The solar panel and batteries are just a pet project, I also have a 400w wind turbine thats still in the box. Its that big if don't know where to install it. The solar panel is just really for if power goes out then i can power low powered items up. I done it for a long time. That heater by the way is not a bulb its actually a carbon element and it does heat the room. In futrei can add more panels as i have lots of roof space south facing. I have often thought about installing lots of panels but its just weighing up the costs against what you can get back.