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CATL TENER Review: 6.25 MWh Utility BESS Container Buyer's Guide 2026

In-depth review of CATL TENER 6.25MWh utility-scale BESS containers — 314Ah cells, safety, augmentation strategy, CapEx and vs BYD Cube T28, EVE, Sungrow PowerTitan.

Chinese.Solar Editorial2026-05-1214 min read
5 MWh · LIQUID-COOLED LFP · 20' BLOCK

CATL TENER is the highest-density 20ft BESS container on the market — 6.25 MWh in a single unit, using LFP 314Ah cells and edge liquid cooling. Utility developers in ERCOT, CAISO, Saudi Arabia and Australia are standardising on TENER for LCOS reasons.

Capacity

6.25 MWh

single 20ft

DC CapEx FOB

$105/kWh

100 MWh order

Round-trip

94.5%

AC-side

Cycle life

12,000

80% DoD

vs BYD Cube T28 and Sungrow PowerTitan

TENER leads on energy density (312 kWh/m² vs BYD 285), PowerTitan wins on integrated PCS (2.5 MW string block). BYD holds a 3-5% price advantage at large scale.

Frequently asked questions

QIs TENER safe against thermal runaway?

CATL claims zero cell-to-cell propagation via LFP chemistry and edge cooling. UL9540A large-scale fire test passed in Q4 2024.

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