Hornsea Project Three (300 MW battery storage)
Hornsea Project Three is a 300 MW battery storage project in South Norfolk, England. Its status in the Renewable Energy Planning Database (July 2026 extract) is: under construction since 1 December 2025; the record was last updated on 9 July 2026.
300 MWbattery storage
under constructionstatus in REPD
9 July 2026record last updated
South Norfolkcouncil area
Planning timeline
| Date | Stage |
|---|---|
| 26 April 2022 | Application submitted |
| 23 January 2023 | Planning permission granted |
| 1 December 2025 | Construction started |
Project details
- Technology
- battery storage (stand-alone storage)
- Capacity
- 300 MW
- Status (REPD)
- under construction
- Record last updated
- 9 July 2026
- Operator or applicant
- Orsted Power (UK) Limited
- Planning authority
- South Norfolk
- Planning application reference
- 2022/0867
- Address (REPD)
- E/O Main Road, Swardeston
- Council area (by location)
- South Norfolk
- Time to decision
- 39 weeks
- Name in REPD
- Hornsea Project Three - Battery Storage
- REPD reference
- 9754
Who decides
| Applications | South Norfolk | UK |
|---|---|---|
| Decided applications (solar, wind, battery) | 50 | 10,236 |
| Refused | 8 (16%) | 19% |
| Solar refused | 1 of 30 | 12% |
| Onshore wind refused | 7 of 7 | 45% |
| Battery storage refused | 0 of 13 | 16% |
| Median time from submission to decision | 20.6 weeks | 17.0 weeks |
| Appeals lodged / allowed | 2 / 0 | — |
Other large projects within 10 km
| Project | Type | MW | Status | km |
|---|---|---|---|---|
| Hall Farm, Hickling Lane | battery storage | 400 | application submitted | 0.7 |
| Hickling Lane, Swainsthorpe -Battery Storage | battery storage | 114 | approved, not built | 1.9 |
| Norwich Substation Storage Facility | battery storage | 49.9 | approved, not built | 1.9 |
| Stoke Lane | battery storage | 130 | approved, not built | 2.3 |
| Land south of Brick Kiln Road | solar farm | 5 | operational | 2.5 |
| Bracon Ash Solar | solar farm | 28.5 | under construction | 2.9 |
| Bloy’s Grove Solar Farm | solar farm | 49.9 | approved, not built | 2.9 |
| Mulbarton Road, Keswick | battery storage | 400 | application submitted | 3.0 |
| Flordon Road, Bracon Ash Solar Panels & Battery Storage | solar farm | 24 | approved, not built | 3.9 |
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 (52.5754, 1.2473).