[taneq]

Really good question. The difference is that you pay retail rates for power, but generation costs are better reflected by wholesale rates. The difference between the two is the cost of maintaining the grid. In the past, power utilities have amortised the cost of maintaining the grid into the cost of power, but realistically we need to start charging a lot more for grid connection and a lot less per kWh or the power grid's going to go into a death spiral.