I remember someone talking about solar panels and making it into a project. This article discusses the increase of efficiency of the panels. Solarcity just came out with the highest efficiency rooftop solar panels with a 22% rating (meaning 22% of the energy hitting the panels is converted to electricity). Another thing that is making it a big deal is that they are reducing the cost of it. It cost about 50 cents per watt, where the market today is between 55-60 cents per watt. With this being over a thousands watts, it helps reduce the cost to an extent.