Hourly per-state interchange attributionHourly attribution of state imports/exports to ISTS corridors and counterparties.

Overview

Each state's net interchange at every hour is decomposed into the ISTS counterparties it flowed with — useful for understanding which states power a load pocket during peak shortages, or where surplus solar exports landed off-peak.

Endpoint

GET /api/intelligence/state-interchange-attribution?state=<slug>

Sample response

{
  "hour_utc": "2026-05-26T08:00:00+00:00",
  "attributions": [
    {
      "counterparty": "northern_grid",
      "flow_mw": 1450
    },
    {
      "counterparty": "ercot_isd",
      "flow_mw": -380
    }
  ]
}

Citation lineage

• POSOCO RLDC interchange logs
• NRLDC counterparty scheduling