That is about 90% true for home solar users who sell power to the grid. If, however, you don’t put power onto the grid because you have hybrid inverters that allow you to disable the grid sell feature, then having solar doesn’t make you incur extra fees. You’re simply a normal power customer like everyone else except you pull from the grid less power (lower power bills).
Put another way, for the first year I had solar, about 50% of the power we consumed was power that the utility had no clue about because it didn’t come through the meter. I didn’t tell the utility about my solar — what I did on my side of the meter was my business. A year later I added onto the solar, converted my 2 natural gas appliances to electric, and replaced my wife’s old gas crossover with an EV crossover. End result, for the next year about 80% of our power consumed is homemade (doesn’t pull through the meter), but it’s now for an all electric home and includes driving about 1,500 miles per month on home charged miles.
Only after having that upgrade for a year to study how efficient it is for our climate and power consumption habits did I do the math on the telemetry to realize that selling power to the grid would net me a little more than the extra costs. But even that was only after digging through the regulations and rate plan options to find one that’s best for my numbers. So I’ve been selling power to the grid with Alabama Power for almost 3 years. My past 12 power bills averaged $73/month (no natural gas bill and little gasoline cost with the little we drive the gas pickup). Again, part of the beauty is that most of my energy consumption isn’t regulated because it doesn’t go through the meter. My main two regulators are the two I can count on the most: God’s in charge of giving us sunlight and I’m in charge of how that solar energy is stewarded.