Real-time weather data, model guidance, and NWS alerts organized by U.S. power market ISO regions. Weather Workbench brings these official forecast products into a single monitoring workspace so users can quickly scan conditions without switching between multiple sources. Select a region to view forecasts, precipitation, and weather sources.
Click a region to view detailed weather data. Colors reflect active alert severity.
Map boundaries are approximate and illustrative. ISO/RTO territories frequently cross state lines; several states are served by multiple operators.
Background
A short tour of the structure of U.S. wholesale electricity markets, why weather drives them, and how to use Weather Workbench day-to-day.
In-depth explainers on the weather-and-energy interface — degree days, CPC outlooks, winter storm reliability, renewable forecasting, and hurricane season impacts on the grid.
What Permanent Daylight Saving Time Would Mean for the Power Grid
The U.S. House voted 308–117 to make Daylight Saving Time permanent. For grid operators, the change is more than a calendar fix — it shifts when solar generation arrives relative to morning demand, reshapes the winter duck curve, and eliminates the 23- and 25-hour trading days that create scheduling headaches twice a year.
NYISO's Near-Record Demand in the July 2026 New York Heat Wave
As a July 2026 heat dome pushed Central Park to 100°F, New York's grid operator (NYISO) served about 32,410 MW — within striking distance of the state's all-time record. A short look at the heat, the demand, and the calls to conserve.
PJM's Near-Record Peak and the July 2026 East Coast Heat Wave
On July 2, 2026, an East Coast heat dome pushed PJM electricity demand to roughly 163,000 MW — within striking distance of the grid's all-time record. A short look at what happened and why the grid held.
How Weather Drives U.S. Power Markets
A practical overview of how temperature, wind, solar, and storm patterns translate into electricity demand, generation output, and wholesale prices across the nine major U.S. ISO regions.
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