PJMWARNING64% chance today ends in the season's top five · window 3:00 PM ET–6:00 PM ET

Peak ledger

Wednesday, September 2, 2026

Our call
1%
CLEAR · window 2:00 PM CT–5:00 PM CT
the chance the day would set September's peak
The day
67.0 GW
max at 12:00 AM CT
Outcome
RANK 2
beaten, the month leader is 84.0 GW
What was behind the 1%
Forecast max
85.6 GW
Month max
84.1 GW
Margin
1.6 GW
Temp anomaly
-0.9 °F
Est. curtailment
1.5 GW
Est. battery
-0.2 GW
p (raw)
26%
p (final)
1%

model hybrid-1.1.0 · computed 3:00 AM CT · stress-test these drivers →

This day ranks #2 of 2 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".