PJMWATCH43% chance today ends in the season's top five · window 4:00 PM ET–6:00 PM ET

Peak ledger

Monday, August 31, 2026

Our call
2%
CLEAR · window 3:00 PM CT–5:00 PM CT
the chance the day would set August's peak
The day
67.5 GW
max at 12:00 AM CT
Outcome
RANK 31
beaten, the month leader is 91.0 GW
What was behind the 2%
Forecast max
89.0 GW
Month max
91.0 GW
Margin
-2.0 GW
Temp anomaly
-2.8 °F
Est. curtailment
1.5 GW
Est. battery
-0.2 GW
p (raw)
4%
p (final)
2%

model hybrid-1.1.0 · computed 1:24 AM CT · stress-test these drivers →

This day ranks #31 of 31 observed days this month. See the full month ladder →

All values from real ERCOT feeds. Calls are logged to an append-only hash chain before intervals close (methodology). Free to republish with a link: "Peak data by WattMarkets".