What is the cost of grid-scale battery storage?

Installed costs for grid-scale lithium-ion BESS range from €150-200/kWh for 2-hour duration systems to €200-280/kWh for 4-hour systems. Costs have fallen 15-20% since 2022 due to lower cell prices and more competitive EPC markets.

Last updated: 15 Mar 2026 · 3 companies indexed

Grid-Scale Storage — United Kingdom

3 grid-scale storage companies in United Kingdom. Utility-scale BESS projects (10 MW+) are increasingly required for grid balancing as renewable penetration exceeds 50%. Average installed costs dropped to €150-200/kWh for 2-hour systems in 2024, but 4-hour duration projects remain at €200-280/kWh.

Companies — Showing 1–3 of 3

CompanyRank

Entrust Microgrid

Cheshire, GB

Battery Energy Storage

Grid Battery Storage (GBSL)

Surrey, GB

Grid Battery Storage (GBSL) — 6 MW total battery storage capacity across 1 UK project(s). Data: UK Government REPD.

Aura Power / South East Grid Storage Two

Essex, GB

Aura Power / South East Grid Storage Two — 11 MW total battery storage capacity across 1 UK project(s). Data: UK Government REPD.

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