Powered land · Hertsmere, England
1.4 ha brownfield site at South Block Parkside, High Street, Street Potters Bar, Hertsmere
A brownfield site of 1.4 ha in Hertsmere, England, on the brownfield land register as previously developed land. It lies 0.23 km from the Central Potters Bar Primary 11kV substation (UK Power Networks, East England licence area), which has 10 MVA of demand headroom and 16.4 MVA 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Owner, grid capacity and planning status on request.We do not publish owners.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 site at HM Land Registry, the headroom and connection queue at the nearest substation and its planning history, and find out whether the site is available.
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Facts
Every value links to its source. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Area | 1.4 ha (the area its register gives) | Rare Context powered-land sites · ODbL 1.0 · checked 25 Oct 2026 |
| Site from | Brownfield land register (England) | Rare Context powered-land sites · ODbL 1.0 · checked 25 Oct 2026 |
| Owner type | Private | planning.data.gov.uk · record · Open Government Licence v3.0 · checked 25 Oct 2026 |
| Planning permission | Granted | planning.data.gov.uk · record · Open Government Licence v3.0 · checked 25 Oct 2026 |
| Address | South Block Parkside, High Street, Street Potters Bar, EN6 5AU | planning.data.gov.uk · record · Open Government Licence v3.0 · checked 25 Oct 2026 |
| Permit date | 15 Feb 2021 (full-planning-permission, issued by Hertsmere Borough Council) | planning.data.gov.uk · record · Open Government Licence v3.0 · checked 25 Oct 2026 |
| Register reference | BR057 (planning authority Hertsmere Borough Council) | planning.data.gov.uk · record · Open Government Licence v3.0 · checked 25 Oct 2026 |
| Register entry | Brownfield site: South Block Parkside, High Street, Street Potters Bar, EN6 5AU | planning.data.gov.uk · record · Open Government Licence v3.0 · checked 25 Oct 2026 |
| Adopted local plan | Hertsmere Local Plan 2012-2027 (Hertsmere Borough Council; adopted 16 Jan 2013) | planning.data.gov.uk · Open Government Licence v3.0 · checked 25 Oct 2026 |
| Not designated | ancient woodland, conservation area, green belt, 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 | Hertsmere, England | Rare Context powered-land sites · ODbL 1.0 · checked 25 Oct 2026 |
| Coordinates | 51.6959, -0.1766 (the register's point for the site) | Rare Context powered-land sites · ODbL 1.0 · checked 25 Oct 2026 |
| Nearest substation | Central Potters Bar Primary 11kV (0.23 km, register point to the substation's mapped point) | Rare Context powered-land sites · ODbL 1.0 · checked 25 Oct 2026 |
| Substation voltage | 11 kV | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
| Substation 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 at the substation | 10 MVA | UK Power Networks open data portal · CC BY 4.0 · checked 25 Oct 2026 |
| Generation headroom at the substation | 16.4 MVA | UK Power Networks open data portal · CC BY 4.0 · 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 register gives a point and an area, not an outline: the distance runs from that point, so the site's edge can be closer to the substation.
How it compares
#2 of 18 sites in Hertsmere and #3,393 of 8,607 in the United Kingdom by site score. Larger than 17% of the sites in Hertsmere. Closer to its substation than 94% of them.
| Part | This site | Points | Of |
|---|---|---|---|
| Area | 1.4 ha | 0 | 30 |
| Distance to the substation | 0.23 km | 26.6 | 30 |
| Demand headroom at the substation | 10 MVA | 10 | 40 |
| Site score | 37 | 100 |
How the site score works in the United Kingdom · Search sites in Hertsmere
Nearby sites on the same substation
2 other sites have Central Potters Bar Primary 11kV as nearest substation and would compete for its capacity.
Data on this page
- Supported by National Energy SO Open Data. NESO GIS boundaries for GB DNO licence areas, NESO Open Data Licence.
- 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.
- UK Power Networks. UK Power Networks open 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.