On-Site PV (Photovoltaic) Production Utilization Calculator

Only applies to PHIUS+ CORE (2018) & Phius CORE 2021 projects. An estimate of coincident production-and-use of energy from on-site renewable energy systems (such as PV) may be included in the Net Source Energy calculation for Phius Certification. The amount of source energy that may be offset by a renewable electricity source depends on the utilization factor. This can be calculated by determining the coincident production-and-use fraction of the generation. If using PV without battery storage, use this calculator to determine your climate specific onsite utilization factor.