Powered land · Windsor and Maidenhead, England
44 ha site near Cordwallis Primary substation, Windsor and Maidenhead
A candidate site of 43.7 ha in Windsor and Maidenhead, England: one HM Land Registry INSPIRE title polygon. It lies 1.24 km from the Cordwallis Primary substation (Southern Electric Power Distribution plc), which has 6.48 MVA of demand headroom and none for generation.
Owner, grid capacity and planning status on request.We do not publish owners. Ask us and we look up the registered owner of this title at HM Land Registry, the headroom and connection queue at the nearest substation and the local plan and planning applications, and find out whether the site is available.
Request owner, grid and planningFacts
Every value links to its source. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Area | 43.7 ha (the area of its INSPIRE polygon, the indicative extent of a registered title) | Rare Context powered-land sites · ODbL 1.0 · checked 24 Oct 2026 |
| INSPIRE polygon | 54074335 (its id in the HM Land Registry INSPIRE Index Polygons) | HM Land Registry INSPIRE Index Polygons · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Green belt | London Green Belt (99.8% of the site; Ministry of Housing, Communities & Local Government) | planning.data.gov.uk · Open Government Licence v3.0 · checked 25 Oct 2026 |
| Not designated | ancient woodland, National Landscape (AONB), national park, Ramsar wetland, registered park and garden, scheduled monument, Special Area of Conservation (Natura 2000), Special Protection Area (Natura 2000), Site of Special Scientific Interest, World Heritage Site buffer zone and World Heritage Site (checked against the published areas) | planning.data.gov.uk · Open Government Licence v3.0 · checked 25 Oct 2026 |
| Location | Windsor and Maidenhead, England | Rare Context powered-land sites · ODbL 1.0 · checked 24 Oct 2026 |
| Coordinates | 51.5390, -0.7093 (a point on the polygon) | Rare Context powered-land sites · ODbL 1.0 · checked 24 Oct 2026 |
| Nearest substation | Cordwallis Primary (1.24 km, polygon edge to the substation's mapped point) | Rare Context powered-land sites · ODbL 1.0 · checked 24 Oct 2026 |
| Substation voltage | 33 kV (levels 33, 11 kV) | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Substation operator | Southern Electric Power Distribution plc | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Demand headroom at the substation | 6.48 MVA | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Generation headroom at the substation | 0 MW | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Congestion (offtake) at the substation | None (green on the heat map) | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Congestion (feed-in) at the substation | Full (red on the heat map, limited by upstream thermal capacity) | SSEN Distribution data portal · CC BY 4.0 · checked 24 Oct 2026 |
| Large generation within 10 km | 55 MW of waste-to-energy (1 plant of 50 MW or more in operation) | Rare Context powered-land sites · ODbL 1.0 · checked 25 Oct 2026 |
| Water stress | High (40–80%) (score 3.4 of 5, withdrawals 52.2% of renewable supply) | WRI Aqueduct 4.0 · CC BY 4.0 · checked 25 Oct 2026 |
The polygon shows where the title lies, not its legal extent: HM Land Registry notes that the extent of a title can only be established from the title plan.
How it compares
#54 of 107 sites in Windsor and Maidenhead and #3,900 of 6,229 in the United Kingdom by site score. Larger than 65% of the sites in Windsor and Maidenhead. Closer to its substation than 39% of them.
| Part | This site | Points | Of |
|---|---|---|---|
| Area | 43.7 ha | 11.6 | 30 |
| Distance to the substation | 1.24 km | 11.4 | 30 |
| Demand headroom at the substation | 6.48 MVA | 6.5 | 40 |
| Site score | 29 | 100 |
How the site score works in the United Kingdom · Search sites in Windsor and Maidenhead
Nearby sites on the same substation
10 other sites have Cordwallis Primary as nearest substation and would compete for its capacity.
- 2 ha brownfield site at DTC Research, Belmont Road, Maidenhead, Windsor and Maidenhead0.22 km · score 33
- 1 ha brownfield site at School on College Avenue, Windsor and Maidenhead0.49 km · score 29
- 39 ha site near Cordwallis Primary substation, Windsor and Maidenhead1.59 km · score 23
- 1.55 ha brownfield site at St Marks Hospital, Maidenhead, Windsor and Maidenhead1.06 km · score 21
- 31 ha site near Cordwallis Primary substation, Windsor and Maidenhead1.65 km · score 20
- 37 ha site near Cordwallis Primary substation, Windsor and Maidenhead1.8 km · score 19
- 29 ha site near Cordwallis Primary substation, Windsor and Maidenhead1.63 km · score 19
- 28 ha site near Cordwallis Primary substation, Windsor and Maidenhead1.66 km · score 19
- 1.25 ha brownfield site at Cookham Gas holder, Whyteladyes Lane, Cookham, Windsor and Maidenhead2.72 km · score 6
- 1 ha brownfield site at Gas Holder Station Whyteladyes Lane Cookham Maidenhead, Windsor and Maidenhead2.7 km · score 6
Data on this page
- Contains public sector information licensed under the Open Government Licence v3.0. DUKES 5.11: Power stations in the United Kingdom, Open Government Licence v3.0.
- This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. HM Land Registry INSPIRE Index Polygons, Open Government Licence v3.0.
- Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026. ONS Open Geography: Local Authority Districts, Open Government Licence v3.0.
- Contains public sector information licensed under the Open Government Licence v3.0. planning.data.gov.uk, Open Government Licence v3.0.
- Rare Context. Rare Context powered-land sites, ODbL 1.0.
- SSEN Distribution. SSEN Distribution data portal, CC BY 4.0.
- Kuzma, S., M.F.P. Bierkens, S. Lakshman, T. Luo, L. Saccoccia, E. H. Sutanudjaja, and R. Van Beek. 2023. Aqueduct 4.0: Updated Decision-Relevant Global Water Risk Indicators. Technical Note. Washington, DC: World Resources Institute. doi.org/10.46830/writn.23.00061. WRI Aqueduct 4.0, CC BY 4.0.