No.91 of 650 · approved, not built MP: Chris Hinchliff (Labour) England

North East Hertfordshire

North East Hertfordshire has 75 MW of clean power (all solar) approved and still not built: enough to supply a year's electricity to 27,000 homes. Britain's grid bottlenecks still add to bills here: about £92 a year per household, £4.0m across the constituency's 43,215 homes. A 50 MW battery was refused planning here in 2025; while discharging it could have supplied about 175,000 homes.

Not visible
here

No big wind farm on the national grid is mapped to this constituency, so no switch-off payments show here in national data. Smaller wind farms on the local grid can still be paid to switch off — invisibly. The £ figure for this seat is a floor, not a zero.

how we worked this out

75 MW

of clean power — all solar — approved and still not built, enough to supply a year's electricity to 27,000 homes. Approved at least two years ago; waiting on the grid, not on planning. That is 4.9× the renewable capacity actually running here.

2 projects · planning database (REPD), July 2026 · how we worked this out

£4.0m

is what the grid gap costs this constituency's 43,215 households in a year between them — £92 each, about 51 days of one home's electricity.

The £92 per household is a national figure — identical in every GB seat. Only the seat total varies, with the number of households · NESO · how we worked this out

The waiting list

2 of 2 waiting projects · years since approval

Wickham Hall Estate Solar Photovoltaic Farm 35 MW

2.6 YRS

Tophams Solar Farm 40 MW

2.1 YRS

Every approved, unbuilt project

approved 24+ months ago, still not generating · planning database, July 2026

Site	Technology	Enough for	Capacity	Approved	Waiting
Tophams Solar Farm	Solar Photovoltaics	15,000 homes	40.0 MW	2024-06	2.1 yrs
Wickham Hall Estate Solar Photovoltaic Farm	Solar Photovoltaics	13,000 homes	35.0 MW	2023-12	2.6 yrs

Batteries

projects of 10 MW and above · planning database, July 2026 · what batteries do →

Site	Size	Status	While discharging
Ginns Road, Stocking Pelham - Battery Energy Storage	400 MW	approved, not built 2025	could supply ≈1,402,000 homes
Beane Solar Farm - Solar Panels	354 MW	in planning	could supply ≈1,240,000 homes
Westfield Conservation Park - Battery Energy Storage System	99 MW	in planning	could supply ≈347,000 homes
Dellows, Ginns Road - Battery Storage	90 MW	in planning	could supply ≈315,000 homes
Greens Farm - Battery energy storage	50 MW	approved, not built 2025	could supply ≈175,000 homes
Stocking Pelham - Battery Storage System	50 MW	refused 2025	could supply ≈175,000 homes

What this page does not show

Smaller wind farms on the local grid are also switched off; national data does not show it, so the £ figure here is a floor, not a zero. Offshore wind is counted nationally, never per seat. The planning database can run a quarter behind reality.

Electricity does not travel from a particular project to particular houses. Everything generated goes into the national grid and everyone draws from that shared pool, so "enough for X homes" is a way of sizing the electricity — not a claim that these homes would be powered by this site. Battery storage is counted separately from generation: it moves power in time rather than making it.

Planning statuses come from the government's planning database (REPD), which records what was decided and when, but not why. Where a project was refused we say so and name the authority; for the reasons, look up the planning reference on that council's own register. How to check any figure on this page →

Read the full method, including everything we cannot see →

What has Chris Hinchliff said about the grid in Parliament? Search Hansard →

See the full league table Data (JSON)