What if your parked car could earn money? Vehicle-to-grid (V2G) systems allow electric cars to discharge electricity back into the grid, and a year long trial in Denmark is showing how owners can use that ability to generate cash. A fleet of Nissan e-NV200 vans is earning about 1,300 euros ($1,530) a year with V2G, Francisco Carranza, Nissan Europe director of energy services, said in a recent interview. The trial is being conducted by Nissan and Italian utility Enel SpA.

V2G not only provides electric car owners with a potential way to make money; it also addresses an issue many utilities are concerned about. Utilities already have to work to “balance” their electricity grids, ensuring power is produced at a consistent rate despite peaks and drops in demand. The rise of renewable energy may make that more difficult, since sources like wind and solar produce electricity less consistently.

But a V2G system could allow electric cars to absorb any extra electricity produced by wind or solar sources during periods of low demand, and discharge it back into the grid when demand increases. It’s a similar concept to the stationary energy-storage battery packs marketed by Tesla and other companies, but applied to cars. Those cars essentially become mobile energy-storage units.\

http://carfreaksng.com/2017/08/15/know-electric-cars-earning-money-denmark/