One little known fact about ol' Alf, is that he held CPA certificate # 5502 in the state of Florida. The Florida licensing board is trying very hard to deny this fact, but it is true. Sadly, they revoked it some years ago due to non-payment of license fees. Even sadder is that's the only way you can get them to cancel a professional license. There's no provision in the law for you to voluntarily "surrender" it. You have to wait 10 years then they "censure" you for non-payment. Duh-h-h-h-h-h.
While in school, my professors and I had some lively discussion about non-profit accounting. They always won, because they owned the grade book. I however, to this day feel I had some very valid points.
Non-Profit accounting would, in this situation say, that the park service showed a net gain of $700,000 for this year and a net gain for the next 28 years (life of the system) of $25,000/year for the saving in electrical costs. Overall, by convoluted accounting practices, a governmental bean counter, who probably took the CPA exam 10 times and failed, would say that over the life of the solar system the park service gained $1,400,000. How sad, they traded their $700,000 for $700,000 and at the end of 30 years, they'll have......nothing.....except a broken down solar system with environmental hazardous batteries to dispose.