With over 10 years’ experience writing about consumer affairs, Sarah leads on energy content at Which?, helping customers navigate the market and exposing poor practice. Solar water heating systems – ...

Solar thermal panels (also known as solar water heaters) efficiently convert sunlight into energy, using it to create hot water for your home. Solar thermal is an older technology than solar ...

In the early 198os, my dad installed a solar thermal panel on our roof in Florida. For a 5-year-old, the big black square looked like a portal into the future. The device, essentially a glass box with ...