Greenbuildingslikethisaren't necessarilycost-efficientfor theinvestor, butitdoesproducemuchlesspollutionthan that causedbyenergy production throughfossilfuels.
Conservative Democrats who were just elected do not want to risk alienating their constituents by appearing too green, and it remains unclear whether any legislation would even be signed into law by a pro-industry, outgoing president.
It is similar to the PUE rating (Power Use Effectiveness) developed by The Green Grid a few years ago, but it arguably is more targeted toward measuring power consumption and actual operations.