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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
January 23, 2026 01/21/2026 09:30 AM EST CSV
January 09, 2026 01/09/2026 10:09 AM EST CSV
January 10, 2026 01/10/2026 09:13 AM EST CSV
January 11, 2026 01/11/2026 09:15 AM EST CSV
January 12, 2026 01/12/2026 01:37 PM EST CSV
January 13, 2026 01/13/2026 02:25 PM EST CSV
January 14, 2026 01/14/2026 11:36 AM EST CSV
January 15, 2026 01/15/2026 10:36 AM EST CSV
January 16, 2026 01/16/2026 09:24 AM EST CSV
January 17, 2026 01/17/2026 05:38 PM EST CSV
January 18, 2026 01/18/2026 09:26 AM EST CSV
January 19, 2026 01/19/2026 09:28 AM EST CSV
January 20, 2026 01/20/2026 09:28 AM EST CSV
January 22, 2026 01/21/2026 09:30 AM EST CSV
January 21, 2026 01/21/2026 09:30 AM EST CSV