At my house, it would take more then 20 years to use up $53,500 worth of electricity assuming that the panels would be able to generate all the electricity that

At my house, it would take more then 20 years to use up $53,500 worth of electricity assuming that the panels would be able to generate all the electricity that I need (and it probably would not be able to because my roof is not in the perfect angle). I probably will have to stick to a conventional roof.