P Power quality disturbances cause several problems to consumers who require a level of high quality electric power for industrial processes. For that study was performed which aims to find out any interference, measurement parameters, effects and risks posed, due to interference, and the solution, of problems - power quality problems in the cement industry PT. Tonasa, South Sulawesi. From the measurement results, PT Semen Tonasa just having a bit of power quality problems. Only the harmonic voltage distortion of the voltage and current conditions do not meet the standards. However, while the measurements in the frequency, power factor, THD of each phase voltage and current THD of each phase, the two-point measurements showed that no problem occurs because in good condition (standards). To handle problems that occur, can be carried out remediation efforts such as using a constant-voltage transformers (CVT) and the use of Uninterruptible Power Supply (UPS) to investigate the problems of voltage and the load on each phase, replacing the connection, and the regulator to fix the problem currents.