---
title: "Constraints Thermal Costs"
method: GET
path: "/gb/national-grid/constraints/thermal-costs"
tags: ["NESO"]
---

# Constraints Thermal Costs

`GET /gb/national-grid/constraints/thermal-costs`

Thermal constraints are taken when the amount of energy that would flow naturally from one region to another exceeds the capacity of the circuits connecting the two regions. This dataset provides outturn system costs for thermal constraints across a number of significant constraint boundaries.

## Query parameters

- `settlement_date_from` string, date, required
- `settlement_date_to` string, date, required
- `constraint_group` string
- `limit` integer
- `offset` integer

## Response `200`

Success

- object
  - `count` integer, required
  - `next` string, uri, nullable
  - `previous` string, uri, nullable
  - `results` ThermalConstraintCostsData[], required
    - `settlementDate` string, date, required
    - `constraintGroup` string, required
    - `dailyCost` integer, required

## 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)