BESS PowerBox 1 MW/1.1 MWh, 400 VAC
Grid-ScaleAC Block20 ft containerUpdated Aug 28, 2026
Capture Energy BESS PowerBox 1 MW/1.1 MWh, 400 VAC is an AC block battery energy storage system with about a 1-hour duration. It uses LFP chemistry, forced air cooling, and 90 Ah prismatic cells. The unit weighs 19.5 tonnes (42,990 lb).
Use Cases
Use in front of the meter is consistent with the specifications of Capture Energy BESS PowerBox 1 MW/1.1 MWh, 400 VAC. By energy capacity, it belongs to the utility-scale class, and it is certified to medium- or high-voltage grid connection rules (EN 50549-2).
Capabilities
Its shortest listed configuration is 1 h and the specifications indicate for grid services, work that helps keep the electricity network running, and peak shaving, cutting the power drawn from the grid at peak times. Its AC block includes the inverter and points to Capture Energy BESS PowerBox 1 MW/1.1 MWh, 400 VAC for renewable colocation, storing output from a wind or solar plant on the same site.
Nominal energy
1.1MWh
Rated AC power
1MW
Duration
1hour
C / P rate
1C
What does this system typically cost?
BESSBASE.com user price estimates for BESS PowerBox 1 MW/1.1 MWh, 400 VAC by Capture Energy and similar storage systems. The ranges are LDP (Landed Duty Paid) prices per kWh that cover all expenses of delivering the goods to the buyer's premises, including production, shipping, sales margins, and import duties.
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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.
Site Space Required
Shared: one 3 m aisle serves both neighbours. Dedicated: each unit keeps its own 3 m, so gaps double to 6 m.
Single unit — matches the stored area_sqm convention.
More Capture Energy Systems
8| Compare | Logo | Vendor | System | Energy | Power | Duration | Battery Cell | Open |
|---|---|---|---|---|---|---|---|---|
| Capture Energy | BESS PowerBox LC 1 MW/2.3 MWh, 400 VACAC Block · 20 ft container | 2.32MWh | 1MWAC | 2h0.5C | LFP314 Ah · Prismatic | |||
| Capture Energy | BESS PowerBox 1.2 MW/2 MWh, 690 VACAC Block · 20 ft container | 2.06MWh | 1.2MWAC | 2h0.6C | LFP280 Ah · Prismatic | |||
| Capture Energy | BESS PowerBox 1 MW/1.7 MWh, 690 VACAC Block · 20 ft container | 1.72MWh | 1MWAC | 2h0.6C | LFP280 Ah · Prismatic | |||
| Capture Energy | BESS PowerBox 0.8 MW/1.35 MWh, 690 VACAC Block · 20 ft container | 1.38MWh | 0.8MWAC | 2h0.6C | LFP280 Ah · Prismatic | |||
| Capture Energy | BESS PowerBox 1 MW/1.1 MWh, 400 VACAC Block · 20 ft container | 1.1MWh | 1MWAC | 1h1C | LFP90 Ah · Prismatic | |||
| Capture Energy | BESS PowerBox 0.6 MW/1 MWh, 690 VACAC Block · 20 ft container | 1.03MWh | 0.6MWAC | 2h0.6C | LFP280 Ah · Prismatic | |||
| Capture Energy | BESS PowerBox 0.5 MW/0.55 MWh, 400 VACAC Block · 20 ft container | 0.55MWh | 0.5MWAC | 1h1C | LFP90 Ah · Prismatic | |||
| Capture Energy | BESS PowerPack LC 125 kW/261 kWh, 400 VACAC Block · cabinet | 0.26MWh | 0.13MWAC | —0.5C | LFP314 Ah · Prismatic |
About the Vendor
Capture Energy, founded in 2023 and based in Gothenburg, Sweden, develops and delivers turnkey BESS for European energy storage and flexibility markets. It operates across the Nordics and has offices in Stockholm, Norway, Denmark, Finland, and Spain, and its systems start at 0.5 MW with liquid-cooled PowerBox units, the Capture Controller, and the Cloud platform.
How to Read the Product Page
This profile of BESS PowerBox 1 MW/1.1 MWh, 400 VAC by Capture Energy is assembled exclusively from public data to support early-stage screening and requires additional due diligence.
Always confirm these terms and technical specifications directly with the vendor and project stakeholders. Reflect all agreed-upon details in the legal agreements before making any investment decisions.
