Slamseys Energy Storage (10 MW)
Slamseys Energy Storage is a 10 MW battery storage project in Braintree, England. Its status in the Renewable Energy Planning Database (July 2026 extract) is: under construction since 13 January 2020; the record was last updated on 20 January 2020.
10 MWbattery storage
under constructionstatus in REPD
20 January 2020record last updated
Braintreecouncil area
Planning timeline
| Date | Stage |
|---|---|
| 6 July 2017 | Application submitted |
| 15 September 2017 | Planning permission granted |
| 13 January 2020 | Construction started |
Project details
- Technology
- battery storage (stand-alone storage)
- Capacity
- 10 MW
- Status (REPD)
- under construction
- Record last updated
- 20 January 2020
- Operator or applicant
- Gridserve Energy Storage
- Planning authority
- Braintree
- Planning application reference
- 17/01235/FUL
- Address (REPD)
- Land North Of Slamseys Farm, Blackley Lane, Great Notley, Essex
- Council area (by location)
- Braintree
- Time to decision
- 10 weeks
- REPD reference
- 7000
Who decides
| Applications | Braintree | UK |
|---|---|---|
| Decided applications (solar, wind, battery) | 34 | 10,236 |
| Refused | 3 (9%) | 19% |
| Solar refused | 3 of 25 | 12% |
| Battery storage refused | 0 of 9 | 16% |
| Median time from submission to decision | 15.9 weeks | 17.0 weeks |
| Appeals lodged / allowed | 2 / 2 | — |
Other large projects within 10 km
| Project | Type | MW | Status | km |
|---|---|---|---|---|
| Felsted School Road Solar Photovoltaic Farm & Battery storage | solar farm | 49.9 | approved, not built | 1.2 |
| Drapers Farm Solar Park | solar farm | 6 | operational | 1.8 |
| Braintree Road, Cressing | battery storage | 57 | under construction | 4.4 |
| Cressing Solar Farm (Phase 2) | solar farm | 18 | abandoned | 5.4 |
| Cressing Solar Farm (Phase 1) | solar farm | 5 | operational | 5.4 |
| Cressing East Solar Farm | solar farm | 24.9 | approved, not built | 5.9 |
| Cressing Farm, Witham Road Solar Farm | solar farm | 13.8 | approved, not built | 6.1 |
| Periwinkle Hall - Links Solar photovoltaic farm & Battery storage | solar farm | 35 | operational | 7.1 |
| Longfield | solar farm | 500 | approved, not built | 7.7 |
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 (51.8508, 0.5235).