U.S. Grid — ISO Price History — Western EIM (WEIM)

https://grid.ptsolutions.io

● healthy general

Historical LMP price data for Western EIM (WEIM) with per-interval average, min, and max over rolling windows up to 7 days. 5-minute resolution, 30-day retention. Pass ?hours=N to control window. L402 Lightning payment, 100 sats per request. -- reliability 28.0/100 per Paygent Discover

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -X POST https://grid.ptsolutions.io

/.well-known/x402.json

https://grid.ptsolutions.io/.well-known/x402