Ember Climate is a renewable energy advocacy group in Europe. This week, it issued a report which claims electricity from solar energy resources saved Europeans $29 billion this summer. Let’s take look at the numbers. Europe derived 12% (99.4 TWh) of its electricity this summer from solar resources. That’s up from 9% (77.7 TWh) last summer. Solar surpassed the share of wind (12%) and hydro (11%) in the power mix and was not far from coal’s 16%.