No.456 of 650 · approved, not built MP: Anna McMorrin (Labour) Wales

Cardiff North

Cardiff North has no significant clean power approved and waiting to be built, and none running. Britain's grid bottlenecks still add to bills here: about £92 a year per household, £3.6m across the constituency's 38,695 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

0.7 MW

of clean power — all solar — approved and still not built, enough to supply a year's electricity to 300 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

£3.6m

is what the grid gap costs this constituency's 38,695 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

Llanishen High School 0.2 MW

7.4 YRS

University Hospital of Wales - Roof Mounted Solar Array 0.3 MW

4.1 YRS

Spire Cardiff Hospital, Croescadarn Road - Solar Panels 0.2 MW

2.0 YRS

Every approved, unbuilt project

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

Site	Technology	Enough for	Capacity	Approved	Waiting
University Hospital of Wales - Roof Mounted Solar Array	Solar Photovoltaics	100 homes	0.3 MW	2022-06	4.1 yrs
Llanishen High School	Solar Photovoltaics	100 homes	0.2 MW	2019-03	7.4 yrs
Spire Cardiff Hospital, Croescadarn Road - Solar Panels	Solar Photovoltaics	100 homes	0.2 MW	2024-07	2.0 yrs

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 Anna McMorrin said about the grid in Parliament? Search Hansard →

See the full league table Data (JSON)