118.2 Kwh of electricity from the grid at 21 cents per Kwh*
118.2 x 0.21 = 24.822
132.8 Kwh produced by our panels
and fed into the grid at 68 c pr Kwh
132.8 x 0.68 = 90.304
90.304 - 24.822 = 65.482
Can't wait for the next 'bill'...it should be a cheque!
*21 cents per Kwh is what we pay for peak.
Some of the 118.2 Kwh would be charged at a lower rate
because we also have an off-peak rate to heat the hot water.
Mind you, this is a drop in the ocean of the overall cost of the system.
But it still makes my solar powered heart skip.