CONSTITUENCY BRIEFING · ENERGYMAP.APP
Dwyfor Meirionnydd
Dwyfor Meirionnydd has 1.9 MW of clean power (all solar) approved and still not built: enough to supply a year's electricity to 700 homes. When the wires are too full to carry the power, Britain pays wind farms to switch off instead. No wind farm here is paid that way — almost all of it goes to wind farms in Scotland. That cost is shared across every bill in Britain, so households here pay for it too: about £92 a year per household, £3.9m across the constituency's 42,488 homes. A 100 MW battery was refused planning here in 2026; while discharging it could have supplied about 350,000 homes.
Ranks 352 of 650 for clean power approved and not built.
What is stuck, and why
| Project and developer | Tech | Size | Why it is stuck |
|---|---|---|---|
| Tyddyn Forgan, Llanddeiniolen - Energy Storage SysteFirstway Energy / Net Zero Twenty Six Limited | Battery | 100 MW |
Approved less than a year ago — nothing has happened sinceWho can move it: the developer and the network company |
| Glyn Rhonwy (larger version)Snowdonia Pumped Hydro (Quarry Battery Company | Pumped Storage Hydroelectricity | 100 MW |
Approved 9 years ago — nothing has happened sinceWho can move it: the developer and the network company |
| Seion, Pentir - Battery Energy Storage SystemBrockwell Storage & Solar Limited | Battery | 100 MW |
Refused by Gwynedd Council in 2026Who can move it: Gwynedd Council |
What else is in the briefing
- All 9 projects, each with its planning reference and the organisation that holds the next decision
- Every approval a project still needs, and which of them the public can see
- What building them would mean here — community payments, business rates and construction work
- How Dwyfor Meirionnydd compares with its neighbouring constituencies
- Drafted parliamentary questions and letters, filled in with this seat's figures
- 3 story angles for local reporting
- A two-page PDF, and a newsroom edition with the references and who to call
No account needed for any of this:
the full seat page with every figure,
the method and sources,
and this constituency's raw data.
The account covers the packaged briefing only.