ERCOT 4CP · 2023
The four coincident peaks of summer 2023, with dates, peak hours, and system load.
| Month | Peak day | Peak hour (CT) | System load |
|---|---|---|---|
| June | Tue, Jun 27 | 5:00 PM CT | 80.8 GW |
| July | Mon, Jul 31 | 4:00 PM CT | 82.9 GW |
| August | Thu, Aug 10 | 5:00 PM CT | 85.5 GW |
| September | Fri, Sep 8 | 4:00 PM CT | 84.3 GW |
Source: ERCOT official settled hourly load (post-settlement). Peak hour shown at hourly resolution; ERCOT's official 15-minute 4CP intervals are published after final settlement — see methodology. Free to republish with a link: "Peak data by WattMarkets".