D-1 (DAY BEFORE DELIVERY)
D (DELIVERY DAY)
SPP market timings:
Day-Ahead bids close
11:00 CPT (D-1)
Day-ahead clearing schedule published
16:00 CPT (D-1)
Operating day begins
00:00 CPT (D)
Real-Time re-clears AS + energy
Every 5 minutes (D)
Physical delivery
Real time