Solar Panels can add value to a home because having solar panels installed on a home can reduce the homes utility bills.
If you live in an area with high electricity costs then having the solar panels on your home can increase the value of the home by 4 to 8 percent.
Some people will pay more for a home that has solar panels on it already because then they don't have to pay upfront for the solar panel installation.
I sold a home I had for an additional $50,000.00 after I had solar panels installed and the home sold much quicker than houses without solar panels.
So yes while solar panels can cost some money upfront you can recoup those costs if you sell your home in the future.
Solar panels means that you can have electricity also in your home when the power is out so that is an additional value and benefit of the solar panels.