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Day-ahead market desk.

A live Nord Pool day-ahead auction. The fossil-free fleet (nuclear, hydro, offshore wind and biomass CHP) is stacked into the merit order against gas, oil and a continental import, and each hour clears at one uniform price set by the marginal unit. Drag the carbon price, swing the wind, trip a reactor and watch the price curve and the fleet margin move.

MERIT SKYLINE · 18:00 CLEARED

Live merit order. Slab width is available MW, height is marginal cost, and the glowing plane is the uniform clearing price. Switch to 2D for the supply-and-demand staircase.

wind
nuclear
hydro
chp
import
gas
peaker
oil
demand

DAY-AHEAD PRICE · drag to scrub PEAK

modeled clear · avg 50.9 SE3 actual 2026-07-23 · avg 34.3 EUR/MWh

MARKET READOUT

CLEARING 90.3€/MWh

DAY AVG 50.9€

PEAK 90€

FLEET REV 6725k€

FLEET MARGIN 4382k€

CO₂ 0.1kt

LEVERS Carbon price80 €/t Demand100% Hydro water value22 €/MWh reservoir scarcity raises water value, lifting hydro up the stack

Wind

Battery power200 MW Battery energy800 MWh Show optimal arbitrage (52093 €/day)

DRILLS

DESK ADVISOR

MARGINAL Hour 18:00 clears at 90.3 EUR/MWh, set by CCGT gas. Of that, about 29 EUR/MWh is the carbon cost at 80 EUR/t. ▸ Every dispatched unit is paid this price; cheaper units bank the difference.
SPREAD Peak-to-trough spread is 67 EUR/MWh across the day. ▸ Wide spread favours storage arbitrage and shifting flexible load into the trough.
ARBITRAGE Optimal battery dispatch earns 52093 EUR (1.5 cycles) on this curve. ▸ Charge through the overnight trough, discharge into the evening peak.
FLEET Fossil-free fleet revenue 6725.1k EUR, margin 4382.1k EUR, 82 tCO2 system-wide. ▸ Higher carbon and tighter supply both grow the fossil-free margin.