Net metering is a novel concept that allows property owners who produce their own energy to sell surplus power back to the electric grid. There are many, many, many reason why this should be adopted and the International Business Times looks at people are selling energy back to the grid not for profit, but for philosophical reasons. The profit must help the decisions though.
“Net metering essentially allows people to become mini-power producers. Programs vary state to state, but they are typically coupled with financial incentives that make it easier to invest thousands of dollars for photovoltaic panels, windmills or fuel cells. Since sun and wind are intermittent, customers still rely on the grid for steady service. The meter runs backward when more energy is produced than a customer consumes.”