What are the technological advancements that have made solar power so much more economically viable over the last decade or so?

Question

What are the technological advancements that have made solar power so much more economically viable over the last decade or so?

In: 213

Answer 1

Something not related directly to the panel is energy efficient appliances and fixtures. By reducing the load you require much lower inputs. LED lighting and ground source heat pumps get you a much better return on input than resistive heating and lighting.