The problem is that you don't necessarily save money wen you run through the numbers, so making the argument that those options should be installed to commercial/public building managers is difficult.
Because the installed cost for solar, LED lights, more efficient equipment etc. is high, government energy cost estimates are overly optimistic, and the government reports an artificially low value for inflation, such options are usually either eliminated at the life cycle cost analysis phase due to long payback periods, or eliminated at the value engineering phase of building design.
I also don't really believe that significant numbers of people are willing to make the capital investment in things like solar without more government incentive. I think that the a couple of things about the nature of the current economic trouble makes people less likely to invest in such things:
1. With the drop in the housing market, all of those home improvements they considered financial investments aren't going to pay back in the term they were expecting.
2. The focus of the economic problems has shifted away from energy and towards other sectors of the economy. If energy was the big problem and everything else seemed relatively secure, I'd believe that people are willing to make the investment. With everything in general a bit shaky, I don't believe that enough people are willing to make such investments.
And with all of this boiling down to money to make capital investments in things like solar panels or better insulation, I think the government is going to be hamstrung in its ability to play its role in encouraging such things because it wasted way too much money lining the pockets of the fraudsters in the financial industry.
Edited to add:
There's also a lot of crap coming on to the market that is advertised as "efficient" and "sustainable" which is likely to siphon off money that could be used towards actual sustainable pursuits. I just saw something about sustainable IT and workstations...overpowered workstations with oversized monitors for administrators is not sustainable technology, no matter how many times they tell themselves 24 inch monitors or the ability to surf 300 webpages simultaneously while running Microsoft word are a necessity.