PJM Grid Data API — Demand, Fuel Mix & Prices

Live now: PJM system demand and the full generation fuel mix are available over the API today. Locational prices (LMP) are rolling out — create a free key and they switch on for you the moment they land, no migration.

01 / Quickstart

bash — two requests to live data

# 1 — get a free API key
$ curl -X POST https://vatio.dev/v1/auth/signup \
    -H "Content-Type: application/json" \
    -d '{"email":"[email protected]","password":"·····"}'

# 2 — pull PJM's live generation fuel mix — same shape across every grid
$ curl https://vatio.dev/v1/pjm/generation/realtime \
    -H "X-API-Key: vt_live_…"

PJM over one API

PJM Interconnection runs real-time locational marginal pricing across 13 mid-Atlantic and Midwest states plus Washington, D.C. and is the largest wholesale power market in the United States by load, with demand around 150,000–165,000 MW at peak. It settles across dozens of pricing zones and aggregate hubs.

What you can pull

Demand — system demand (load) in MW. Live.
Generation fuel mix — MW by source (gas, nuclear, coal, hydro, wind, solar). Live.
Prices (LMP) — locational marginal prices (LMP) in $/MWh. Rolling out.

Availability

Demand and the full fuel mix are live across every US grid today; locational prices for PJM are rolling out. Create a free key now — same endpoints, same JSON, just a different path segment. See the live CAISO price API for the exact shape.

· Related endpoints

Start in two requests

Free key, no card. Live data and history on the paid tiers — upgrade when you ship.

Get a free key →View pricing