Develop a list and number of all occupied spaces in the building, noting multi-occupant spaces. The number of individual occupant spaces and multi-occupant spaces should be the same between IEQc6.1 and IEQc6.2.
Especially if your project is very energy efficient, you will probably be able to pay less for green power based on your energy model than you would using the default values from
Running estimated calculations early in the design stage will help to give you a better understanding of how much the credit might cost. Just keep in mind that the cost may change once the energy usage is further defined as part of your calculations for EAp2 and EAc1: Optimize Energy Performance. If you are using an energy model per Option 1 of EAc1, the cost of RECs might change if alterations to the energy model are required after the LEED design review, but the change should be minimal.
Green power prices can fluctuate like other utility prices. If you think prices may rise by the time the project is completed, lock in a low price by signing a contract anytime prior to occupancy.
It may be easier and more cost-effective to use rapidly renewable materials that are not finish materials—for instance, strawbale construction, cotton batt insulation, or composite agrifiber