Tesla Powerwall 3 in Scotland.
13.5 kWh storage. Integrated 11.5 kW solar inverter. Whole-home backup. Installed across the Central Belt by Tesla-trained Ecoaim engineers.
Built for Scottish homes.
The Powerwall 3 makes particular sense in Scotland for three reasons: the built-in inverter cuts cost vs separate AC-coupled batteries, the unlimited-cycle warranty matters when you cycle daily on Octopus Flux, and the EPS backup is genuinely valuable in Highland and Borders areas where storm-induced power cuts still happen most winters.
Key features
- 13.5 kWh usable capacity (most home brands cap at 5-10 kWh)
- Built-in 11.5 kW solar inverter — no separate inverter required for new installs
- Whole-home Emergency Power Supply (EPS) — backup during power cuts
- 10-year unlimited-cycle warranty (one of the strongest in the market)
- Outdoor-rated IP67 — install internal or external, including coastal
- Tesla mobile app — live monitoring, time-of-use scheduling, storm watch
- Octopus Flux compatible — automated arbitrage dispatch
- Stackable up to 4 units (54 kWh) for larger homes or off-grid
Full specifications
| Usable capacity | 13.5 kWh |
| Continuous power | 11.5 kW |
| Peak power | 15.4 kW (10 sec) |
| Solar inverter included | Yes (11.5 kW, DC-coupled) |
| Round-trip efficiency | ~97.5% |
| Backup function (EPS) | Whole-home (transfer 60ms) |
| Warranty | 10 years unlimited cycles |
| IP rating | IP67 — indoor or outdoor |
| Dimensions | 1100 × 600 × 190 mm |
| Weight | 130 kg |
Pros
- +Largest single-unit home battery on the UK market
- +Built-in solar inverter saves £800-£1,200 vs separate units
- +Whole-home backup is the strongest in class
- +10-year unlimited cycle warranty
- +Best mobile app + storm watch + Octopus Flux automation
Trade-offs
- −High upfront cost vs smaller brands
- −~14-18 week lead time during peak demand
- −130 kg unit needs structural-rated wall or floor mount
- −Single brand ecosystem — locked in to Tesla app
Best fit for
- Larger homes (4+ bed) needing 10+ kWh storage
- New solar installs (single inverter, less roof equipment)
- Rural / coastal homes wanting reliable EPS backup
- Octopus Flux users wanting daily peak-export arbitrage
Install detail
Ecoaim is Tesla Powerwall trained and we deliver Powerwall 3 installs across all Central Belt postcodes. Typical lead time is 4-8 weeks from order; site survey, structural check, G99 application to SP Energy Networks, install in 1-2 days, commissioning + Tesla app handover, MCS certificate issued.
Inverter: Built in — no separate inverter required. If you have an existing string inverter you want to keep, we can AC-couple with a Powerwall+ accessory.
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Free quote in 24 hours.
No high-pressure sales. No commission-driven scripts. Just a no-obligation survey + transparent quote — covering every postcode in Scotland's Central Belt.