Vancouver Sun: Rising energy costs and environmental concerns are giving a higher profile to conservation, leading many people to seek out renewable energy sources. Denise Francis has made the switch to solar energy with the purchase of her two-storey home in the Drake Landing Solar Community in Okotoks, just south of Calgary. Constructed by Sterling Homes, in partnership with Natural Resources Canada (NRCan), EnerWorks Inc. and developer United Communities, it is Canada’s first solar …