Economics and policy implications of residential photovoltaic systems in Italy's developed market

This work quantifies the economic advantage of a 110% versus a 50% subsidized tax deduction for installing new residential PV systems in Italy using net present value as an indicator. The results show that the percentage of self-consumed energy significantly impacts the profitability of these systems. The break-even point analysis identifies the values at which profitability occurs depending on different policy scenarios. In addition, it is pointed out that in some contexts, the economic benefits to the state are greater than those to the consumer in the scenario involving a different selling price.