All case studies
Wilmslow, Greater Manchester
Solar + Battery
11.85kW Solar + Tesla Powerwall 3 — Wilmslow
11.85kW Solar + Tesla Powerwall 3 (13.5kWh) + Tesla Backup Gateway
System size
11.85 kW
Battery
13.5 kWh
Payback
5 yrs
Year 1 savings
£2,550
25-year savings
£160,663
Before
- Electricity: 11,000 kWh/yr — £2,950
- Total: £2,950/yr
After
- Electricity: £400/yr
- Total: £400/yr (86% lower)
Less than £400 per year
The project
An 11,000 kWh-per-year Wilmslow home wanted serious generation, premium storage and whole-home backup during outages. The 11.85kW DMEGC array paired with Tesla Powerwall 3 and Backup Gateway delivered exactly that — bills under £400 a year and resilient power when the grid drops.
System specification
- 23× DMEGC 515W Solar Panels
- 1× Tesla Powerwall 3 11kW Hybrid Inverter
- 1× Tesla Powerwall 3 13.5kWh Battery Storage
- 1× Tesla Backup Gateway
Installation gallery
