The purpose of this study was to conduct a review of energy audits in the lighting systems and air conditioning of building E and F of the Cilacap State Polytechnic. The results of the calculation of energy audits in lighting can be used as a guideline to make efficiency in the use of electrical energy. The initial step taken in this study was to look for primary and secondary data. Primary data is obtained by making direct measurements in all building rooms E and F. Secondary data obtained

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... relevant agencies such as the Cilacap State Polytechnic building data; energy demand data from the Energy and Mineral Resources (ESDM) Office; and data on electricity consumption from the National Electricity Company (PLN). The data is then processed to obtain the value of Energy Use Intensity (IKE) and can also be used as a guide for carrying out measures in energy efficiency. Based on the calculation and processing of the data obtained, the energy consumption of buildings E and F is 3,259.82 kWh/month and 3,650.96 kWh/month. The results of the energy audit calculations performed on the building lighting systems E and F with a building area of 287 m 2 and 399 m 2 have a building IKE value of 11.37 kWh/ m 2 /month and 9.16 kWh/m 2 /month. Based on the IKE criteria index, it was found that building E and F of the Cilacap State Polytechnic were included in the criteria of efficiency. Energy efficiency is the ratio between energy output and total energy input. This ratio is always related to specific situations. Efforts can be made to determine the level of energy efficiency of a building through the energy audit process in a building. Energy audits are needed to determine the amount of electricity needed by a building. In the audit, process innovation is needed so that the calculation of electrical energy can be known quickly and can save costs. These innovations can be applied by designing software that is maintainable, dependable, and useable [5] . The Government of Indonesia has issued Presidential Regulation No. 22 of 2017 concerning the National Energy General Plan which mandates conducting energy conservation activities, especially in the field of energy-saving by implementing energy management and audit programs from the energy user side. The issuance of SNI 03-6196-2000 has also regulated energy audit standard procedures for buildings While air conditioning will always be related to how to regulate the air condition in a particular room, air conditioning will positively always be related to the regulation of air temperature and also the regulation of humidity and movement of room air including air filtering to get air free of pollutants. In practice, air conditioning is divided into two, namely: Air conditioning based