Negative prices intensify
Negative prices = overproduction: abundant midday solar meets weak demand. Negative intervals ARE the arbitrage opportunity: the more of them, the wider the spread to the expensive evening peak.
Share of negative Day-Ahead price intervals per month · zone GB · source: our ENTSO-E database.
Who earns what — and where?
British market roles, clearly separated.
Balancing responsible / trader
Reads here when charging is worthwhile: at negative prices, you are paid to charge.
Asset operator
More negative intervals = more economically usable cycles for the battery.
Investor
A rising share of negative intervals widens the business case — without extrapolating from a single month.
System operator (NESO) / exchanges
Negative prices reflect overproduction; the market clears the surplus, the system operator handles grid balance. No trading profit.
Quality data for imbalance settlement
The potential shown here only becomes real revenue if it can be settled cleanly: revenue-quality metering data and market settlement decide what is billable. Stromfee builds exactly this layer of transparency.