Query real-time and day-ahead LMP, load, and generation fuel mix data from ISO-NE's Web Services API

domain: webservices.iso-ne.com · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗

Steps

  1. Apply for an ISO Express account at iso-ne.com and request Web Services access; your ISO Express credentials double as HTTP Basic Auth credentials (no separate API key).
  2. Base requests on https://webservices.iso-ne.com/api/v1.1/{endpoint}, sending Basic Auth over HTTPS.
  3. Choose JSON or XML by appending .json/.xml to the endpoint or via an Accept header.
  4. Query hourly/five-minute LMP via HourlyLmp/FiveMinLmp elements, load via HourlySystemLoad, and generation fuel mix via GenFuelMix.
  5. Consult the full parameter reference spreadsheet since the HTML docs alone don't cover every query field.

Known gotchas

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