There is great potential for generating solar energy using unused space on roofs and vacant lots around buildings. Small amounts of energy generated by each individual household, industrial building, commercial building, or any other type of building can be used to partially meet the needs of the building's residents, and the surplus, if any, can be fed to the grid. To use the existing roof space of buildings, SPV systems on the roof of buildings can be installed to replace DG generators installed to provide the minimum load required to operate during load shedding. TSTU has a large unused roof area from both residential and office buildings. Therefore, it has a huge potential for generating solar energy by installing a grid-connected Solar system on the roof. We can reduce a large amount of bills by implementing a solar power plant. The government has also launched various solar energy incentive schemes, this article provides a brief overview of rooftop photovoltaic and small-scale solar generation systems, and discusses various government schemes. Since TSTU has a large scope for this scheme, so the calculation of the design capacity was made for the technological College and one residential building. A method has been developed for calculating the capacity of Autonomous solar power plants and its elements, which allows us to take into account changes in the load during the day and thereby accurately determine the required capacity of the battery and eliminate unjustified overestimation of the power of power plant elements and increase the cost of the Autonomous solar power plant itself.

The main principles of energy saving at public catering enterprises are considered in this article. The main criterion for this analysis is the consumption of electric energy by catering enterprises, which averages 80-90% of all energy consumption. Most of this equipment is non-adaptive and non-automated, its installed capacity is often several times more than the actual required capacity, and the average load is on average 30-60%. In this regard, the research and wide introduction of energy-saving technologies and devices in catering enterprises is an urgent task. The article also analyzes the possibilities of reducing the specific consumption of electricity and the functioning of devices at catering enterprises.