Dear All,
With a PV system on the roof of the building, we have calculated the predicted annual renewable electricity generation with some PV calculation software like PVSOL or software made available by inverter manufacturers. All give us approximate results around 20000 kWh. Since the energy model for EAC1 has been created with eQuest and since we do not have time to include PV in eQuest model, are results by these software sufficient? Specifically, would the reviewers demand from us exceptional calculation methodology information, which we would be unable to give with these software?
Shillpa Singh
Senior Sustainability ManagerYR&G
131 thumbs up
January 24, 2011 - 11:13 am
Hi Omer
For EAc1, PV generation capacity from a reliable calculation are sufficient. These should be backed by details of PV system size, capacity per panel, and reasonable assumptions to come up with the kWh. This number should also be used for EAc2 credit documentation. If you are using a software, make sure it's an industry accepted calculator and the PV vendor/installer can stand behind the results. For EAc1, you can add this kWH into the form and deduct from the total energy used to obtain total energy cost savings. Most software don't have the capability to model renewable energy system and this methodology is acceptable. You don't have to show a detailed ECM but for the PV generation calculation.