Go solar and save

Read our advice on solar panels and achieving an energy efficient home. Plus, explore our selection of member exclusive solar panel related offers before choosing the one that works best for you.

Geographical restrictions and T&Cs apply.

Which?

Home energy planning service

Start making your property more energy efficient and prepare for a greener future with our free service for all UK homeowners.

Solar panel buying advice

Our essential solar guide, including types of solar pv panels, how much electricity you can expect to generate and tops from experienced owners.

Member exclusive offers from Which? Trusted Traders

HEATABLE - choose from the following:

  • Get a £750 discount on the purchase of solar panel and battery purchase and installation
  • Get a £500 discount on the purchase and installation of solar panels only
  • Get a £250 discount on the purchase and installation of a battery only
  • Get a £50 discount on the purchase and installation of an EV charger only.
Find out more

Offer ends 30 September 2026 and is open to Which? members only. Geographical availability - UK Nationwide excl. NI. T&Cs apply.

Heatable

SUNSAVE

Get a 7.5% discount on the price of Solar PV installation.

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Offer ends 30 September 2026 and is open to Which? members only. Geographical availability - England, Wales and majority of Scotland. T&Cs apply.

Which?

SGS - choose one of the following:

  • 5% off the price of Solar PV Installation (up to maximum value of £750)
  • Buy 1 x panel and get 1 x free (up to 10 x panels)
  • 1 x free Eddi Hot Water diverter with any Solar installation
  • Free EV charger for any solar installations above £10,000.
Find out more

Offer ends 30 September 2026 and is open to Which? members only. Geographical availability - South Central & South West England. T&Cs apply.

Which?

GREGOR HEATING

Offer - 5% discount on the price of Solar PV installation.

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Offer ends 30 September 2026 and is open to Which? members only. Geographical availability - Bristol, Bath, South Gloucestershire & North Somerset. T&Cs apply.

Which?

1st CALL GAS

Get a £750 discount on the price of Solar PV installation.

Find out more

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.

Which?

Membership questions

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.