# SSEN NeRDA (Near Real-time Data Access) API

**Canonical:** https://apis.io/apis/ssen/ssen-nerda-api/  
**Provider:** Scottish and Southern Electricity Networks — https://apis.io/providers/ssen/  
**Base URL:** https://nerda.opengrid.com/api  
**Documentation:** https://www.ssen.co.uk/our-services/tools-and-maps/near-real-time-data-access-nerda-portal/

SSEN NeRDA (Near Real-time Data Access) API is one of 4 APIs that [Scottish and Southern Electricity Networks](https://apis.io/providers/ssen/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Real-Time, Grid, Power Flow, Substations, and Flexibility. The published artifact set on APIs.io includes API documentation and an API reference.

Near real-time power flow data from SSEN Distribution's EHV, HV and LV networks, drawn from SCADA PowerOn, LV monitoring equipment, the load model forecasting tool, the connectivity model and the Long Term Development Statement. The documented endpoints are a static substation endpoint per licence area (nerdastatic-SEPD, nerdastatic-SHEPD) and time-series endpoints (nerdart_after, nerdart_between) queried by nerda_measurement_id and ISO 8601 timestamps. Access requires a free SSEN account, acceptance of the portal terms and conditions, and an API key generated in the portal API console; anonymous calls to the documented endpoints return 404.

## Machine-readable artifacts (4)

- **Documentation** — https://www.ssen.co.uk/our-services/tools-and-maps/near-real-time-data-access-nerda-portal/
- **APIReference** — https://data-api.ssen.co.uk/dataset/195500da-46ae-4698-939c-f7f4293f7b43/resource/c90db7e1-c666-4092-998c-b71d782b16db/download/nerda-api-guide.pdf
- **Documentation** — https://data.ssen.co.uk/@ssen-distribution/nerda_opengrid_dashboard
- **Portal** — https://nerda.ssen.co.uk/

## Other Scottish and Southern Electricity Networks APIs (3)

- [SSEN Distribution Data Portal API](https://apis.io/apis/ssen/ssen-distribution-data-portal-api/)
- [SSEN Power Track Real Time Outage API](https://apis.io/apis/ssen/ssen-power-track-real-time-outage-api/)
- [SSEN Transmission Open Data Explore API](https://apis.io/apis/ssen/ssen-transmission-open-data-explore-api/)

## Tags

Real-Time, Grid, Power Flow, Substations, Flexibility

---

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