EN 
PT_BR 
Contrary to what was expected, the payback time for photovoltaic systems in the country fell even after the new distributed generation rules were introduced (Law 14,300/22).
The main factor that contributed to this result was the reduction in equipment prices, which fell by 17% in the first half of 2023 compared to the same period last year.
The conclusion is contained in the Strategic Study of Distributed Generation, prepared by Greener, a market intelligence company specializing in the sector.
The return on investment time is an important indicator of the competitiveness of photovoltaic systems in Brazil. The shorter the period, the more attractive it is to invest in your own energy production.
“We had an improvement in payback conditions and this happened in almost all states”, said Greener CEO, Márcio Takada, during the study presentation event in São Paulo, this Wednesday (20).
To reach this conclusion, Greener analyzed two scenarios, establishing a comparison between the payback of GD 1 (before law 14,300 came into force) and GD 2 (after the law). GD 1 are the systems that had the Access Opinion before January 7, 2023 and GD 2, after that date.
Residential systems
In the base case of residential systems (4 kWp), there was a reduction of 15% in payback under the conditions of the GD 2 scenario. A residential system in São Paulo, for example, which previously had a payback of 4.7 years, fell to 4 years in the GD 2 scenario in 2023.
Scenario 2023
Scenario 2022
Trading Systems
In the case of a commercial system (50 kWp), there was a 20% reduction in payback in the GD 2 scenario compared to GD 1. In Minas Gerais, for example, the return on investment for a commercial system fell from 3.6 years to 2 ,7 years.
Scenario 2023
Scenario 2022
Industrial systems
The same happened with industrial systems (300 kWp), whose payback fell by 13% in the post-14,300/22 scenario. A system in Bahia went from 6.2 years to 5.4 years of return period.
Scenario 2023
Scenario 2022
