Day-Ahead vs. Real-Time

Day-Ahead: Setting the Baseline

The DA market clears a 24-hour schedule the day before delivery. Every generator bids, every load forecasts, and the ISO finds the least-cost dispatch for each hour.

This 2-bus system has:

• Gen Hub (Bus 1): Nuclear (500 MW, $20) and Gas CC (400 MW, $50)
• Load Center (Bus 2): Wind Farm (200 MW, $0) and Gas Peaker (300 MW, $150)
• A 350 MW transmission line connecting them

Load follows a realistic 24-hour shape — low overnight, peaking mid-afternoon. Wind output is higher at night and drops during the day.

Solve the DA market to establish the committed schedule and DA prices.