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MISO Offer API

The Offer API from MISO — 7 operation(s) for offer.

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

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

This API exposes 12 operations across 7 paths, and defines 148 schemas. It is described by OpenAPI 3.2.0, at version 3.3.0.

Requests are made against 2 base URLs: https://cce.midwestiso.org/dart2/, https://markets.midwestiso.org/dart2/.

12 operations 7 paths 148 schemas 7 GET5 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
3.3.0
Base URL
https://public-api.misoenergy.org
License
For use by MISO member companies and thier vendors
Resource Areas
1

Paths & Operations 12

Across 7 paths, the API surfaces 12 operations — 7 GET, 5 POST. Each is listed below with its method, path, parameters, and response codes.

Offer 12
GET
/markets/real-time/{day}/offer/ramp-curves/participants/{participantName}
Get offer ramp rate curves
getOfferRampRateCurves 6 params → 200400403404500
POST
/markets/real-time/{day}/offer/ramp-curves/participants/{participantName}
Post offer ramp rate curves
postOfferRampRateCurves 3 params body → 200400403404500
GET
/markets/common/{day}/offer/cc-status/participants/{participantName}
Get combined cycle resource day
getCombinedCycleResourceDay 5 params → 200400403404500
POST
/markets/common/{day}/offer/cc-status/participants/{participantName}
Post combined cycle resource day
postCombinedCycleResourceDay 3 params body → 200400403404500
GET
/markets/{market}/{day}/offer/auto-overrides/participants/{participantName}
Get schedule offer overrides
getScheduleOfferOverrides 6 params → 200400403404500
GET
/markets/{market}/{day}/offer/qualification-status/participants/{participantName}
Get qualification status
getQualificationStatus 6 params → 200400403404500
GET
/markets/{market}/{day}/offer/schedule/participants/{participantName}
Get schedule offer
getScheduleOffer 7 params → 200400403404500
POST
/markets/{market}/{day}/offer/schedule/participants/{participantName}
Post schedule offer
postScheduleOffer 4 params body → 200400403404500
GET
/markets/{market}/{day}/offer/defaults/participants/{participantName}
Get default day
getDefaultDay 7 params → 200400403404500
POST
/markets/{market}/{day}/offer/defaults/participants/{participantName}
Post default day
postDefaultDay 4 params body → 200400403404500
GET
/markets/real-time/{day}/offer/overrides/participants/{participantName}
Get real time offer overrides
getRealTimeOfferOverrides 7 params → 200400403404500
POST
/markets/real-time/{day}/offer/overrides/participants/{participantName}
Post real time offer overrides
postRealTimeOfferOverrides 3 params body → 200400403404500

Schemas 148

The contract defines 148 schemas that model the data the API accepts and returns. The most detailed are ESRScheduleOfferItem (20 properties), GenScheduleOfferItem (18 properties), DRR2ScheduleOfferItem (18 properties), EARScheduleOfferItem (16 properties). Each schema is shown below with its type and property counts.

RetrievedDRR2RTOfferOverridesItem
object
2 properties 2 required
MarketTypeIncBoth
string
Energy Market types, includes support for both markets.
RealEnergyResultsNullable
numbernull
Used to represent real energy values in market outcomes. Historically simliar to 'MWType'.
EARRegDispatchStatus
string
EARRampDispatchStatusNullable
stringnull
MultiVariantScheduleDefault
object
Schedule Offer Defaults.
2 properties 2 required
DRR1ScheduleDefaultItem
object
5 properties 2 required
DRR1OnSuppDispatchStatusNullable
stringnull
ESRCommitStatusNullable
stringnull
EARCommitStatusNullable
stringnull
GenOnSuppDispatchStatusNullable
stringnull
DRR1OnSuppDispatchStatus
string
RegulationOfferOverrides
object
Regulation Offer Overrides.
2 properties 2 required
ESRRampRateCurveItem
object
2 properties 2 required
GenScheduleDefaultItem
object
6 properties 2 required
DownTimeNullable
stringnull
Type used to represent down time for the resource.
EAREnergyDispatchStatus
string
ESREnergyDispatchStatusNullable
stringnull
GenOffSuppDispatchStatusNullable
stringnull
DRR1CommitStatus
string
DRR2CommitStatusNullable
stringnull
RunTimeNullable
stringnull
Type used to represent run time for the resource.
RTOverrideText
stringnull
ESRSpinDispatchStatus
string
Percentage
number
Used to represent a percentage in the range of 0-100.
OfflineSTRDispatchStatus
string
NotificationTimeNullable
stringnull
Type used to represent time required for Cold Notification/Intermediate Notification/Hot Notification for the resource.
ParticipantName
string
Market participant name.
DRR1ScheduleOfferItem
object
12 properties 3 required
GenSpinDispatchStatus
string
MultiVariantScheduleOffer
object
Multi-variant Schedule Offer.
2 properties 2 required
Percentage4DPNullable
numbernull
Used to represent a percentage in the range of 0.0001-1.0000.
RetrievedEARRTOfferOverridesItem
object
2 properties 2 required
RealEnergySigned
number
Used to represent real energy values submitted to the market.
RealEnergyResultsSignedNullable
numbernull
Used to represent real energy values in market outcomes. Historically simliar to 'MWType'.
EARScheduleOfferItem
object
16 properties 3 required
SERRTOfferOverridesItem
object
2 properties 2 required
MarketPrice
number
General type for all market prices.
DRR2OnSuppDispatchStatus
string
EAREnergyDispatchStatusNullable
stringnull
DRR2EnergyDispatchStatusNullable
stringnull
GenRTOfferOverridesItem
object
2 properties 2 required
EARCommitStatus
string
DRR2EnergyDispatchStatus
string
MultiVariantRTOfferOverrides
object
Real Time Offer Override submission. Offer format will vary based on offerType variant.
2 properties 2 required
SERCommitStatus
string
RealEnergyNegative
number
Used to represent real energy values submitted to the market that must be less than or equal to zero.
MarketIntervalLabel
string
Date-time as defined in RFC 3339. 'YYYY-MM-DDTHH:MM:SS-05:00'. Effective Market interval of data.
DIRRTOfferOverridesItem
object
2 properties 2 required
GenEnergyDispatchStatus
string
SERScheduleDefaultItem
object
5 properties 2 required
MarketOperatingDay
string
Effective Market operating day of data. RFC 3339. 'YYYY-MM-DD'.
RTOverrideReason
string
Real Time Offer Overrides reason. RGDOverride is a query-only value.
GenRampDispatchStatusNullable
stringnull
ESROffSuppDispatchStatus
string
ESRRegDispatchStatus
string
PortfolioName
string
Portfolio name which is unique to a participant company and may be shared among users registered with the same company.
ESRRegDispatchStatusNullable
stringnull
MWRampRateNullable
numbernull
Used to represent a ramp rate which is measured in MW/Min.
EARRTOfferOverridesItem
object
2 properties 2 required
EARSpinDispatchStatus
string
ESRScheduleOfferItem
object
20 properties 3 required
ESRSpinDispatchStatusNullable
stringnull
DRR2RampDispatchStatusNullable
stringnull
ESRScheduleDefaultItem
object
7 properties 2 required
RealEnergyNegativeNullable
numbernull
Used to represent real energy values submitted to the market that must be less than or equal to zero. Nullable added to allow for data driven delete behaviour.
DRR2CommitStatus
string
MultiVariantRampRateCurves
object
Multi-variant Ramp Rate Curves.
2 properties 2 required
MaxRunTimeNullable
stringnull
Type used to represent run time for the resource.
ESRRTOfferOverridesItem
object
2 properties 2 required
StartupTimeNullable
stringnull
Type used to represent time required for Cold Startup/Intermediate Startup/Hot Startup for the resource.
DRR1RTOfferOverridesItem
object
2 properties 2 required
ESROnSuppDispatchStatus
string
RealEnergySignedNullable
numbernull
Used to represent real energy values submitted to the market. Nullable added to allow for data driven delete behaviour.
ScheduleType
string
Participant offer schedule types.
DIRScheduleOfferItem
object
11 properties 3 required
DRR2SpinDispatchStatus
string
DRR2OnSuppDispatchStatusNullable
stringnull
GenScheduleOfferItem
object
18 properties 3 required
SERRegDispatchStatus
string
SERRegDispatchStatusNullable
stringnull
ESRRampDispatchStatusNullable
stringnull
GenRampDispatchStatus
string
MarketPriceNullable
numbernull
General type for all market prices.
OpCostNullable
numbernull
Operational cost for resource such as startup, noload, or shutdown costs.
MarketType
string
Energy Market types.
OnlineSTRDispatchStatus
string
DRR2ScheduleOfferItem
object
18 properties 3 required
ESREnergyDispatchStatus
string
RetrievedDIRRTOfferOverridesItem
object
2 properties 2 required
GenCommitStatusNullable
stringnull
ESROffSuppDispatchStatusNullable
stringnull
DurationNullable
stringnull
Type used to represent time duration.
APIResponse
object
General container for API response.
4 properties
DRR2RegDispatchStatusNullable
stringnull
CheckHourLabel
integer
Hour ending label that can be provided to enable a validation on the current hour during submission. If specified then current hour must equal this value other…
DRR1SpinDispatchStatusNullable
stringnull
EARSpinDispatchStatusNullable
stringnull
EARRampDispatchStatus
string
ESRCommitStatus
string
EAROnSuppDispatchStatus
string
OfflineSTRDispatchStatusNullable
stringnull
GenRegDispatchStatus
string
GenOffSuppDispatchStatus
string
RetrievedSERRTOfferOverridesItem
object
2 properties 2 required
ESROnSuppDispatchStatusNullable
stringnull
GenOnSuppDispatchStatus
string
DRR2OffSuppDispatchStatusNullable
stringnull
SERScheduleOfferItem
object
9 properties 3 required
GenSpinDispatchStatusNullable
stringnull
DRR2ScheduleDefaultItem
object
7 properties 2 required
SERCommitStatusNullable
stringnull
GenEnergyDispatchStatusNullable
stringnull
DRR2RampDispatchStatus
string
EAROnSuppDispatchStatusNullable
stringnull
ESRMWRampRate
number
Used to represent a ramp rate which is measured in MW/Min and may only be 0.
DRR2OffSuppDispatchStatus
string
GenCommitStatus
string
RegulationOverrideReasons
array
Regulation Override Reasons.
MWRampRate
number
Used to represent a ramp rate which is measured in MW/Min and may only be = 0.
RetrievedDRR1RTOfferOverridesItem
object
2 properties 2 required
RetrievedMultiVariantRTOfferOverrides
object
Real Time Offer Overrides response. Offer format will vary based on offerType variant.
2 properties 2 required
DRR1SpinDispatchStatus
string
ESRRampDispatchStatus
string
RetrievedESRRTOfferOverridesItem
object
2 properties 2 required
RealEnergy
number
Used to represent real energy values submitted to the market.
DRR2RegDispatchStatus
string
HourLabel
integer
Hour ending label. Represents an hour segment of time.
PNodeName
string
Commercial Pricing Node (PNode) name.
Percentage4DP
number
Used to represent a percentage in the range of 0.0001-1.0000.
DRR2RTOfferOverridesItem
object
2 properties 2 required
DIRScheduleDefaultItem
object
6 properties 2 required
LocationType
string
Unit type of a Commercial Pricing Node (PNode).
DRR2SpinDispatchStatusNullable
stringnull
PercentageNullable
numbernull
Used to represent a percentage in the range of 0-100.
EARScheduleDefaultItem
object
6 properties 2 required
NotificationTime
string
Type used to represent time required for Cold Notification/Intermediate Notification/Hot Notification for the resource.
CCStatus
string
Combined Cycle status.
OnlineSTRDispatchStatusNullable
stringnull
QualificationStatus
object
Qualification status.
2 properties 2 required
RetrievedGenRTOfferOverridesItem
object
2 properties 2 required
DRR1CommitStatusNullable
stringnull
EARRegDispatchStatusNullable
stringnull
CombinedCycleStatus
object
Combined Cycle status.
2 properties 2 required
RealEnergyNullable
numbernull
Used to represent real energy values submitted to the market. Nullable added to allow for data driven delete behaviour.
RampRateCurveItem
object
2 properties 2 required
TransitionTimeNullable
stringnull
Type used to represent time required for transitioning from Hot To Cold state/Hot to Intermediate state for the resource.
GenRegDispatchStatusNullable
stringnull

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

miso-offer-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 Offer 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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