An electrical grid functions as an energy distribution system and transports electrical energy through several power lines. Since the grid cannot store energy anywhere in the system. We have several customers who consume megawatts of energy at any given time. At the same time, we have dozens of power plants producing exactly the right amount of energy to meet all that demand. And there are all the transmission and distribution lines that send energy from power plants to customers. There are times, when there is a peak demand for electricity, when the interactive nature of the grid puts the entire system at risk of collapse. For example, the electricity grid is almost at the limit of its maximum capacity. Once the electrical grid exceeds that capacity, the power plant suddenly goes offline. This happens in the scenario where the demand for electricity exceeds its supply. causes the system to fail. once the system fails, its entire load has shifted to nearby transmission lines. Then they overload and fail in the same way. This only makes the situation worse and eventually dozens of plants go offline. This leaves several people without electricity and sometimes these blackouts could be very costly. One way to solve this problem would be to reduce peak electricity demand by improving the building's central plant system. To do this, we will maximize the efficiency of the chilled water system. While to obtain the most economical chilled water system solution it is necessary to adopt a whole system approach. The chiller consumes a lot of energy and should be chosen appropriately or a combination of steam/electric chillers to reduce the energy consumption of the facility. All chiller components also play a huge role in improving the efficiency of chillers. City College of New Y...... middle of paper ......reduce operating prices by switching to hybrid refrigeration systems. Using a high-performance chiller will not only reduce campus electrical costs, but will also change the energy consumption composition of the chilled water system. Supporting components of the chiller system, such as boilers, water pumps, cooling towers, and secondary loop, can make up a larger percentage of the chilled water system's energy consumption. Furthermore, by improving the power consumption of each component, the overall cost of the system can be improved. To optimize the cost of the system, we need a global view of the operation of each part of the refrigeration system. All elements of HVAC systems are connected and dependent on each other. This covers everything from refrigeration and boiler systems, through distribution circuits and into buildings. And the operator's choices in the plant will have an effect on the overall construction operations.