---
title: "Evolution daily surplus forecast (OCNMFD)"
method: GET
path: "/forecast/surplus/daily/evolution"
tags: ["Surplus Forecast"]
---

# Evolution daily surplus forecast (OCNMFD)

`GET /forecast/surplus/daily/evolution`

This endpoint provides the daily evolution Generating Plant Operating Surplus covering 2 days ahead to 14 days ahead in MW values.
The Daily API outputs the latest published data for daily surplus forecast for D+2 to D+14.
            
Date parameter must be provided in the exact format yyyy-MM-dd.

## Query parameters

- `forecastDate` string, date, required
- `format` 'json' | 'xml' | 'csv'

## Response `200`

OK

- InsightsApiModelsResponsesResponseWithMetadata1InsightsApiModelsResponsesForecastSurplusForecastSurplusDaily
  - `data` InsightsApiModelsResponsesForecastSurplusForecastSurplusDaily[], nullable
    - `publishTime` string, date-time
    - `surplus` integer, nullable
    - `forecastDate` string, date
  - `metadata` InsightsApiModelsMetadataApiResponseSourceMetadata
    - `datasets` string[], nullable

---

[API](https://skmtc.net/elexon/apis/bmrs-insights.md) · [All operations](https://skmtc.net/elexon/apis/bmrs-insights/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/elexon/bmrs-insights/revisions/d94e9edb295e/schema)