The Day-ahead (DA) market is the foundation of Germany’s power system, where next-day electricity prices are set through a single auction that balances generation and consumption.

For batteries, it’s the core merchant market.

By shifting energy from low-price hours to high-price peaks, BESS capture the deepest structural spreads in the power system. These spreads define energy arbitrage revenues and guide state-of-charge (SoC) plans for intraday and ancillary services.

In October 2025, the DA market moved from hourly to quarter-hourly settlement, sharpening price signals and rewarding fast-acting flexibility.

Subscribers will learn:

• How DA prices form and why volatility persists.
• The fundamentals driving the deepest DA power spreads in Europe’s major markets.
• How batteries position to capture value in the DA market.

How does the Day-ahead market work?

The German DA market clears next-day prices in 96 fifteen-minute blocks in a single auction at 12:00 CET.

Bids are aggregated into supply and demand curves:

• Sell orders are sorted from lowest to highest price (cheapest generators first).
• are sorted from highest to lowest price (most willing consumers first).