So $18.3 million price tag for install....projected savings were $550K/yr...array has 30 yr life span:
18,300,000 / 550,000 = 33 yr break even point.
So instead of paying $16.5M over 30 years (550,000/yr) we (government) decided to pay (spend out tax money) $18.3M right meow (American Recovery and Reinvestment Act) for a project that was destined to fail unless better than expected results were obtained?
Or you could use several hundred thousand dollars a year with no return on investment
30 years * $500K = $15M in losses
so which is really worse? spending $600K over 30 years or $15M?
I don't like a lot of these "green" projects, but this makes economic sense