π Project Overview
Hilfield Lane, Aldenham - Battery Energy Storage is a 170 MW battery storage project in Eastern. The applicant or operator on record is Penso Power (BW ESS). Planning permission has been granted as of January 2026 and it is awaiting construction. The determining authority is Hertsmere, reference 25/0153/FUL.
Site Schematic
Schematic diagram β not to scale. Illustrative layout based on project specifications.
π§ Technical Specifications
| Capacity (MW) | 170 MW |
| Battery chemistry | Stand-alone Storage |
π Grid Connection & Infrastructure
π’ Development & Ownership
| Developer | Penso Power (BW ESS) |
| Owner / operator | Penso Power (BW ESS) |
| Year consented | 2026 |
| Location | W/O Hilfield Lane, Aldenham, Watford, Hertfordshire, WD25 8DD |
| Region | Eastern |
| Coordinates | 51.6559215Β°N, 0.3390303Β°W |