What happens if the wind does not blow?

Your electricity supply will not be affected. When you sign up for Eco Energy, we make a commitment to match your electricity needs by purchasing an equivalent amount of renewable power. In very simple terms, we add up all our Eco Energy customers units and ensure sufficient renewable energy is purchased to cover this, in line with our obligation. 

The electricity you are receiving into your house is made up of a mix of fuel types and different renewable technologies (not just wind).