Substation · England, United Kingdom
East Harpenden Primary 11kV Substation
East Harpenden Primary 11kV Substation is an 11 kV primary substation in England, United Kingdom, with 7.9 MVA of demand headroom and 2 MVA of generation headroom, operated by Eastern Power Networks plc (UK Power Networks, East England licence area).
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | England | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
| Grid operator | Eastern Power Networks plc (UK Power Networks, East England licence area) | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
| Demand headroom | 7.9 MVA | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
| Generation headroom | 2 MVA | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
| Firm capacity | 17.1 MVA | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
| Level | Primary substation | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
| Voltage | 11 kV | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
| Coordinates | 51.8190, -0.3350 | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
Research on this substation and the land around it.Its headroom, connection queue and congestion, who owns the land around it, and an introduction to those owners.
Nearby
Within 50 km of this substation: 421 power plants (150 operating, 3,661 MW), 338 grid connections (225 operating, 2,137 MW), 127 data centers (1 operating, 88 MW), 1 transmission line and 1 AI supercomputer, measured from the coordinates in the facts above. The table shows the nearest 9, up to 3 per kind.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Land Around Chiltern Green And West Hyde Road grid connection | Grid connection | 23 MW | Planned | 4.1 km |
| Lawrence End Park grid connection | Grid connection | 10 MW | Operating | 4.7 km |
| Land North of Chiltern Greeen | Power plant | 5 MW | Operating | 4.9 km |
| Chiltern Green Road | Power plant | 10 MW | Cancelled | 5.0 km |
| BT Computer Centre | Data center | — | — | 5.5 km |
| Flamsteadbury Farm | Power plant | 4.5 MW | Cancelled | 6.2 km |
| Booker Cash & Carry grid connection | Grid connection | 5.5 MW | Operating | 7.8 km |
| NTT Hemel Hempstead 3 | Data center | — | — | 9.4 km |
| NTT Hemel Hempstead 4 | Data center | — | — | 9.4 km |
Grid operator and place
More from Eastern Power Networks plc
- Canvey Primary 11kVsubstation
- Thorley Primary 11kVsubstation
- Peterborough South Grid 11kVsubstation
- Westbury Primary 11kVsubstation
- Laxfield Primary 11kVsubstation
- Fulbourn Grid 33kVsubstation
- Earlham Grid 33kVsubstation
- Hunstanton Primary 11kVsubstation
Other substations in England
Data on this page
- Contains public sector information licensed under the Open Government Licence v3.0. DESNZ Renewable Energy Planning Database (REPD), Open Government Licence v3.0.
- © OpenStreetMap contributors. OpenStreetMap data centers, ODbL 1.0.
- UK Power Networks. UK Power Networks open data portal, CC BY 4.0.