An interactive model of how a grid battery charges, discharges and earns — across wholesale arbitrage and contracted capacity and frequency services — and how the spread, cycling and services stack into annual revenue, EBITDA and asset value for an investor.
A grid battery makes money three ways: arbitrage — buying power when it's cheap and selling when it's dear — plus contracted capacity-market and frequency-response payments. Watch it charge at the price troughs and discharge at the peaks, with energy and cash flowing both ways, and see how the spread and services stack into EBITDA — net of the degradation that hard cycling causes.
Year-1 financials flow live from the simulation above: revenue £0 and EBITDA £0 p.a. Set your deal terms below — the unlevered IRR (asset return) and levered IRR (return to equity, after debt) recompute instantly.
Illustrative model. Represents a ~50 MW / 100 MWh (2-hour) grid battery, ~85% round-trip efficiency. Revenue = energy cycled × the captured price spread (arbitrage, net of charging cost) + contracted capacity-market and frequency-response payments. Operating costs include an augmentation/degradation provision that rises with cycling, plus O&M, network charges, insurance and rates. EBITDA = revenue − operating costs. The investment case is a simplified DCF: unlevered IRR discounts free cash flow to the firm (EBITDA − cash tax − capex) plus an exit on the EV/EBITDA multiple; levered IRR is the equity cash flow after debt. Battery revenues are volatile and have historically fluctuated sharply. For illustration only — not investment advice, and not any specific asset.