No.335 of 650 · approved, not built MP: Ms Marie Rimmer (Labour) England

St Helens South and Whiston

St Helens South and Whiston has 2.1 MW of clean power (all solar) approved and still not built: enough to supply a year's electricity to 800 homes. Britain's grid bottlenecks still add to bills here: about £92 a year per household, £3.9m across the constituency's 42,068 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

2.1 MW

of clean power — all solar — approved and still not built, enough to supply a year's electricity to 800 homes. Approved at least two years ago; waiting on the grid, not on planning.

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

£3.9m

is what the grid gap costs this constituency's 42,068 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

3 of 3 waiting projects · years since approval

St Helens Rugby League Stadium, Peasley Cross Lane - Solar Panels 0.4 MW

3.6 YRS

College Street - Solar Panels 1.2 MW

2.1 YRS

Lea Green Business Park, Eurolink - Solar Panels 0.6 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
College Street - Solar Panels	Solar Photovoltaics	400 homes	1.2 MW	2024-06	2.1 yrs
Lea Green Business Park, Eurolink - Solar Panels	Solar Photovoltaics	200 homes	0.6 MW	2024-06	2.1 yrs
St Helens Rugby League Stadium, Peasley Cross Lane - Solar Panels	Solar Photovoltaics	100 homes	0.4 MW	2023-01	3.6 yrs

Plus 6 more approved within the last two years.

Batteries

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

Site	Size	Status	While discharging
Sutton Manor - Battery Storage Facility	57 MW	approved, not built 2022	could supply ≈200,000 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 Ms Marie Rimmer said about the grid in Parliament? Search Hansard →

See the full league table Data (JSON)