Our Advice Column: Plug-in Solar Panels

I’m doing everything I can to save money on my energy bills, and I’ve recently heard about new plug-in solar panels. I can’t get traditional panels installed because I rent a flat, plus they’re very expensive. Are plug-in solar panels a suitable alternative for people like me?

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Plug-in solar panels are designed to sit outside on a balcony or in a garden, and plug directly into your mains electricity to generate power. Like traditional panels, they can help cut your energy bills by generating electricity you can use in your home. Though they produce less power, plug-in kits are cheaper upfront and more accessible to renters or flat-dwellers with outdoor space, as they don't require roof access or professional installation.

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There are a few things to consider before you buy. Firstly, you’ll need to make sure it’s right for you and your home. You'll need an unshaded outdoor space that ideally faces south, though east or west will still catch some sun for part of the day. The government estimates you could save up to £110 a year on your energy bills with a plug-in solar kit, but your actual savings will depend on things like where your panels are located and if you have the flexibility to use appliances during the day. 

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One big difference to be aware of is that unlike traditional panels, you must use or lose the power you generate. Current rules mean most people won’t be able to store electricity in a battery, and you can’t get paid for any unused power generated by your kit.

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It’s important to check if you need permission before you make a purchase. Read the government’s official online guidance to see if you need approval first. The key thing to know is that if you rent or live in a leasehold property, you should speak to your landlord or freeholder. And if your home is a listed building or in an area with planning restrictions, you should speak to your local council.

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Follow the government’s safety rules, included in the online guidance, before plugging in a new kit. Key rules include plugging your kit into a safe wall socket (never an extension lead) and sticking to the strict limit of one kit per household.

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To ensure your kit is compliant with UK regulations, only purchase an all-in-one kit that features a 3-pin UK plug and a UKCA (UK Conformity Assessed) mark. If you’ve already bought one that doesn’t meet these criteria, see if you can return it, or contact the Citizens Advice Consumer Service for advice.

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Finally, you’ll need to register your kit with your electricity network company. Your electricity network company provides the wires to your home and is different from the company you pay your bills to. You can find your network company via your electricity bill or by visiting the Energy Networks Association (ENA) website.