CONSTITUENCY BRIEFING · ENERGYMAP.APP
Welwyn Hatfield
Welwyn Hatfield has 3.8 MW of clean power (all solar) approved and still not built: enough to supply a year's electricity to 1,400 homes. Britain's grid bottlenecks still add to bills here: about £92 a year per household, £4.0m across the constituency's 43,833 homes.
Ranks 278 of 650 for clean power approved and not built.
What is stuck, and why
| Project and developer | Tech | Size | Why it is stuck |
|---|---|---|---|
| Tollgate Farm Battery StorageRNA Energy / Harmony Energy Storage/ Tag Energy UK | Battery | 50 MW | Under constructionWho can move it: the developer · earliest connection 2027 (in construction) · planning ref 6/2017/2340/FULL |
| Tollgate Farm, Welham Green - Solar FarmBrockwell Energy Limited | Solar | 16 MW5,800 homes | Waiting 13 months for a planning decisionWho can move it: Welwyn Hatfield Council · planning ref 6/2025/1458/MAJ |
| Stanborough, Hatfield - Solar ArrayJ Reddington Limited | Solar | 10 MW3,600 homes | Approved a year ago — nothing has happened sinceWho can move it: the developer and the network company · planning ref 6/2023/1802/MAJ |
| Dellsome Power Hatfield Grid Station - Energy storage facilityAMP Energy Services Limited | Battery | 5 MW | Approved 5 years ago — nothing has happened sinceWho can move it: the developer and the network company · planning ref 6/2021/1020/FULL |
| Welwyn Power - Energy Storage FacilityAMP Energy Services Limited | Battery | 5 MW | Approved 4 years ago — nothing has happened sinceWho can move it: the developer and the network company · planning ref 6/2022/1190/FULL |
Plus 3 smaller projects — see the full seat page.
Compared with its neighbours
| Constituency | Approved, not built | Running | Paid to switch off |
|---|---|---|---|
| Welwyn Hatfield | 3.8 MW | 0 MW | not visible |
| Hertsmere | 1.4 MW | 13 MW | not visible |
| St Albans | 1.9 MW | 0 MW | not visible |
| Harpenden and Berkhamsted | 0.3 MW | 13 MW | not visible |
| Hitchin | 50 MW | 33 MW | not visible |
| Stevenage | 0.9 MW | 1 MW | not visible |
Hitchin next door has 50 MW waiting, more than Welwyn Hatfield's 3.8 MW.
The rest of the briefing
- Every approval each project still needs, and which of them the public can see
- What building them would mean here — community payments, business rates and construction work
- Drafted parliamentary questions and letters, filled in with this seat's figures
- 2 story angles for local reporting
- A two-page PDF, and a newsroom edition with the references and who to call
Everything above needs no account, and neither does the full seat page, the method or this constituency's raw data. The account covers the packaged briefing and its PDF, and nothing else.