Well, I live in California, where electricity costs over 40cents/kwh!!(Because of all the cheap renewables we have) So they almost force you to go solar. So we did about a year and a half ago and haven’t paid for electricity (except for infrastructure charges) since then. and we currently generate way more than we use, so we just installed a heat pump for heating and cooling, and even with that we still have left over power. That’s why we’re looking at EVs or plug in hybrids.
Right now we’re leaning more toward PHEV since my wife typically drives 30-40 miles a day, thus she could run on electricity most of the times. Every once in a while she takes longer trips and then she could supplement that with gas and avoid range anxiety.
We don't have net metering here in Alabama. If I sell power to the grid it's usually about 1/4th per kWh that I earn compared to how much I pay when I buy power. And there are extra fees added for the privilege of selling power to the grid. I'm not complaining, it is what it is. So it's part of the math and planning (buy a hybrid inverter that allows you to turn off the grid sell feature until you've had it a while and do the math on if you'd sell enough power to make enough money to more than offset the fees for selling power). Plus having a hybrid inverter means I still have power when the grid goes down (my inverter doesn't have to automatically shut off power to the home when it detects grid outage). I do sell power to the grid when I have excess. And I do make about $100 net per year ($100 more in "revenue"/credit than the extra fees I pay). But always the most feasible thing is to use up however much solar power is coming in before I sell power (think of it as the last resort).
For example, in the past $365 days I paid about $44 for buying power on days that my battery stack was charged to 100% the day before. In other words, there's no need to expand my battery stack if doing so at best would save me $44/year. However, I bought $551 in power on days that I didn't charge the battery stack 100% the day before. So expanding my solar capacity (and being more sure to charge the batteries the day before), could save me $551/year. Plus there was $95 worth of power bought because I didn't have enough inverter capacity at the time.
So adding to my solar capacity, which would also mean adding to my inverter capacity, would save me potentially $650/year in purchasing power. And would even more so add to how much excess power I sell to the grid in a year (about 3 times more added to selling power kWh than is reduced in purchase power kWh). But the extra selling would net only about $400 per year. (If I purchased as many solar panels as an extra inverter could allow, which is what I'd do if I bought a 3rd inverter anyway.)
That's the kind of math we have to do for those of us decentralized solar users in states that don't do net metering.