Utility bills are constantly on the rise, and even if you have a solar installation, you likely feed a great deal of the power back into the grid. In fact, the average home with a 4 kW solar system feeds some 1,500-1,600 kWh to the grid. While that’s reasonable, and even a good deal, especially if you’re not using it anyway, you’re typically getting less for power you feed into the grid than you pay for it. While export tariffs are…