power plants, solar panels produce no polluting emissions, including those that cause global warming. With no moving parts, solar panels are silent, easy to operate and rarely need... maintenance. Solar panels help utilities avoid brownouts and blackouts. When electricity demand is high, such as during a heat wave, utilities could use solar panels to generate... energy rather than firing up expensive and polluting "peak" power plants designed only to operate when demand is highest. Solar panels installed on the roofs of residential...