Great Oak Energy Hub (400 MW battery storage)
Great Oak Energy Hub is a 400 MW battery storage project in Horsham, England. Its status in the Renewable Energy Planning Database (July 2026 extract) is: approved on 28 March 2025, not yet built; the record was last updated on 6 May 2025.
400 MWbattery storage
approved, not builtstatus in REPD
6 May 2025record last updated
Horshamcouncil area
Planning timeline
| Date | Stage |
|---|---|
| 17 September 2024 | Application submitted |
| 28 March 2025 | Planning permission granted |
| 28 March 2030 | Permission due to expire (unless work starts) |
Project details
- Technology
- battery storage (stand-alone storage)
- Capacity
- 400 MW
- Status (REPD)
- approved, not built
- Record last updated
- 6 May 2025
- Operator or applicant
- Clearstone Energy Limited
- Planning authority
- Horsham
- Planning application reference
- DC/24/1289
- Address (REPD)
- Adj To Shipley Road, Southwater, Horsham
- Council area (by location)
- Horsham
- Time to decision
- 27 weeks
- REPD reference
- 17245
Who decides
| Applications | Horsham | UK |
|---|---|---|
| Decided applications (solar, wind, battery) | 23 | 10,236 |
| Refused | 4 (17%) | 19% |
| Solar refused | 3 of 19 | 12% |
| Battery storage refused | 1 of 4 | 16% |
| Median time from submission to decision | 19.0 weeks | 17.0 weeks |
| Appeals lodged / allowed | 3 / 2 | — |
Other large projects within 10 km
| Project | Type | MW | Status | km |
|---|---|---|---|---|
| Solar Farm & Battery Storage at Cobwood Solar Farm | solar farm | 49.9 | approved, not built | 5.0 |
| Land off Hooklands Lane | solar farm | 5 | operational | 6.6 |
| Land at Five Oaks Farm | solar farm | 5 | operational | 6.8 |
| Priors Byne Farm | solar farm | 7.6 | operational | 7.0 |
| Ford Farm (Ashurst) | solar farm | 10 | operational | 7.7 |
| Kent Street, Cowfold | battery storage | 57 | refused | 8.3 |
| Five Oaks Solar Farm | solar farm | 5 | operational | 8.4 |
| Bolney | battery storage | 200 | approved, not built | 9.2 |
| Bolney Substation | battery storage | 264 | approved, not built | 9.7 |
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 (51.009, -0.3569).