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Three-Day Reliability Region Demand Forecast

Download the ISO's hourly demand forecast for each day as forecasted in-day and the preceding two days, broken down by reliability region. The region's transmission system is divided into eight reliability regions that reflect the system's operating characteristics and major constraints. New England's load zones, which represent aggregations of pricing nodes within specific areas, generally correspond to these reliability regions.

 

Note: NEMASSBOST = Northeast Massachusetts and Boston Area Reliability Region; SEMASS = Southeast Massachusetts Reliability Region; WCMASS = Western/Central Massachusetts Reliability Region; % = the reliability region's demand as a percentage of the zonal total. The demand included in the forecast is in megawatts (MW).

Forecasts prior to May 24, 2017, can be found on the Three-Day Reliability Region Demand Forecast Archive.

 

 
Three-Day Reliability Region Demand Forecast
Description Timestamp Download
April 11, 2026 04/09/2026 04:33 PM EDT CSV
March 28, 2026 03/28/2026 04:08 PM EDT CSV
March 29, 2026 03/29/2026 04:36 PM EDT CSV
March 30, 2026 03/30/2026 04:26 PM EDT CSV
March 31, 2026 03/31/2026 04:39 PM EDT CSV
April 01, 2026 04/01/2026 04:48 PM EDT CSV
April 02, 2026 04/02/2026 04:38 PM EDT CSV
April 03, 2026 04/03/2026 05:12 PM EDT CSV
April 04, 2026 04/04/2026 04:39 PM EDT CSV
April 05, 2026 04/05/2026 04:27 PM EDT CSV
April 06, 2026 04/06/2026 04:39 PM EDT CSV
April 07, 2026 04/07/2026 04:35 PM EDT CSV
April 08, 2026 04/08/2026 04:36 PM EDT CSV
April 10, 2026 04/09/2026 04:33 PM EDT CSV
April 09, 2026 04/09/2026 04:33 PM EDT CSV