Abstract
The article discusses the general problem of the use of renewable energy in Poland. The boundary conditions justifying the economic basis for the construction of photovoltaic power plants producing energy for the own needs of customers were determined. The research method uses a standard model of cash flows where revenues are avoided costs of purchase and distribution of energy due to the production of electricity from PV for own needs. The article also presents technical aspects related to the construction of photovoltaic micro-installations. Particular attention has been paid to the protection of photovoltaic installations, the hazards resulting from the operation of photovoltaic installations, and health and safety at work during design and implementation.