Going Green to cut bills

This makes so much sense - Homebuyers Go Green to Cut Bills . It's a shame that builders marked it up for a stiff premium for so long. Of course if it was required by building codes, that would eliminate the premium. The problem is the technology for a green building is still developing. Some people put in using renewable and recycled materials as part of having a green building. My thought is reducing the immediate energy costs, but then the argument is you need to look at the total life time energy usage.