D3 · revenue transparency
The real Day-Ahead price curve
The raw hourly Irish Day-Ahead curve for the last quoted day. The midday dip (wind/solar) and the evening peak form the spread a battery captures.
185
Ø €/MWh
115
min €/MWh
294
max €/MWh
0
neg. hours
Hourly Day-Ahead price (average) · zone IE_SEM · 2026-06-14 · the red line marks zero — below it, prices are negative.
D3 · Who earns what — and where?
Who earns what — and where?
Irish market roles, cleanly 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.
Grid operator (EirGrid) / SEMOpx
Negative prices reflect over-production; the market clears the surplus, the transmission operator keeps the grid balanced. No trading profit.