Extensive use of net-metering in Crete’s region public buildings

Abstract

Net metering and zero feed-in are two different methods used in photovoltaic (PV) installations to manage the excess energy locally produced by consumers. Net metering allows the energy generated by the PV system to be fed back into the grid, and the excess energy is credited to the owner’s account. Zero feed-in, on the other hand, involves the use of an inverter that reduces the amount of energy exported to the grid to zero, while still allowing the PV system to generate power for self-sufficiency use. This paper examines the advantages and disadvantages of both net metering and zero feed-in systems, whereas proposes an algorithm for optimal dimensioning of PV considering the relevant load profiles of each examined load demand. The analysis considers factors such as self-sufficiency and rejection of PV production. The results of this study can help stakeholders to make informed decisions when they are obliged to use a zero feed-in scheme for their PV installations.