Tollgate Farm Battery Storage (49.5 MW)
Tollgate Farm Battery Storage is a 49.5 MW battery storage project in Welwyn Hatfield, England. Its status in the Renewable Energy Planning Database (July 2026 extract) is: under construction since 1 February 2022; the record was last updated on 1 February 2022.
49.5 MWbattery storage
under constructionstatus in REPD
1 February 2022record last updated
Welwyn Hatfieldcouncil area
Planning timeline
| Date | Stage |
|---|---|
| 12 October 2017 | Application submitted |
| 22 January 2019 | Planning permission granted |
| 1 February 2022 | Construction started |
Project details
- Technology
- battery storage (stand-alone storage)
- Capacity
- 49.5 MW
- Status (REPD)
- under construction
- Record last updated
- 1 February 2022
- Operator or applicant
- RNA Energy / Harmony Energy Storage/ Tag Energy UK
- Planning authority
- Welwyn Hatfield
- Planning application reference
- 6/2017/2340/FULL
- Address (REPD)
- Tollgate Farm, Tollgate Road, North Mymms
- Council area (by location)
- Welwyn Hatfield
- Time to decision
- 67 weeks
- REPD reference
- 7335
Earlier applications for this site
| Application | MW | Submitted | Outcome |
|---|---|---|---|
| Tollgate Battery Storage Facility 6/2017/0702/MAJ | 49.5 | 6 April 2017 | refused 6 July 2017 |
Who decides
| Applications | Welwyn Hatfield | UK |
|---|---|---|
| Decided applications (solar, wind, battery) | 15 | 10,236 |
| Refused | 2 (13%) | 19% |
| Solar refused | 1 of 8 | 12% |
| Battery storage refused | 1 of 7 | 16% |
| Median time from submission to decision | 11.3 weeks | 17.0 weeks |
| Appeals lodged / allowed | 0 / 0 | — |
Other large projects within 10 km
| Project | Type | MW | Status | km |
|---|---|---|---|---|
| Dellsome Power Hatfield Grid Station Energy storage facility | battery storage | 5 | approved, not built | 0.2 |
| Tollgate Farm, Welham Green Solar Farm | solar farm | 16 | application submitted | 0.5 |
| Potters Bar Solar Farm | solar farm | 5 | operational | 3.6 |
| Land At Swanland Road | solar farm | 5 | operational | 4.4 |
| Wrotham Park | solar farm | 30 | application submitted | 4.6 |
| Stanborough, Hatfield | solar farm | 10 | approved, not built | 5.2 |
| Butterfly Lane, Elstree BESS | battery storage | 99.9 | appeal lodged | 8.0 |
| Welwyn Power Energy Storage Facility | battery storage | 5 | approved, not built | 8.0 |
Status and dates as recorded in the Renewable Energy Planning Database (July 2026 extract); the database is compiled from public sources and can lag behind council decisions. Location: REPD grid reference (51.7352, -0.2372).