Yale Environment 360: U.S. homeowners installed more solar power systems in the first three months of this year than in any other previous quarter, according to data from the Solar Energy Industries Association (SEIA), a trade group for the U.S. solar sector. The first quarter of any given year typically sees the fewest solar installations because of winter weather, the group notes, but the period from January through March of this year saw a solid increase over last quarter 11 percent and a 76 percent increase over...