In this section

Related Links

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
March 05, 2026 03/03/2026 04:58 PM EST CSV
February 19, 2026 02/19/2026 01:46 PM EST CSV
February 20, 2026 02/20/2026 08:49 PM EST CSV
February 21, 2026 02/21/2026 11:29 AM EST CSV
February 22, 2026 02/22/2026 05:46 PM EST CSV
February 23, 2026 02/23/2026 07:22 PM EST CSV
February 24, 2026 02/24/2026 09:29 AM EST CSV
February 25, 2026 02/25/2026 09:21 PM EST CSV
February 26, 2026 02/26/2026 11:46 AM EST CSV
February 27, 2026 02/27/2026 09:24 AM EST CSV
February 28, 2026 02/28/2026 12:29 PM EST CSV
March 01, 2026 03/01/2026 02:45 PM EST CSV
March 02, 2026 03/02/2026 03:38 PM EST CSV
March 04, 2026 03/03/2026 04:58 PM EST CSV
March 03, 2026 03/03/2026 04:58 PM EST CSV