What a difference one year makes. 2017 was my first year with solar panels, and I was very proud that I generated 96% of the electricity I used for the year (including the charging of my electric car – driving on sunshine!). Last year was not as astonishing, though still good. I generated 81% of my total home electric consumption. What changed? Consumption was up 6% in 2018, due to a much hotter summer (in Texas, AC is the big electricity hog). But even bigger, generation was down 10% due to many more cloudy days. I suspect that these two results will be the extremes, and about 90% generated solar power will be about average. I’m still happy with that.