Everything has maintenance costs, solar is likely to be lower than most. I have a 4.8kWh PV system on my roof, and though it's only been up there 2.5yr, it has

Everything has maintenance costs, solar is likely to be lower than most. I have a 4.8kWh PV system on my roof, and though it's only been up there 2.5yr, it has required no maintenance whatsoever (I bought my home with it, so the upfront costs were rolled into total). It provides far more power than I need to heat and cool, run all my appliances, water heater, etc. - and that's in the cool and cloudy Pacific NW. Now, I am in a certified Passivhaus...