South Australia has one of the highest wind penetrations in the world, they recently had a peak of 60% electricity being supplied by the wind. Though with the

South Australia has one of the highest wind penetrations in the world, they recently had a peak of 60% electricity being supplied by the wind. Though with the higher wind penetration levels wind farm operators in South Australia are facing a problem with the current electricity market design. When the wind blows, there is a surplus of electricity supply. The price for electricity dives, sometimes to -$1000 / MWh. Yes that is correct, the price goes below zero and consumers are paid to use electricity. And conversely when the wind is not blowing, traditional fossil fuel power stations are able to bid much higher prices without fear of competition. An interesting challenge for electricity market designers to solve.