Scale 10–50 MWh
20 MWh Energy Storage — Grid-Scale Project for the Capacity Market
Short answer
A 20 MWh storage system is typically 10 MW / 20 MWh in a 2h configuration, made up of four 20ft containers at 5 MWh each, four PCS units at 2.5 MW each, and a 12.5 MVA transformer substation. This is the most common scale for projects entering capacity market auctions.
- 4–8 × 20ft containers
- 5–25 MW
- 0.5C for the capacity market, 0.25C for ancillary services
Who this scale is for
- A developer holding 10–25 MW grid connection terms
- An owner of a solar or wind farm expanding the project into a hybrid
- An entity entering a capacity market auction with a storage unit
Configuration, site and grid connection
Revenue models realistic for this scale
- Capacity market agreement — standby revenue per MW of obligation
- Ancillary services: aFRR, mFRR, primary frequency regulation
- Arbitrage on the TGE power exchange and the balancing market
Reference implementation
| Parameter | Value |
|---|---|
| Configuration | 5–25 MW / 10–50 MWh |
| Containers | 4–8 × 20ft containers |
| Grid connection | MV 30 kV or HV 110 kV above 20 MW |
| Delivery time | 12–18 months including permitting and grid connection |
Related
Applications and technology for this scale
Application · 2–40 MWh
Solar Farm
No more negative prices and curtailment — shift production to the evening peak.
Application · 1–10 MWh
Manufacturing Plant
Peak shaving and capacity-fee reduction for contracted capacity of 1–10 MW.
Technology
Liquid Cooling
Impact on degradation, round-trip efficiency and self-consumption.
FAQ
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.