On the one hand, solar electricity generation systems are a long-term investment, but in places where there is no electricity and it is expensive to attract it, solar panel systems pay off immediately, because they immediately provide all the possibilities that available electricity provides - the Internet, the ability to charge computers and other smart devices, operate electric tools, use refrigerators, freezers, air conditioners and other devices.
All this can also be done by running a generator, but it involves noise, smell and maintenance costs. Solar energy is quiet and clean energy. The generator can supplement solar energy systems both permanently and as a backup power source.
When installing photovoltaic solar systems in places where there is already an electricity connection and electricity consumption, it pays off the fastest to use up solar energy immediately - during daylight hours, for example in production plants, offices, institutions. Such solar energy systems will pay for themselves in less than 10 years, but if the price of electricity and its supply increases (as is the case with a fluctuating electricity market), the payback time can decrease to 7 or even 5 years.
Also, if the main electricity consumption of the building is in the evenings and mornings, as is usually the case in apartment buildings or households, the PV panel systems will pay for themselves in about 10 years. Considering that quality solar panel systems are built to last many times longer, solar energy is a good investment that will definitely pay off.