Documenting the installation of 30 solar panels on our house in 2011.
With the State and Federal incentives at the time, our cost was a small fraction of the total expense. We will recoup that and much more long before the 15 year lease agreement ends, even in cloudy Portland, Oregon.
We now have two utility meters, the original one and a new one associated with the installation by SolarCity. On the right is the DC to AC inverter.
As expected, the solar panels are not happy on really cloudy days---the output can usually be measured in three digits.
But even on just partly sunny days, the output quickly rises and the electronic utility meters can "spin" backward rather fast.
When the arrows on the utility meters point to the left instead of right, the power company is paying us for a change. It was worth it.