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Waste Heat Recovery Power Generation (WHRPG) technology is a technology that produces electrical energy from the flue gas from the operation of a cement factory that releases CO2 and converts it into electrical energy in the cement industry. Utilization of the generated electricity can be used as a supply of factory electricity needs such as lighting, equipment and various other facilities. Since 2014-2017 until now the operation of the WHRPG in the tuban factory after several times setting hot gas on the conversion system only able to produce electricity capacity of 28.6 MW is still far from the planned capacity target, this requires the right operating strategy in order to achieve electrical energy capacity 30.6 MW. Efforts to increase the production capacity of electricity generation from the utilization of hot flue gas in terms of engine performance readiness aspects of steam power plant technology need to be carried out operational planning and maintenance using the Inspection, Small Repair, Medium Repair and Overhoul (ISMO) implementation method through Total Productive Maintenance. (TPM) technical repairs on WHRPG power plant equipment such as damage to pumps and hot gas settings in boilers and other components are repaired in order to get better performance so that the energy produced can reach 95% at the performance ratio value from the predetermined initial capacity. It is known and can be improved on the value of OEE (Overal Effectiveness Equipment) by implementing total productive maintenance on all power generation equipment so that the combination of production and maintenance together can increase the production of 30.6 MW of electrical energy can be realized. [ABSTRACT FROM AUTHOR]