Per-state solar capture rate (peak vs off-peak)Daily per-state solar capture rate vs the flat-price benchmark.

Overview

Capture rate measures the price a state's solar fleet realises in the market vs the day's flat benchmark price. Peak / off-peak / super-peak buckets are reported separately so analysts can see when curtailment risk crystallises.

Endpoint

GET /api/v1/states/<code>/solar-capture-rate?days=30

Sample response

{
  "state_code": "RJ",
  "points": [
    {
      "ist_date": "2026-05-26",
      "capture_rate": 0.91,
      "peak_capture_rate": 0.62,
      "off_peak_capture_rate": 1.04
    }
  ]
}

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Citation lineage

• IEX day-ahead-market clearance
• POSOCO state solar generation telemetry