Understand it first,
then decide.

Most homes are. For solar, we look at which way your roof faces, its pitch, any shading and its condition. South is best, but east and west roofs work well, and a shallow north-facing roof can still make sense with a battery. A battery needs wall space inside or outside, often in a garage or utility room. If your roof is not suitable, a battery on its own can still work on a smart tariff.

No. A battery on its own can charge overnight on a time-of-use tariff, when electricity is cheapest, and power your home through the expensive hours. It suits homes where the roof is not right for panels, or where you would rather start with a battery and add solar later.

Yes, in most cases. We check your existing panels and inverter, then recommend a battery that works alongside them, whoever installed your solar.

No. Batteries and solar panels installed in homes in Great Britain carry 0% VAT until 31 March 2027, when the rate is due to return to 5%, whether they are fitted together or on their own.

No. There is no deposit to get started: payment is due once your installation is complete. We accept bank transfer (BACS) and major credit and debit cards, but not American Express.

We aim to get back to every enquiry within one working day. Someone from our team calls you to talk through your home and what you want from a system. Have a recent energy bill to hand if you can, as it helps us size the system properly. We then send you a design and proposal to look over in your own time. Nothing is booked until you say yes.

We agree a date with you once you accept your proposal. The fitting itself typically takes one to two working days, with scaffolding up beforehand and down shortly after. Larger systems need your network operator to approve them before they are connected, and we build that wait into the date. We tell you at the proposal stage whether that applies to you.

We handle all of it. Depending on the size of your system, we either notify your network operator after installation (G98) or apply for approval before it (G99). We register the system with MCS, which you need to be paid for the electricity you export, and issue your electrical certificates. At handover you get every certificate and warranty document together.

Garages, utility rooms, plant cupboards and external walls are all common: both platforms are weather-rated for indoor or outdoor installation. We agree the position with you at design stage.

Through the manufacturer's app: the Tesla app for Powerwall or mySigen for SigenStor. You can see what your panels are generating, how full your battery is and what you are using or exporting, live on your phone. You can also change how the battery behaves, such as how much charge it keeps back for a power cut. We set the app up with you at handover.

With a backup gateway fitted, your battery keeps the home running when the grid goes down: the whole home or selected circuits, depending on how your system is designed. Without backup, the system switches off during a power cut for safety, as all grid-connected solar does.

Our own support team, at support@powergy.co.uk or on 03300 501412. With your permission we can check your system remotely, and if a part fails under warranty we handle the claim with the manufacturer for you.

Every installation comes with our 10 year insurance-backed workmanship warranty, which we register with QualityMark once your installation is complete. The panels, battery and inverter also carry their manufacturers' own warranties, and we register them for you at handover.