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How to find summer and winter peak demand for ISO-NE through 2045?

Accessing long-term peak demand forecasts in the North America Power Tool

Krishna Sharma avatar
Written by Krishna Sharma
Updated over 2 weeks ago

You can find summer and winter peak demand forecasts for ISO-NE through 2045 in the North America Power tool.

Using the North America Power Tool

  1. Open the North America Power Tool.

  2. Navigate to Demand > Peak Demand.

  3. Select the Net Peak report.

  4. The data is broken down by year and by ISO, including ISO-NE, and extends through 2045.

Additional source

You can also find detailed peak demand breakdowns in the Load Forecast – Demand Excel file that accompanies the following report:

Wood Mackenzie | North America power markets strategic planning outlook: 2025 H1 decarbonization headwinds

This provides an additional, downloadable view of the underlying peak demand assumptions.

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