Solar Panels, for CIVIL discussion

So my panels are on pace to pay for themselves in 5.5 years. If I did NOT take the tax credits my payoff time frame would be 14 years. With my panels guaranteed to produce over 85% of their max energy after 25 years. How exactly is the solar industry NOT able to stand on it's own as some have claimed? And that's with me buying American made stuff. Had I bought CCP panels the payoff for me and you folks would be much sooner subsidized or not.