Here in NYC, most costumers choose to purchase supply from a third party source, such as an ESCO, that is independent of their utility provider. Many of these suppliers have a green option, that will allow you to purchase 100% wind, as an example. Now assuming the owner has a PPA program in place with the third party to supply 100% of their consumption with green energy, the agreement is good for 2 years, and that the program is Green-e certified, will this satisfy the requirement of credit? I was hoping yes, but based upon the discussion here, it seems as though, you must pre-purchase 2 years of REC's based upon your EAc1 calculations, which may have little to do with your actual consumption. Sounds like a very expensive proposition.