Guardian: Cars could be the solution to the intermittent nature of wind power if a multimillion European project beginning on a Danish island proves successful. The project on the holiday island of Bornholm will use the batteries of parked electric cars to store excess energy when the wind blows hard, and then feed electricity back into the grid when the weather is calm. The concept, known as vehicle-to-grid (V2G) is widely cited among greens as a key step towards a low-carbon future, …