MISO · Example Payload

Miso Public Api Markets Displays Getmarketpricinggetancillaryservicesmcp

EnergyUnited StatesElectricityEnergy MarketsGridSystem OperatorMarket OperatorWholesale PowerOpen Energy DataRenewablesSolarDemand ResponseUtilities

Miso Public Api Markets Displays Getmarketpricinggetancillaryservicesmcp is an example object payload from MISO, with 1 top-level field. It illustrates the shape of data this provider's APIs accept or return.

Top-level fields

MCPData

Example Payload

Raw ↑ 
{
  "MCPData": {
    "RefId": "27-Jul-2026 - Interval 08:15 EST",
    "MktDay": "07-27-2026",
    "RealTimeMCP": {
      "HourAndMin": "08:15",
      "Zone": [
        {
          "number": "1",
          "GenRegMCP": "9.34",
          "GenSpinMCP": "0.16",
          "GenSuppMCP": "0.16",
          "StrMcp": "0.10",
          "DemandRegMcp": "9.34",
          "DemandSpinMcp": "0.16",
          "DemandSuppMcp": "0.16",
          "RcpUpMcp": "0.00",
          "RcpDownMcp": "0.00"
        },
        {
          "number": "2",
          "GenRegMCP": "9.34",
          "GenSpinMCP": "0.16",
          "GenSuppMCP": "0.16",
          "StrMcp": "0.10",
          "DemandRegMcp": "9.34",
          "DemandSpinMcp": "0.16",
          "DemandSuppMcp": "0.16",
          "RcpUpMcp": "0.00",
          "RcpDownMcp": "0.00"
        }
      ]
    },
    "DayAheadMCP": {
      "HourEnding": "9",
      "Zone": [
        {
          "number": "1",
          "GenRegMCP": "11.91",
          "GenSpinMCP": "0.84",
          "GenSuppMCP": "0.40",
          "StrMcp": "0.85",
          "DemandRegMcp": "11.91",
          "DemandSpinMcp": "0.84",
          "DemandSuppMcp": "0.40",
          "RcpUpMcp": "0.00",
          "RcpDownMcp": "0.00"
        },
        {
          "number": "2",
          "GenRegMCP": "11.91",
          "GenSpinMCP": "0.84",
          "GenSuppMCP": "0.40",
          "StrMcp": "0.85",
          "DemandRegMcp": "11.91",
          "DemandSpinMcp": "0.84",
          "DemandSuppMcp": "0.40",
          "RcpUpMcp": "0.00",
          "RcpDownMcp": "0.00"
        }
      ]
    }
  }
}