Researchers behind a techno-economic evaluation of vitality communities in Italy and Portugal say that collective self-consumption is a extra profitable resolution than particular person installations.
A world analysis group has carried out a techno-economic analysis of vitality communities in Italy and Portugal beneath their respective regimes for self-consumption.
The researchers additionally seemed on the affect of post-pandemic insurance policies and recognized the optimum PV system designs for 4 completely different group configurations within the two nations, based mostly on monetary incentives.
Italy has additionally been granting two completely different fiscal credit for the set up of PV and storage initiatives within the body of constructing renovation initiatives, the so-called Superbonus and Ecobonus, masking 110% and 50% of the venture prices, respectively.
In June 2020, the Portuguese authorities allowed particular person prosumers to not pay 50% of the CIEG, part of the electrical energy tariff paid by Portuguese customers that represents 29% of the worth of low-voltage electrical energy, and vitality communities to not pay 100% of the CIEG.
The Portuguese authorities are additionally providing rebates for PV techniques with or with out storage that cowl as much as 85% of the funding as much as the restrict of €2,500 per venture.
The evaluation confirmed that utilizing the Superbonus favored the smallest techniques, whereas the Ecobonus was extra favorable to the biggest ones. That is because of the decrease price of smaller techniques, through which the financial savings come primarily from self-consumed vitality.
On this case, the configuration that maximizes self-consumption is probably the most useful. Moreover, the incentives provided cowl nearly the whole price of the system. If batteries are included, the optimum system is the one with the smallest battery as a result of it’s the most cost-effective configuration.
This method is because of the greater price and shorter helpful lifetime of batteries in comparison with photovoltaic techniques, which require eventual substitute. Subsequently, utilizing smaller batteries is the best technique to keep up the financial viability of the venture.
The evaluation in Portugal revealed that the optimum system for all household varieties with out storage was the smallest, whereas storage situations usually resulted in unprofitable initiatives.
In line with the authors of the analysis, “a sensitivity evaluation ought to be carried out to find out which Portuguese incentives can be applicable to advertise storage tools.”
Simulations of vitality communities for all households confirmed that, in Italy, one of the best configurations encompass households performing as producers with greater PV capacities and smaller batteries. In contrast, in Portugal, insurance policies favor smaller PV techniques with out batteries, resulting in optimum configurations the place households are solely customers.
The primary conclusion of the research is that, for each nations and the 4 household schemes, being a part of an vitality group is extra economically viable than being in a regime of particular person self-consumption. It’s because particular person households proceed to prioritize self-consumption and private financial savings, whereas promoting their extra vitality at a extra favorable value than they’d obtain from the grid.
The lecturers printed their findings in “Techno-economic evaluation of self-consumption schemes and vitality communities in Italy and Portugal, printed in Photo voltaic Power. The analysis group included scientists from the College of Lisbon in Portugal, in addition to Italy’s Eurac Analysis and the Polytechnic College of Milan.
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