I was worried that our Tesla home solar system was performing less well over time. It went from making 100% of our electricity in 2022 to 75% in 2025 and 78% so far this year. A little investigation revealed the culprits. Us. My wife and I have steadily increased our electricity usage, while solar generation has remained roughly in the same range. We didn’t have an EV when we got our Tesla home solar system. First we got a Model Y, and then we traded it for a Cybertruck. Our gasoline expense went to ZERO, but we use more electricity. Some of the increase on the electric meter is energy that used to come from gasoline. We are old and getting older. Never going to a gas station is wonderful. We keep our home cooler in the summer and warmer in the winter than many people do. We have an 80-gallon water heater that supports what we consider hydrotherapy—long, soothing showers. We also have a small pool that is passively solar heated, but the filtration pump needs to run quite a bit. In short, we use more power than the average American home and we're okay with that. Electricity buys us transportation, comfort, a lot of hot water, recreation, and something particularly valuable where we live in Florida: resilience. Hurricanes and thunderstorms take down the grid every year. The longest outage in our neighborhood was two and a half hot and humid days. We were fine. The takeaway here is that home solar is great. Energy independence is marvelous. And if you’re sizing a new solar system, I suggest installing more capacity than you need now. Don’t size it just for the lifestyle you have today. Think about the electricity-consuming life you may have ten years from now. See the chart. Our solar generation didn't collapse. We made virtually the same amount of electricity in 2025 as we did in 2022. Our need for electricity grew.