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MISO Day Ahead API

The Day Ahead API from MISO — 11 operation(s) for day ahead.

MISO Day Ahead API is one of 38 APIs that MISO publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Day Ahead. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 11 operations across 11 paths, and defines 18 schemas. It is described by OpenAPI 3.2.0, at version 1.0.

Requests are made against 2 base URLs: https://apim.misoenergy.org/lgi, https://apim.misoenergy.org/pricing.

11 operations 11 paths 18 schemas 11 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0
Base URL
https://public-api.misoenergy.org
Authentication
API Key, API Key
Resource Areas
1

Authentication & Security 2

MISO Day Ahead API declares 2 security schemes for authenticating requests. An API key is passed in the header as Ocp-Apim-Subscription-Key (apiKeyHeader). An API key is passed in the query as subscription-key (apiKeyQuery). By default, every request must be authenticated, though some operations may also be called without credentials.

Paths & Operations 11

Across 11 paths, the API surfaces 11 operations — 11 GET. Each is listed below with its method, path, parameters, and response codes.

Day Ahead 11
GET
/v1/day-ahead/{date}/demand
Day-Ahead Cleared Demand
get-v1-day-ahead-date-demand 5 params → 200400401404
GET
/v1/day-ahead/{date}/generation/cleared/physical
Day-Ahead Cleared Generation, Physical
get-v1-day-ahead-date-generation-cleared-physical 4 params → 200400401404
GET
/v1/day-ahead/{date}/generation/cleared/virtual
Day-Ahead Cleared Generation, Virtual
get-v1-day-ahead-date-generation-cleared-virtual 4 params → 200400401404
GET
/v1/day-ahead/{date}/generation/fuel-type
Day-Ahead Generation Fuel Type
get-v1-day-ahead-date-generation-fuel-type 4 params → 200400401404
GET
/v1/day-ahead/{date}/generation/offered/ecomax
Day-Ahead Offered Generation ECOMAX
get-v1-day-ahead-date-generation-offered-ecomax 4 params → 200400401404
GET
/v1/day-ahead/{date}/generation/offered/ecomin
Day-Ahead Offered Generation ECOMIN
get-v1-day-ahead-date-generation-offered-ecomin 4 params → 200400401404
GET
/v1/day-ahead/{date}/interchange/net-scheduled
Day-Ahead Net Scheduled Interchange
get-v1-day-ahead-date-interchange-net-scheduled 4 params → 200400401404
GET
/v1/day-ahead/{date}/asm-exante
Day-Ahead Ex-Ante MCP
get-v1-day-ahead-date-asm-exante 5 params → 200400401404
GET
/v1/day-ahead/{date}/asm-expost
Day-Ahead Ex-Post MCP
get-v1-day-ahead-date-asm-expost 5 params → 200400401404
GET
/v1/day-ahead/{date}/lmp-exante
Day-Ahead Ex-Ante LMP
get-v1-day-ahead-date-lmp-exante 4 params → 200400401404
GET
/v1/day-ahead/{date}/lmp-expost
Day-Ahead Ex-Post LMP
get-v1-day-ahead-date-lmp-expost 4 params → 200400401404

Schemas 18

The contract defines 18 schemas that model the data the API accepts and returns. The most detailed are FuelType (8 properties), LocationalMarginalPrice (7 properties), OfferedGeneration (5 properties), DayAheadDemand (5 properties). Each schema is shown below with its type and property counts.

200-OK-MCPResponse-json
object
2 properties
ClearedGeneration
object
3 properties
TimeInterval
object
4 properties
200-OK-Day-Ahead-Net-Scheduled-InterchangeResponse-json
object
2 properties
200-OK-Offered-GenerationResponse-json
object
2 properties
200-OK-Cleared-GenerationResponse-json
object
2 properties
OfferedGeneration
object
5 properties
200-OK-DayAhead-DemandResponse-json
object
2 properties
DayAheadNetScheduledInterchange
object
3 properties
LocationalMarginalPrice
object
7 properties
Region
string
GenerationFuelType
object
5 properties
DayAheadDemand
object
5 properties
MarketClearingPrice
object
5 properties
FuelType
object
8 properties
PageInfo
object
5 properties
200-OK-Generation-Fuel-TypeResponse-json
object
2 properties
200-OK-LMPResponse-json
object
2 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

miso-day-ahead-api-openapi.yml Raw ↑

Other APIs MISO publishes across the network.

MISO Market Reports
MISO File Download API
MISO FTR MPMA Market User API
MISO EDR Service (Electronic Data Reporting)
MISO CROW API (Outage Scheduling)
MISO Fuel and Consumables Data Request API
MISO Market Portal Meter Data and Settlement Statements API
MISO Ace API
MISO Admin API
MISO Aggregated Pnode API
MISO Bidding API
MISO Binding Constraints API
Where this information came from

This is an independent, third-party profile of MISO Day Ahead API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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