The agreement is a sign of growing corporate interest in renewable energy. : Wells Fargo will buy 150 megawatts of solar power from Shell Energy, a move that demonstrates widening corporate interest in renewable energy even among some of the strongest supporters of fossil fuels. The deal is modest: Wells Fargo says the 150 megawatts, purchased from three locations in Virginia and one in California, would meet about 8 percent of its global energy needs. But it carries symbolic value.