Butts Field, Mill Lane (99 MW battery storage)
Butts Field, Mill Lane is a 99 MW battery storage project in Southampton, England. Its status in the Renewable Energy Planning Database (July 2026 extract) is: approved on 3 October 2024, not yet built; the record was last updated on 7 May 2025.
99 MWbattery storage
approved, not builtstatus in REPD
7 May 2025record last updated
Southamptoncouncil area
Planning timeline
| Date | Stage |
|---|---|
| 23 November 2023 | Application submitted |
| 3 October 2024 | Planning permission granted |
| 3 October 2027 | Permission due to expire (unless work starts) |
Project details
- Technology
- battery storage (stand-alone storage)
- Capacity
- 99 MW
- Status (REPD)
- approved, not built
- Record last updated
- 7 May 2025
- Operator or applicant
- Ecotricity Generation Limited
- Planning authority
- Southampton
- Planning application reference
- 23/02942/FULLS
- Address (REPD)
- Butts Field Mill Lane, Nursling, Southampton
- Council area (by location)
- Southampton
- Time to decision
- 45 weeks
- Name in REPD
- Butts Field, Mill Lane - Battery Storage
- REPD reference
- 13573
Who decides
| Applications | Southampton | UK |
|---|---|---|
| Decided applications (solar, wind, battery) | 16 | 10,236 |
| Refused | 2 (12%) | 19% |
| Solar refused | 1 of 14 | 12% |
| Battery storage refused | 1 of 2 | 16% |
| Median time from submission to decision | 7.8 weeks | 17.0 weeks |
| Appeals lodged / allowed | 0 / 0 | — |
Other large projects within 10 km
| Project | Type | MW | Status | km |
|---|---|---|---|---|
| Netley Landfill Solar | solar farm | 12 | operational | 1.0 |
| Weston Lane | battery storage | 49.9 | refused | 1.0 |
| Hamble Lane Battery Energy Storage | battery storage | 6 | approved, not built | 2.3 |
| Chalcroft Solar Park | solar farm | 6.3 | operational | 6.4 |
| East Road, Marchwood | battery storage | 200 | approved, not built | 6.7 |
| Allington Lane Solar & Battery Farm | solar farm | 27 | approved, not built | 7.9 |
| Tavells Lane Solar Farm | solar farm | 5.3 | operational | 8.1 |
| Raglington Farm | solar farm | 5.8 | operational | 8.1 |
| Funtley Refuse Tip | solar farm | 10 | permission expired | 8.8 |
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 (50.8963, -1.3432).