Power plant · Barnet, England, United Kingdom
Mill Hill National Grid Substation
Mill Hill National Grid Substation is a permitted power plant in Barnet, England, United Kingdom, with 49.9 MW of capacity, operated by Harbour Energy.
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 | Barnet (coordinates), England | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Address | National Grid Mill Hill Substa, Partingdale Lane, Barnet, NW7 1NT | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Status | Permitted (appeal granted) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Permit date | 13 Mar 2023 (permit 20/4241/FUL, Town and Country Planning Act, issued by Barnet) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Application date | 16 Sept 2020 (reference 20/4241/FUL, planning authority Barnet) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Decision date | 13 Mar 2023 (appeal granted, reference 20/4241/FUL, planning authority Barnet) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Decision date | 7 Apr 2022 (refused, reference 20/4241/FUL, planning authority Barnet) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Decision date | 13 Mar 2023 (granted, reference 20/4241/FUL, planning authority Barnet) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Operator | Harbour Energy (applicant) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Capacity | 49.9 MW | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Technology | Battery (stand-alone storage) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Coordinates | 51.6180, -0.2082 | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
Research on this power plant and its operator.Who owns it up to the parent company, its grid connection and planning status, and an introduction to the operator.
Request researchLatest events
Dated events about this power plant from official notices and registers, newest first. All recent changes.
- Permit granted (planning authority Barnet, reference 20/4241/FUL)
- Permit granted (appeal granted, planning authority Barnet, reference 20/4241/FUL)
- Permit refused (planning authority Barnet, reference 20/4241/FUL)
- Permit applied for (planning authority Barnet, reference 20/4241/FUL)
How it compares
Mill Hill National Grid Substation is the 455th-largest of 1,651 power plants planned, permitted or under construction in England and the 801st-largest of 2,549 in the United Kingdom by capacity; its 49.9 MW is <0.1% of the 279,978 MW of power plants planned, permitted or under construction we hold for the United Kingdom. It is not built yet, so it is ranked among the power plants planned, permitted or under construction in our data, apart from the ones running today. Ranks and totals cover the ones that report their capacity.
| Within | Rank | Total | Share |
|---|---|---|---|
| England | 455th of 1,651 | 172,174 MW | <0.1% |
| United Kingdom | 801st of 2,549 | 279,978 MW | <0.1% |
| All power plants planned, permitted or under construction in our data | 1,881st of 5,782 | 643,557 MW | <0.1% |
Nearby
Within 50 km of this power plant: 144 data centers (1 operating, 88 MW), 108 substations, 40 grid connections (23 operating, 264 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 |
|---|---|---|---|---|
| Soverign Data Centre - Metro Point | Data center | — | — | 5.5 km |
| Pure DC London Brent Cross | Data center | — | — | 5.6 km |
| LDeX 1 | Data center | — | — | 5.8 km |
| Willesden GSP | Substation | — | — | 9.8 km |
| Acton Lane BSP | Substation | — | — | 10.0 km |
| Canal Bank 11kV Primary | Substation | — | — | 10.0 km |
| North London (Electricity Line) Reinforcement | Transmission line | — | Permitted | 11 km |
| Ariel Way White City London grid connection | Grid connection | 2.2 MW | Operating | 12 km |
| Tertiary Study grid connection | Grid connection | 57 MW | Planned | 14 km |
Operator and place
More from Harbour Energy
- National Grid Minety Substation49.9 MW
- National Grid Axminster Substation49.9 MW · planned
Other power plants in England
- Walpole Flexible Generation Project2,000 MW
- Hornsea 2 - Optimus and Breesea1,320 MW
- Hornsea 1 - Heron & Njord1,218 MW
- Atlantic Array One - Bristol Channel Zone1,200 MW
- Five Estuaries - Wind Farm1,080 MW
- Rugeley Power Plant Conversion1,000 MW
- Teesworks Battery Storage Project1,000 MW
- Navitus Bay Wind Park970 MW
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.
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.
- © OpenStreetMap contributors. OpenStreetMap data centers, ODbL 1.0.
- Contains public sector information licensed under the Open Government Licence v3.0. Planning Inspectorate: National Infrastructure Projects, Open Government Licence v3.0.
- RVO SDE(+)(+) projecten in beheer and SDE viewer. RVO SDE(+)(+) projecten in beheer and SDE viewer, Free reuse, no attribution required.
- SSEN Distribution. SSEN Distribution data portal, CC BY 4.0.