GB BESS revenues hit £70k/MW/year in March 2026

GB grid-scale BESS revenues reached £70k/MW/year in March 2026, per Modo Energy's monthly tracker. That is the headline number for the GB market as a whole; the figure aggregates across revenue streams including wholesale trading, DC, and balancing mechanism exposure.

The £70k/MW/year level matters as a benchmark because it sits above the thresholds commonly cited in project finance underwriting for 1-hour and 2-hour assets. It does not, by itself, confirm profitability (capex, opex, and augmentation costs differ sharply across projects), but it narrows the gap between modelled and realised revenues that plagued GB BESS underwriting in 2022–23.

No breakdown by revenue stream or asset duration is available from the headline alone. Traders and asset managers should treat the number as a market-level reference, not a proxy for individual asset performance. Dispatch strategy, grid location, and connection terms all drive material divergence from the fleet average.

The data point lands as GB installed BESS capacity continues to grow: Britain's largest battery storage scheme came online in November 2025, per Energy Live News. That growth means competitive pressure on frequency and balancing products is rising even as the headline revenue figure improves.