Denver Post: An emerging battle in the renewable-energy wars is between "big solar" and "little solar," between utility-scale arrays and panels on a family's rooftop.
While both sides pay deference to the other, many utilities increasingly have promoted large solar installations as more cost-effective and efficient than small residential units.
Between 2010 and 2014 the amount of utility-scale arrays soared to 9,646 megawatts from just 109 megawatts, according to the Solar Energy Industries Association....