Part of the issue is government changing rules/regulations around solar in some states. California for example. It used to be that if your panels generated way power power than you used, that extra power would be sold back to the power company for credits, then when winter comes and your panels don't produce as much you use those credits for power and it evens out. I've heard that now when they buy back the power it's way below market rate, and when you want to use your credits in winter you're still hit with certain non-bypassable fees per kw/h.

In other words, prior if your panels covered 100% of your power usage, your bill was practically nothing (a smaller service charge). Now even if your panels cover all of your use, you still pay the power company like 5c/kwh or something.

It's no surprise that people don't want to buy panels when you still have to pay the power company. Anymore panels are really only useful if you're 100% off grid and combine them with batteries.