Geographical restrictions and T&Cs apply.

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Offer ends 30 September 2026 and is open to Which? members only. Geographical availability - UK Nationwide excl. NI. T&Cs apply.
Get a 7.5% discount on the price of Solar PV installation.
Offer ends 30 September 2026 and is open to Which? members only. Geographical availability - England, Wales and majority of Scotland. T&Cs apply.
Offer ends 30 September 2026 and is open to Which? members only. Geographical availability - South Central & South West England. T&Cs apply.
Offer - 5% discount on the price of Solar PV installation.
Offer ends 30 September 2026 and is open to Which? members only. Geographical availability - Bristol, Bath, South Gloucestershire & North Somerset. T&Cs apply.
Get a £750 discount on the price of Solar PV installation.
Offer ends 30 September 2026 and is open to Which? members only. Geographical availability - Yorkshire (North & South), Derbyshire, Lancashire, Cumbria, Merseyside, North & Mid Wales, Lincolnshire, East Midlands, West Midlands, Nottinghamshire & Cheshire. Other areas may be considered upon enquiry. T&Cs apply.
There are five separate offers available through five Which? Trusted Traders, available with the purchase and installation of solar panels. The offers available vary from provider to provider as outlined above.
The selected providers are each a Which? Trusted Trader and therefore have passed the rigorous assessment set by our trading standards professionals. We selected the providers because they cover a number of geographical locations meaning our members have accessibility to the offer , as well as the quality of their offers and ability to deliver.
Which? will receive a commission once installation has been successfully completed. This commission helps fund our mission to continue as the UK’s consumer champion.
Certain offers may be removed due to being capped as outlined on the offer landing page. We may also choose to add offers from new brands to ensure that consumers have a selection of offers available and have the option to choose the one that works best for them.