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A CROSTORION containerised battery system standing at a solar plant
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Utility-scale storage

CROSTORION
ESS 2750 & ESS 5015

Containerised battery energy storage in a standard six-metre shipping container — 2.75 or 5 MWh per container, engineered for renewables, grid services and black start.

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The product

Grid-scale capacity in a six-metre container

Fully integrated systems — LiFePO₄ cells, liquid cooling, BMS, fire suppression and controls — delivered as a container and commissioned onto the platform.

Used for solar and wind firming, peak shaving and valley filling, frequency regulation, microgrids and backup. Scales by paralleling containers on a common DC busbar through a centralised PCS and step-up transformer — a 100 MWh plant is twenty ESS 5015 units.

LiFePO₄Liquid-cooledIP55Black start supportGrid-connected · off-grid · VPP
A CROSTORION six-metre battery container installed at a solar power plant
In the yard

A container, before it leaves

Shot at our own site during final checks — the same walk-around a client gets at factory acceptance.

A CROSTORION battery storage container at the yard during final checks
CROSTORION utility-scale container — final checks before delivery
Two container classes

Specifications

Containerised BESS

CROSTORION ESS 2750

2.75 MWh
Rated energy
1,375 kW
Rated power (0.5C)
CellsLiFePO₄ 280 Ah prismatic
Architecture8 clusters · 1228.8 V DC
PCS & outputSiC PCS up to 99% · 10 / 35 kV
CoolingLiquid, glycol · cell ΔT ±2.5 °C
Fire suppressionDual-level, pack & cabin, gas
ProtectionContainer IP55 · pack IP67
Cycle life8,000 cycles (cell, 0.5C)
Format6 m container · ~25 t
Grid featuresBlack start · on/off-grid · VPP
ComplianceTransport-certified — UN 38.3, MSDS
Containerised BESS

CROSTORION ESS 5015

5,016 kWh
Rated energy
2,500 kW
Max power (≤0.5C)
CellsLiFePO₄ 314 Ah
Architecture12 racks × 418 kWh · 1331.2 V DC
PCS & outputString or centralised · 1500 V DC
CoolingLiquid, glycol · in-pack ΔT <2.5 °C
Fire suppressionAerosol + water · gas detection
ProtectionIP55 · C4 corrosion class
DutyUp to 2 cycles per day
Format6 m container · ~42 t
Grid featuresBlack start · on/off-grid · VPP
ComplianceDesigned to UL 1973 · UL 9540A · NFPA 855 · UN 38.3

Full electrical specifications, single-line diagrams and certificates in the datasheet on request.

Grid services

Peak shaving and valley filling, frequency regulation and ancillary services at the point of connection.

Renewables

Solar and wind firming — store the midday or gust surplus, deliver it when the grid pays for it, cut curtailment.

Black start & microgrids

Autonomous restart in off-grid and microgrid scenarios, with grid-connected, islanded and VPP operating modes.

Open Crostorion battery container showing the full rack stack
Scaling up

From one container to a 100 MWh plant

Containers parallel on a standardised DC busbar into a centralised PCS and a dedicated step-up transformer, run by one EMS. Twenty ESS 5015 units make a 100 MWh installation — sized for large wind and solar portfolios.

  • Standard container logistics — ISO land and sea transport standards, under 15 m² of footprint per unit.
  • One EMS across the plant — BMS, PCS, PV, wind and gensets integrated under a single platform.
  • Six-layer safety design — pre-warning, detection, prevention, isolation, ventilation, extinguishing.
Beyond the hardware

A utility container is layer one of three

The container earns its keep on site — but a licensed participant can also optimise it against day-ahead prices on the power exchange of your market and offer it into the balancing market. That is where a manufacturer stops and we continue.

See the three layers
Brochures

Both container classes, as PDFs

Electrical data, dimensions, cooling, fire protection and grid-connection notes for each class.

Storion ESS 2750 — product brochurePDF2.6 MBEnglish Storion ESS 5015 — product brochurePDF2.0 MBEnglish
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