I've taken a number of classes on installing my own solar system.
The economics are not there for me to do it myself.
Now that net-metering has taken over all 50 states, there is no more profit for the home owner.
Its a credit that's rolled over each month, and the credit expires at 1-year.
Payoff includes upfront costs, maintenance and upgrading.
Depending on what you want to supply, 25-50-100% grid, payback can be 15-25 years.
That might or doesn't include long term maintenance.
Watching technology, systems are being upgraded all the time, plus wind technology is improving.
New today will be 10% less efficient tomorrow thanks to science.
One of the basics we covered in classes was about maximizing your property before doing any type of alternative energy system.
Caulk everything, redo windows, weatherstrip doors, add insulation, power strips to shut off appliances, unplug everything to remove ghost usage.
Run a ceiling fan more vs the house AC, upgrade to an electronic thermostat.
Doing minor things can save you ~25% before you do anything related to a system.
Many think it will add to your house value.
New buyers might like the savings, but hate the maintenance.
Unless the EV system is in great shape, its like buying a house with an old pool..
Tax credits for a system are useful, if you have a contractor do all the work.
Do it your selfer might not get the credits, since a licensed company didn't sell you the hardware or do the labor.
Check your state laws before doing anything.
I'm not saying its bad, I'm saying its not for everyone.
It all depends on your lifestyle and current usage.