# Southwest Power Pool Seasonal Overrides API

**Canonical:** https://apis.io/apis/spp/spp-seasonal-overrides-api/  
**Provider:** Southwest Power Pool — https://apis.io/providers/spp/  
**Base URL:** ftp://pubftp.spp.org  
**Documentation:** https://spp.org/documents/28853/spp%20public%20data%20access%2020230707.pdf

Southwest Power Pool Seasonal Overrides API is one of 11 APIs that [Southwest Power Pool](https://apis.io/providers/spp/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Seasonal Overrides. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

A Seasonal Override instructs the system to use a temporary static rating instead of any concurrent Seasonal Rating for a resource. A typical use case is a so-called 'de-rate' due to a temporary clearance issue for a transmission facility that is exempt from providing AARs. Exempt facilities typically operate at a seasonal rating. However, instead of updating the seasonal rating schedule, a Ratings Provider can send a Seasonal Override. During the override period, the Clearinghouse uses the Seasonal Override rating instead of any scheduled seasonal ratings. For resources required to provide AARs, a Ratings Provider would issue a Temporary AAR Exception to address temporary conditions requiring a static rating.

## Operations (5)

| Method | Path | Summary |
|---|---|---|
| GET | `/seasonal-overrides` | Get Seasonal Overrides |
| POST | `/seasonal-overrides` | Create a new seasonal override |
| GET | `/seasonal-overrides/{id}` | Obtain a specific temporary seasonal rating by Id. |
| DELETE | `/seasonal-overrides/{id}` | Delete a specific seasonal override by its Id. |
| PUT | `/seasonal-overrides/{id}` | Updates an existing Seasonal override |

## Machine-readable artifacts (3)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/spp/refs/heads/main/openapi/spp-seasonal-overrides-api-openapi.yml
- **Documentation** — https://www.spp.org/documents/72496/spp%20lep%20api%20data%20exchange%20guide.pdf
- **Specification** — https://trolie.energy/spec

## Other Southwest Power Pool APIs (10)

- [SPP Public Data FTP](https://apis.io/apis/spp/spp-public-data-ftp/)
- [SPP Portal Public Data File Browser API](https://apis.io/apis/spp/spp-portal-file-browser-api/)
- [SPP Portal Chart API](https://apis.io/apis/spp/spp-portal-chart-api/)
- [SPP Price Contour Map ArcGIS REST Services](https://apis.io/apis/spp/spp-price-contour-map-arcgis/)
- [SPP Integrated Marketplace Markets Web Service](https://apis.io/apis/spp/spp-integrated-marketplace-web-services/)
- [Southwest Power Pool Forecasting API](https://apis.io/apis/spp/spp-forecasting-api/)
- [Southwest Power Pool Monitoring Sets API](https://apis.io/apis/spp/spp-monitoring-sets-api/)
- [Southwest Power Pool Real Time API](https://apis.io/apis/spp/spp-real-time-api/)
- [Southwest Power Pool Seasonal API](https://apis.io/apis/spp/spp-seasonal-api/)
- [Southwest Power Pool Temporary AAR Exceptions API](https://apis.io/apis/spp/spp-temporary-aar-exceptions-api/)

## Tags

Seasonal Overrides

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/spp/spp-seasonal-overrides-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/spp/.