---
title: "2 to 156 Weeks Ahead Generation availability aggregated by Balancing Mechanism Units"
method: GET
path: "/gb/elexon/forecasts/uou2t3yw"
tags: ["Elexon"]
---

# 2 to 156 Weeks Ahead Generation availability aggregated by Balancing Mechanism Units

`GET /gb/elexon/forecasts/uou2t3yw`

This endpoint forward view of availability (also referred to as Output Usable data under the Grid Code) for generation and interconnector capacity, accounting for planned outages covering availability data from 2 weeks ahead to 156 weeks ahead; it is aggregated by Balancing Mechanism Units (BMUs).  In the context of this report, BMUs can be considered as generating units. Elexon BMUs differs from NGC BMUs by including a prefix e.g. 'T_'. The mapping between NGC and Elexon BMUs can be retrieved via reference data API endpoints.

## Query parameters

- `publish_date_from` string, date-time, required
- `publish_date_to` string, date-time, required
- `limit` integer
- `offset` integer
- `timezone` 'UTC' | 'Europe/Berlin' | 'Europe/London' | 'America/New_York' | 'America/Chicago' | 'America/Los_Angeles'

## Response `200`

Success

- object
  - `count` integer, required
  - `next` string, uri, nullable
  - `previous` string, uri, nullable
  - `results` ElexonUOU2T3YW[], required
    - `dataset` string
    - `fuelType` string
    - `nationalGridBmUnit` string
    - `bmUnit` string
    - `publishTime` string, date-time
    - `week` integer
    - `year` integer
    - `outputUsable` integer

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found
- `429` — Too Many Requests

---

[API](https://skmtc.net/modoenergy/apis/modo-energy-api.md) · [All operations](https://skmtc.net/modoenergy/apis/modo-energy-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/modoenergy/modo-energy-api/revisions/6c4b83d3fc12/schema)