There's no ignoring the fact that solar panels, heat pumps or at-home wind turbines are expensive to install, and so require a chunk of funds up front. Wind power is more efficient than solar, for example, but the
Energy Saving Trust
estimates that a domestic 5kW pole-mounted system can cost up to £34,000, so it's hardly a small-change investment.
You'll also need to consider the maintenance costs and effort that goes into the upkeep of these power sources, which are harvesting the elements. For example, you'll need to clean your solar panels so that they
remain as efficient as possible, and any mistakes made by using abrasive materials or the incorrect soap can mean an additional expense for repairs. You're also likely to need to get on the roof to clean solar
panels and check wind turbines, so you either need a head for heights or you'll need to pay a contractor to do this for you!