Now that I have added the power company tarrifs into our solar power web system, I am even more obsessed with tracking how much electricity we are producing and saving / selling back to Contact.

“Oh, look. We’ve sold them $0.52 of our power today.”

The app also tells us the CO2 reduction equivalent for various activities. So far we have saved the equivalent of 1,230 km of driving in the car. I don’t know how that is calculated, but I feel smug about it.