BESS projects use DC blocks?

DC blocks allow developers to decouple battery procurement from PCS procurement. This gives flexibility to choose best-in-class suppliers for each component, negotiate separately, and replace or augment batteries independently of the inverter over the project's lifetime. It also simplifies thermal management since the PCS generates its own heat.

What certifications should a DC block have?

For bankability, most lenders and insurers require UL 9540A (fire safety testing for energy storage), IEC 62619 (battery safety), and UN 38.3 (transport safety). Regional requirements vary — European projects typically require CE marking, while North American projects need UL listing. Additional certifications like IEC 62477 and NFPA 855 compliance are increasingly expected.

How does DC block capacity affect project cost?

Higher-capacity DC blocks (6+ MWh per container) reduce the number of containers needed for a given project size, which lowers balance-of-plant costs (foundations, cabling, land). However, higher energy density may require more sophisticated thermal management. The trend is toward denser blocks as cell-level energy density improves.

Explore other categories

Battery Cell 24 manufacturers
PCS 27 manufacturers
AC Block 35 manufacturers
Plant Controls 20 manufacturers

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