# NESO Data Portal API

**Canonical:** https://apis.io/apis/national-grid/neso-data-portal-api/  
**Provider:** National Grid ESO — https://apis.io/providers/national-grid/  
**Base URL:** https://api.neso.energy/api/3/action  
**Documentation:** https://www.neso.energy/data-portal

NESO Data Portal API is one of 2 APIs that [National Grid ESO](https://apis.io/providers/national-grid/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Energy Data, Open Data, Demand Forecasting, Generation, and Ancillary Services. The published artifact set on APIs.io includes API documentation and rate-limit docs.

CKAN-based REST API providing programmatic access to hundreds of electricity system datasets published by the National Energy System Operator. Covers ancillary services, balancing costs, carbon intensity, connection registers, constraint management, demand forecasts, generation data, network charges, trading data, Future Energy Scenarios, and more. Rate limited to one request per second for the catalog API and two requests per minute for the Datastore (tabular data) API.

## Machine-readable artifacts (5)

- **Documentation** — https://www.neso.energy/data-portal/api-guidance
- **ExternalDocumentation** — https://docs.ckan.org/en/2.8/api/
- **Portal** — https://www.neso.energy/data-portal
- **RateLimits** — https://raw.githubusercontent.com/api-evangelist/national-grid/refs/heads/main/rate-limits/neso-data-portal-rate-limits.yml
- **Plans** — https://raw.githubusercontent.com/api-evangelist/national-grid/refs/heads/main/plans/neso-data-portal-plans.yml

## Other National Grid ESO APIs (1)

- [Carbon Intensity API](https://apis.io/apis/national-grid/carbon-intensity-api/)

## Tags

Energy Data, Open Data, Demand Forecasting, Generation, Ancillary Services, Balancing Costs, Carbon Intensity, CKAN

---

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