Grid connection · England, United Kingdom
Harefield Solar grid connection
Harefield Solar grid connection is a planned grid connection in England, United Kingdom, with 30 MW of capacity, held by Esmart Networks Limited.
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 |
|---|---|---|
| Name in the source | HAREFIELD SOLAR grid connection | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Location | England (connects at Denham Avenue) | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Status | Planned (accepted to connect) | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Holder | Esmart Networks Limited | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Attached to | Denham Avenue Primary (via a primary substation) | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Capacity | 30 MW | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Technology | Solar | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Grid operator | Southern Electric Power Distribution plc | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Queue date | 24 Oct 2022 | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Connection date | 31 Oct 2038 (target energisation) | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Voltage | 22 kV | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Coordinates | 51.5897, -0.4800 | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
Know more about this grid connection, or want an introduction to its holder? Ask us.
How it compares
Harefield Solar grid connection is the 857th-largest of 2,533 grid connections in England and the 1,333rd-largest of 3,903 in the United Kingdom by capacity; its 30 MW is <0.1% of the 446,745 MW we hold for the United Kingdom. Ranks and totals cover the grid connections in our data that report their capacity, not every one in existence.
| Within | Rank | Total | Share |
|---|---|---|---|
| England | 857th of 2,533 | 319,370 MW | <0.1% |
| United Kingdom | 1,333rd of 3,903 | 446,745 MW | <0.1% |
| All grid connections in our data | 4,564th of 7,616 | 1,281,251 MW | <0.1% |
Timeline
Dated facts about this grid connection from its sources, oldest first.
- Entered the connection queue
- Due to connect
Nearby
Within 50 km of this grid connection: 361 power plants (113 operating, 979 MW), 169 substations, 155 data centers (1 operating, 88 MW) and 1 transmission line, measured from the coordinates in the facts above. The table shows the nearest 9, up to 3 per kind.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Harefield Primary | Substation | — | — | 2.7 km |
| Denham Avenue Primary | Substation | — | — | 2.9 km |
| Gerrards Cross Sewage Treatment Works | Power plant | 20 MW | Planned | 3.5 km |
| Pinstone Farm, Oxford Road - Battery Energy Storage System | Power plant | 60 MW | Planned | 3.8 km |
| David Lloyd Leisure, Ducks Hill Road - Solar Panels | Power plant | 1 MW | Cancelled | 3.8 km |
| Denham BSP | Substation | — | — | 3.8 km |
| The Chess Building | Data center | — | — | 6.9 km |
| SDC M40 Campus | Data center | — | Planned | 7.9 km |
| Virtus London7 | Data center | — | — | 8.9 km |
Holder, grid operator and place
Other grid connections in England
- Bute Hydrogen Project 1 grid connection4,800 MW
- Drax BECCS grid connection3,906 MW
- Drax Power Station grid connection3,906 MW
- Bute Hydrogen Project 2 grid connection3,600 MW
- Bute Hydrogen Project 3 grid connection3,600 MW
- Bute Hydrogen Project 5 grid connection3,600 MW
- Bute Hydrogen Project 6 grid connection3,600 MW
- Hinkley Point C grid connection3,340 MW
Data on this page
- California ISO. Checked 2026-10-24. CAISO queue report, CAISO Privacy and Terms of Use.
- DESNZ Renewable Energy Planning Database (REPD). DESNZ Renewable Energy Planning Database (REPD), Open Government Licence v3.0.
- SP Electricity North West, via Northern Powergrid Open Data. SP Electricity North West open data portal, CC BY 4.0.
- ERCOT GIS report. ERCOT GIS report, ERCOT Terms of Use.
- Supported by National Energy SO Open Data. NESO TEC Register, NESO Open Data Licence v1.0.
- Supported by Northern Powergrid Open Data. Northern Powergrid open data portal, Northern Powergrid Open Data Licence v1.0.
- NYISO interconnection queue. NYISO interconnection queue, Free reuse.
- © OpenStreetMap contributors. OpenStreetMap data centers, ODbL 1.0.
- Planning Inspectorate: National Infrastructure Projects. Planning Inspectorate: National Infrastructure Projects, Open Government Licence v3.0.
- PJM New Services Queue. PJM New Services Queue, Free reuse.
- SP Energy Networks, via Northern Powergrid Open Data. SP Energy Networks open data portal, CC BY 4.0.
- SSEN Distribution. SSEN Distribution data portal, CC BY 4.0.