Eaton xStorage BESS is an LFP system for utility-scale use with 1 MWh nominal energy, supplied as an AC block. It provides 98.8% AC round-trip efficiency, supports 60 Hz grids, and operates across a 761 to 1200 V DC window. It uses liquid or air cooling.
Use Cases
Use in front of the meter directly on the electricity network is consistent with the specifications of Eaton xStorage BESS. Its nominal energy places it in the utility-scale size class.
Capabilities
A calculated duration of about 1 h at full power from 1 MWh and 1 MW makes Eaton xStorage BESS a candidate for grid services, support that helps operators run the electricity network, and peak shaving, reducing the peak load at the connection point. Its AC block includes the inverter and points to renewable colocation, sitting next to a wind or solar plant and sharing its grid connection.
Nominal energy
1MWh
Rated AC power
1MW
Round-trip efficiency (AC)
98.8 %AC
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Energy & Power
Architecture
DC Side
AC Side
Physical & Footprint
Battery Cells
Lifespan
Protection
Full Specification Sheet
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Plant Round-Trip Efficiency
The calculator estimates the full "plant" round-trip efficiency (RTE) at the point of interconnection. Some values are pre-blocked depending on information on a particular ESS. The rows that are marked "each way" are one-way efficiencies; they are applied on charge and again on discharge. We then square them. To enter a bundled PCS efficiency value, use its rated-power value, not peak. If the PCS skid already includes the LV/MV transformer, set Transformer LV/MV to 100 % so those losses are not counted twice.
More Eaton Systems
5| Compare | Logo | Vendor | System | Energy | Power | Duration | Battery Cell | Open |
|---|---|---|---|---|---|---|---|---|
| Eaton | xStorage BESSAC Block · cabinet | 1MWh | 1MWAC | — | LFP | |||
| Eaton | xStorage BESSAC Block · cabinet | 1MWh | 1MWAC | — | LFP | |||
| Eaton | xStorage BESSAC Block · cabinet | 0.75MWh | 0.75MWAC | — | LFP | |||
| Eaton | xStorage BESSAC Block · cabinet | 0.5MWh | 0.5MWAC | — | LFP | |||
| Eaton | xStorage battery energy storage system (BESS)AC Block · cabinet | 0.25MWh | 0.25MWAC | — | LFP |
About the Vendor
Founded in 1911 and based in Dublin, Ireland, Eaton entered the battery energy storage market in 2024 with its xStorage BESS for commercial, industrial, and utility-scale use. The system offers 250 to 1,000 kWh of usable energy, including containerized C20 units rated at about 1.1 MWh, and Eaton places storage within its Everything as a Grid strategy.
How to Read the Product Page
This profile of xStorage BESS by Eaton is assembled exclusively from public data to support early-stage screening and requires additional due diligence.
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