Tesla Powerwall

Enjoy the sunshine… at night.

Power through a power cut

Sell to the grid at peak times…. all with the Powerwall.

Tesla Powerwall


After Elon Musk’s inspiring presentation at the launch of the Powerwall, demonstrating how the move to a fossil fuel free planet is achievable with just Solar & Storage the world went battery storage crazy. Tesla’s Powerwall is a big leap forward in solar battery technology. With up to 13.5kWh of storage and capable of delivering 5kW of power continuously and up to 7kW for 10 second periods, the Powerwall  is extremely good value as the price per kWh of storage is the lowest on the market.

All models of Powerwall 2 now come with a Backup ‘gateway’, which ensures you still get electricity if there’s a powercut. Lights, washing machines, dish washers, ovens and hobs will keep working. The gateway even automatically disconnects heavy load appliances like EV chargers and heat pumps, so you have enough power for the essentials.

Having a large amount of storage will set you up to benefit from the ‘time of day’ charging that Smart Meters will bring, meaning you can charge for free from your solar, from the grid at cheap times and then discharge back to the grid at peak rate, further increasing your financial benefits.

The Powerwall  was by far the most popular choice for battery storage for 2018.

Powerwall specs:

Mounting: Wall or Floor Mounted, Indoor / Outdoor

Inverter: Fully integrated Tesla inverter

Usable Capacity: 13.5 kWh

Power: 5 kW continuous, 7 kW peak

Round Trip Efficiency: 90%

Operating Temperature Range: -20C to 50C (-4F to 122F)

Warranty: 10 years

Dimensions: 1150mm x 755mm x 155mm

Price: £7822.50 at 5% VAT

Naked Solar are Tesla Powerwall Certified Installers, which means we offer a customised solar plus battery solution that enables you to access the free, abundant power of the sun and reduces your reliance on fossil fuels. All Tesla certified installers are regularly quality checked by a Tesla engineer to ensure all installs are to the highest standards.


Time-Based Control

If your energy costs vary through the day, or if you are on a time-of-use rate plan, Powerwall can take that into account to maximise your savings. When electricity is expensive, Powerwall uses stored low-cost energy to power your home. Regional regulations may apply to the operation of Powerwall, which may vary some aspects of this mode.

Powerwall learns how you use energy

Powerwall has an array of electrical current sensors that monitor energy usage and solar energy production. Tesla’s intelligent forecasting software predicts future usage and production. Based on the varying cost of electricity from the grid, Powerwall optimises the times it charges and discharges. As Powerwall learns, you get the most value from your solar production without having to change how or when you use energy.

You can set up a schedule to let Powerwall know the times electricity is expensive (peak) and inexpensive (off-peak).

Existing Powerwall owners will see this new feature rolled out via a firmware update over the coming weeks.

Powerwall captures the power of the sun, day and night.