MISO Grid Data API — Demand, Fuel Mix & Prices

Available now: MISO system demand and the full generation fuel mix over the API, updated hourly from the U.S. EIA-930 feed. Locational prices (LMP) are rolling out — create a free key and they switch on for you the moment they land, no migration.

· 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 MISO's generation fuel mix — same shape across every grid
$ curl https://vatio.dev/v1/miso/generation/realtime \
    -H "X-API-Key: vt_live_…"

MISO over one API

Midcontinent ISO runs real-time energy and operating-reserve market across 15 central US states and the province of Manitoba and is a wind-rich grid spanning the nation's midsection, with demand around 120,000–127,000 MW at summer peak. It settles across multiple load and generation hubs across its footprint.

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) — locational marginal prices (LMP) in $/MWh. Rolling out.

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). Locational prices for MISO are rolling out. 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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