VoltGrid BESS1 MWh — 1000+ MWh
Row of 20 ft containerised BESS energy storage units next to a solar farm and a transformer substation

Industrial and utility segment · Poland

BESS Energy Storage from 1 MWh to 1000 MWh

Short answer

We deliver containerised energy storage systems ranging from 1 MWh to over 1000 MWh. Base block: 1 MW power / 2 MWh capacity in a liquid-cooled 20 ft container with LFP cells. Modular configuration lets you scale the installation without changing the system architecture.

1–1000+

MWh — supported capacity range

6.9

MWh max. in a single 20 ft container

86–89%

AC round-trip efficiency at 0.5C

10 years

capacity guarantee at 70% SOH

Architecture

Base block: 1 MW / 2 MWh in a 20 ft container

Every project, regardless of scale, is built from the same repeatable blocks. This means scaling up never requires redesigning the system.

20 ft container

6.06 × 2.44 m, weight 30–38 t, 5.0–6.9 MWh per unit. Transport without oversize permits.

Liquid cooling

Cell operating window of 15–35°C regardless of weather. Own consumption of 1.5–2.5% of throughput energy.

LFP cells

CATL, EVE Energy, Hithium, BYD. 8,000–11,000 cycles, 10–12-year guarantee at 70% SOH.

PCS and EMS

1.25–2.5 MW PCS at 98.3–98.8% efficiency, EMS integrated with SCADA and the balancing market.

Numbers, not adjectives

LFP cells: CATL, EVE Energy, Hithium, BYD

The cell manufacturer matters more than the logo on the container. Our quotes always specify the exact model and cell capacity.

Comparison of LFP cells used in 20 ft containers
ManufacturerModelCell capacityCyclesWarranty
CATLEnerC / EnerOne306 / 314 Ah8,000–10,00010 years / 70% SOH
EVE EnergyLF628628 Ah10,00010 years / 70% SOH
HithiumMIC 11301,130 Ah11,00012 years / 70% SOH
BYDBlade 2710 Ah10,00010 years / 70% SOH
REPT BatteroWending 320320 Ah8,00010 years / 70% SOH
CALBL500587 Ah10,00010 years / 70% SOH
Detailed comparison of LFP cells

Track record

Volume delivered

412 MWh

total volume delivered

38

20 ft containers in operation

9

grid-scale projects above 10 MWh

Selected projects
ProjectConfigurationApplicationYear
4.8 MW PV farm, Wielkopolska region2.5 MW / 10 MWhPV output shifting2025
Manufacturing plant, Silesia region1 MW / 2 MWhPeak shaving2025
Grid-scale project, Mazovia region10 MW / 20 MWhCapacity market2024
EV charging hub, Lower Silesia region0.5 MW / 1 MWhConnection power buffer2024

FAQ for investors

Request a quote — pricing in 48 h

Send us the project scale in MWh, the site location and the available grid capacity. We reply with a configuration, CAPEX range and delivery schedule.