NYISO Grid Data API — Demand, Fuel Mix & Prices

Available now: NYISO system demand and the full generation fuel mix over the API, updated hourly from the U.S. EIA-930 feed, plus real-time five-minute NYISO prices (LMP).

· Quickstart

bash

# 1 — try it right now, no account needed
$ curl https://vatio.dev/v1/sample

# 2 — with a free key from the dashboard: pull NYISO's generation fuel mix — same shape across every grid
$ curl https://vatio.dev/v1/nyiso/generation/realtime \
    -H "X-API-Key: vt_live_…"

NYISO over one API

New York ISO runs five-minute real-time market across New York State and is split into 11 zones from upstate to New York City, with demand around 30,000–32,000 MW at summer peak. It settles across eleven zones labelled A through K.

What you can pull

Demand — system demand (load) in MW. Hourly (EIA-930).
Generation fuel mix — MW by source (gas, nuclear, coal, hydro, wind, solar, battery). Hourly (EIA-930).
Prices (LMP) — real-time locational marginal prices in $/MWh, five-minute. Live.

Availability & cadence

Demand and the full fuel mix are available for every US grid, updated hourly from the U.S. EIA-930 feed (which publishes with a few hours' lag). Real-time five-minute NYISO prices come from the operator's own feed. Same endpoints, same JSON, just a different path segment — see the CAISO price API for the exact price shape.

· Related endpoints

Start in two requests

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