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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
October 09, 2025 10/07/2025 09:29 AM EDT CSV
September 25, 2025 09/25/2025 09:16 AM EDT CSV
September 26, 2025 09/26/2025 09:08 AM EDT CSV
September 27, 2025 09/27/2025 09:09 AM EDT CSV
September 28, 2025 09/28/2025 06:38 PM EDT CSV
September 29, 2025 09/29/2025 10:55 AM EDT CSV
September 30, 2025 09/30/2025 12:46 PM EDT CSV
October 01, 2025 10/01/2025 09:08 AM EDT CSV
October 02, 2025 10/02/2025 10:24 AM EDT CSV
October 03, 2025 10/03/2025 09:17 AM EDT CSV
October 04, 2025 10/04/2025 09:24 AM EDT CSV
October 05, 2025 10/05/2025 05:41 PM EDT CSV
October 06, 2025 10/06/2025 09:26 AM EDT CSV
October 07, 2025 10/07/2025 09:28 AM EDT CSV
October 08, 2025 10/07/2025 09:29 AM EDT CSV