Power plant · Hertsmere, England, United Kingdom
Butterfly Lane, Elstree BESS - Battery Energy Storage System
Butterfly Lane, Elstree BESS - Battery Energy Storage System is a planned power plant in Hertsmere, England, United Kingdom, with 99.9 MW of capacity, operated by Greenfield Energy Developments 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 |
|---|---|---|
| Location | Hertsmere (coordinates), England | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Address | Opp Jnct With Butterfly Lane, E/O Watling Street, Radlett, WD7 7AB | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Status | Planned (appeal lodged) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Application date | 18 Jul 2025 (reference 25/1070/FUL, planning authority Hertsmere) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Operator | Greenfield Energy Developments Limited | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Capacity | 99.9 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 | 51.6844, -0.3145 | 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 applied for (planning authority Hertsmere, reference 25/1070/FUL)
How it compares
Butterfly Lane, Elstree BESS - Battery Energy Storage System is the 296th-largest of 2,174 power plants planned, permitted or under construction in England and the 501st-largest of 3,222 in the United Kingdom by capacity; its 99.9 MW is <0.1% of the 300,461 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 | 296th of 2,174 | 185,888 MW | <0.1% |
| United Kingdom | 501st of 3,222 | 300,461 MW | <0.1% |
| All power plants planned, permitted or under construction in our data | 1,415th of 6,455 | 664,040 MW | <0.1% |
Nearby
Within 50 km of this power plant: 144 data centers (1 operating, 88 MW), 113 substations, 43 grid connections (24 operating, 271 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 |
|---|---|---|---|---|
| The Chess Building | Data center | — | — | 9.1 km |
| BT Computer Centre | Data center | — | — | 9.5 km |
| NTT Hemel Hempstead 4 | Data center | — | — | 11 km |
| Harefield Primary | Substation | — | — | 15 km |
| Harefield Solar grid connection | Grid connection | 30 MW | Planned | 16 km |
| Greenford Primary | Substation | — | — | 16 km |
| Perivale Primary | Substation | — | — | 17 km |
| Land at Pinstone Farm grid connection | Grid connection | 60 MW | Planned | 19 km |
| Gerrards Cross Battery grid connection | Grid connection | 20 MW | Operating | 19 km |
Operator and place
More from Greenfield Energy Developments Limited
- Thornton Battery Storage400 MW · permitted
- Mulbarton Road, Keswick - Battery Energy Storage System400 MW · planned
- Forty Acre Wood, The Street - Battery Energy Storage System300 MW
- Buildwas - Battery Energy Storage100 MW · permitted
- Grendon Road, Earls Barton - Battery Energy Storage System99.9 MW · permitted
- Canalside - Battery Storage System60 MW · permitted
- Far Moor - Battery Energy Storage System50 MW · planned
- Sudmeadow Road, Hempsted - Battery Energy Storage System50 MW · permitted
Other power plants in England
- Walpole Flexible Generation Project2,000 MW
- Outer Dowsing Offshore Wind Farm1,500 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
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.