How a German power trade on the EEX is captured, how volume aggregates to MWh, and how mark-to-market P&L is calculated when prices move.
Base load delivers power 24 hours a day, every day of the delivery month — including weekends and holidays. It's round-the-clock energy, typically cheaper per MWh because it includes low-demand off-peak hours.
Peak load covers only 12 hours on weekdays (08:00–20:00). No weekends, no holidays. Because it targets the highest-demand window, peak products command a premium price.
ETRM systems must treat these as separate volume streams with different hours and prices, then aggregate both to MWh for valuation.
MW describes capacity. MWh describes energy delivered. ETRM converts capacity to energy: Volume (MWh) = MW × Hours/day × Days
Trade value = Trade price × Volume (MWh).
Market value = Current market price × Volume (MWh).
For a BUY trade: if the market price rises above your trade price, you have an unrealised profit. If it drops, you're sitting on a loss.
For a SELL trade, the logic inverts. MTM is computed per component (base, peak) and then summed.
Markets move. At T0 (trade date), market price equals trade price — MTM P&L is zero. At T1 (say T+7 days), prices have shifted. The delta between new and old MTM reveals how much the position gained or lost.
Adjust the inputs below and watch volume, valuation, and P&L update in real time.