---
title: "Evolution of the three-year generation capacity forecast over time (FOU2T3YW)"
method: GET
path: "/forecast/availability/weekly/evolution"
tags: ["Generation Forecast"]
---

# Evolution of the three-year generation capacity forecast over time (FOU2T3YW)

`GET /forecast/availability/weekly/evolution`

This endpoint provides all weekly generation forecasts over time for a given Year and Week

## Query parameters

- `year` integer, required
- `week` integer, required
- `level` 'total' | 'fuelType' | 'bmUnit'
- `bmUnit` string[]
- `fuelType` string[]
- `format` 'json' | 'xml' | 'csv'

## Response `200`

OK

- InsightsApiModelsResponsesResponseWithMetadata1InsightsApiModelsResponsesGenerationAvailabilityWeekly
  - `data` InsightsApiModelsResponsesGenerationAvailabilityWeekly[], nullable
    - `dataset` string, nullable
    - `publishTime` string, date-time, nullable
    - `fuelType` string, nullable
    - `ngcBmUnit` string, nullable
    - `bmUnit` string, nullable
    - `outputUsable` integer, nullable
    - `year` integer
    - `calendarWeekNumber` integer
  - `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/versions/d94e9edb295e/schema)