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ISONE ISO-NE Monthly LMP Index

ISO-NE monthly on-peak, off-peak and average day-ahead and real-time LMP for each location.

Published by ISO-NE Web Services (opens in a new tab)Cadence: ISO-NE source publicationPricesISO-NE market
Open in Data (opens in a new tab)

About this data

Each record summarizes a month of ISO-NE prices at one location, giving on-peak, off-peak and average values for both day-ahead and real-time LMP. It is a ready-made monthly view for comparing locations and market runs without aggregating the underlying intervals.

What people use it for

  • Compare monthly average prices across locations
  • Contrast on-peak and off-peak price levels
  • Compare day-ahead and real-time monthly averages

TermsLocational marginal pricing (LMP)Day-ahead vs. real-time markets

Where to use it

In Ask the Grid

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Follow the live ISO-NE market in Ask the Grid: prices, load, generation and the grid map.

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In ATG Data

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Schema, full history, coverage and query rules live in Data, where you can browse every row, run SQL and connect it to your own code.

Plans and access

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Questions

Which data provider has ISONE ISO-NE Monthly LMP Index data?
Ask the Grid has it, from ISO-NE Web Services. You can browse every row in Ask the Grid Data or query it with SQL or the Ask the Grid API.
Where does ISONE ISO-NE Monthly LMP Index come from?
It comes from ISO-NE Web Services. This page links to the original publication, so any value can be checked against it.
How do I download or query ISONE ISO-NE Monthly LMP Index?
Open the iso_ne.monthly_lmp_index table in Ask the Grid Data to browse every row and run SQL against it, or call it from code through the Ask the Grid API. Full history can be delivered on a schedule to Snowflake, Databricks or your own storage.