Battery Storage
Battery systems store any excess electricity your solar panels generate during the day, so you can use it at night, or (in some cases) during a power cut.
Choosing a battery can be an attractive solution if you are receiving a low export tariff or no feed-in tariff.
Tesla Powerwall 2
We specialise in the new Tesla Powerwall 2 – Tesla continue to innovate both in design and in customer incentives.
- Minimalist modern design.
- Can be mounted indoor or outdoor.
- AC coupled, no need to install separate charge controller
- Tesla Gateway gives you power in the event of a power cut
- Tesla App – monitor energy production and consumption; control your system from anywhere
- 10 year warranty, 80% retention after 10 years
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NEW! FROM OCTOBER 2020 – Tesla are now offering an energy tariff to buy electricity from them and an export tariff for customers with solar PV and a Powerwall. Rates to buy electricity are as low as 8p per unit and to export as high as 11p per unit (as at October 2020). These rates are a huge challenge to Big 6 prices!
Other Battery Systems
PureStorage II
5 kWh | 10 kWh
A fully integrated AC battery system for residential use.
It’s a British product and uses the safest and highest performing lithium-ion-phosphate battery cells.
LG Chem
- DC coupled – requires a separate charge controller
- Can be wall or floor mounted
- Can be installed in a semi-outdoor location, such as veranda or carport, but should not be located in a position exposed to direct sunlight.
- 10 year warranty, 60% retention after 10 years
SMA
- Inverter combined with BYD battery – combined energy and storage
- AC coupled
- Indoor or outdoor installation
- Top quality components – SMA inverter and BYD battery
- 10 year warranty, 60% retention after 10 years
Victron
- Very efficient in off-grid systems
- Light – save up to 70% weight
- Energy dense – save up to 70% in space
- 5000 cycles to 50% DoD (depth of discharge)
- 3000 cycles to 70% DoD
- 2500 cycles to 80% DoD
- -20°C to +50°C operating temperature (charge current reduced at low temperatures)
