AT A GLANCE
|Battery capacity:||6.4 kWh|
Devon’s first Tesla Powerwall reduces amount of electricity Mike and Jan buy from their energy company by 86%.
A Devon couple have reduced the amount of electricity they buy from their energy company by 86%, after receiving Devon’s first Tesla Powerwall energy storage device to compliment their solar panels.
Mike and Jan Lister, who live in Torquay, were looking to reduce their reliance on the national grid and were among the first homeowners in the UK to have the Tesla Powerwall designed and installed to accompany their solar PV system.
This allows Mike and Jan to store the electricity that the solar panels on the roof of their house generate during the day (when the sun is shining), rather than feeding it all back to the grid when it is not used. They can then use the energy stored in the Powerwall whenever they most need it to power lights, computers, televisions and many other devices. Monitored directly from a simple app on their phones and computer, the Listers can see how much energy their solar PV system generates and how this directly stores energy into their Tesla Powerwall.
Now, with news that the Tesla Powerwall 2 – with double the storage capacity – is be available in February, households with higher energy demands will also be able to hugely reduce their need to purchase electricity from the grid.
Keeping the energy that is generated
“We have been fans of solar panels for a long time,” said Mike, “but it seems such a waste to generate all that energy and then send the majority of it back to the grid. Our Powerwall now means that we are now much more self-sufficient, spend much less on our electricity bills, and could power our house even if there was a powercut or grid issues. This makes the very best use of the solar electricity that our panels generate.”
Devon-based SunGift Energy is a certified Powerwall installer. The company installs many different solar-electricity-storage devices, but the US-manufactured Tesla Powerwall is the one that has gained the most attention recently. From February SunGift will have access to the next stage of the technology – the Tesla Powerwall 2 – which will have double the storage capacity of Mike and Jan’s battery.
“We’ve already carried out a high number of installations of the Powerwall,” said Ollie Gibbs, solar specialist at SunGift Energy, “and the feedback has been tremendous. Not only does it hugely reduce reliance on the grid, but also it looks modern and attractive.”
Solar energy available at night
“Energy costs are forecast to rise significantly over the next few years and there are limited fossil fuel resources, so it’s crucial that homeowners get the maximum benefit from their solar panels,” added Ollie. “We designed Jan and Mike’s Tesla Powerwall to work alongside solar PV system, giving them peace of mind that they can produce and use their own electricity supply, with backup so that electricity is available in the evening.
No maintenance required
“Homeowners are increasingly looking for simplicity, so the Powerwall is ideal because – once we’ve installed it – the battery is completely automated and requires no maintenance.
“The Tesla Powerwall 2, which we will have in stock from February onwards, will make it possible for houses with larger energy demands to massively reduce their reliance on the grid too.”
The Listers have a 6.6kWp solar PV system, which was installed on the roof of their house by SunGift. The system includes 20 BenQ 330W Modules, a SolarEdge inverter, and a 6.4 kWh Tesla Powerwall battery. The couple can also fully monitor the performance of their solar panels and Tesla Powerwall through their SolarEdge StorEdge software.