If you’re weighing up solar panels and want a system installed by a familiar energy brand, Octopus Energy is likely to be one of the names on your list. Best known as a household energy supplier, Octopus now also offers solar panel and battery installations, giving customers a way to generate, store and manage more of their own electricity through one provider. The company has expanded quickly since launching in 2015. Its acquisition of Shell Energy Retail in late 2023 brought another 1.3 million customers onto its systems by March 2024, while Ofgem now ranks Octopus as the largest electricity supplier in Great Britain and the second largest gas supplier. That scale makes it one of the most recognisable brands homeowners will encounter when comparing solar installers and wider home energy services. In this guide, we look at what Octopus Energy offers solar customers, including its installation process, likely costs, warranty cover and battery options.…