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Abstract(s)
At present, a worldwide paradigm shift has become apparent, with more and more consumers consuming the energy generated by renewable energy sources (RES) systems, such as wind
or photovoltaic (PV) energy, sometimes benefiting from appropriate incentives by individual governments. Consequently, it is necessary to carry out technical–economic assessments to understand the
evolution of the viability of RES investments. Within the framework of an intelligent network control
environment, the smart grid (SG) concept is associated with this model, and is an important tool in
the management of energy distribution networks. This article aims to make a further contribution to
this issue by analyzing the economic feasibility of investing in residential consumers, considering
different RES configurations. Scenarios covered in this study include: “inject all on the low voltage
network/consume all on the low voltage network”, self-consumption, net-metering, and storage
systems. The economic study results in this article show that self-consumption with and without the
injection of excess electricity into the grid is quite attractive. The bi-hourly tariff was found to be more
profitable than other tariffs. Variable tariffs (bi or tri-hourly) are more profitable than fixed tariffs. It
is also concluded that investment in storage systems is not yet an economically viable solution due to
the high price of energy storage.
Description
Keywords
Residential PV systems Residential wind systems Self-consumption Battery systems Economic evaluation
Citation
Camilo, F. M., & Santos, P. (2023). Technical-Economic Evaluation of Residential Wind and Photovoltaic Systems with Self-Consumption and Storage Systems in Portugal. Energies, 16(4), 1805. http://dx.doi.org/10.3390/en16041805