It’s usually the first practical question. Not how the system works. Not what panels are used, Just - How much difference does it actually make to your bills? The answer is: it can be meaningful, but it depends on how your home uses energy. What the Numbers Actually Look Like Most UK households aren’t starting from scratch. You already have an electricity bill, and that’s the best place to start. Based on typical figures referenced by organisations like MoneySavingExpert, a s