Designing and installing a photovoltaic power plant using the PV SOL premium program package will demonstrate the importance of the photovoltaic power plant as the main source for the production of electricity from renewable sources (energy from the Sun), especially for self-supply and energy-independent households. Theoretical photovoltaic systems, photovoltaic conversion, and photovoltaic system elements such as photovoltaic cell, photovoltaic module, batteries and exchangers will be covered in the paper. The work of the program package PV SOL premium will be explained and shown in detail. It is a program that serves for simulation and analysis, design and installation of photovoltaic systems, and enables the optimization of parameters for better utilization of solar potential, in order to ensure maximum energy efficiency and economic profitability. The paper will describe the process of developing a photovoltaic power plant project in PV SOL using the example of the "Family House Antičević" project, and will explain the activity schedule for obtaining permits (the process of realization of a solar power plant) in order to put one solar power plant into operation at the roof of the family house.