Raichur Thermal Power Station (RTPS) is a coal-fired electric power station located in the Raichur district of the state of Karnataka, India. It is operated by the Karnataka Power Corporation Limited (KPCL) and was the first thermal power plant to be set up in the state. The power station was commissioned during various periods from 1985 and it accounts for about 40% of the total electricity generated in Karnataka.
The project to construct the thermal power station was finalized in 1978 after an MOU was signed between KPCL and the Karnataka State Electricity Board. TCE Consulting Engineers Ltd., a Tata Group company was appointed as the consultants for the project. The project involved two stages: Stage I, in which Units 1 and 2 were expected to be installed and Stage II, Units 3 and 4. Each unit was expected to have an installed capacity of 210 MW. An area of 300 hectares was allocated for the units. Unit I of the plant was completed in March 1985, with Unit II following in March 1986.
The construction of Unit III was started in 1986 and completed in March 1991 and the Unit IV was started in 1989 and completed in September 1994, thereby completing the Stage II. The total cost of Stage I of the project was Rs. 4,030,000,000 and of the Stage II was Rs. 9,830,000,000. The generators were supplied by Bharat Heavy Electricals Limited and the turbines by Kraftwerk Union AG (KWU) and Mitsubishi. In 1996, a further expansion of the plant was carried out, with an investment of Rs. 15,450,000,000.
RTPS uses coal for generation of electricity. Its daily requirement of coal is about 24,000 metric tons, delivered from Western Coalfields Ltd. and Mahanadi Coalfields Ltd. The coal supplied is sampled using a computerized system and sent to the laboratory for testing. This ensures that the proper grade of coal is used. The plant has also started to use washed coal, due to its lower ash content. The plant's cooling water is pumped from the Krishna river nearby.
The coal is pulverised and fed into furnaces that convert water into steam. This steam runs the turbines to generate electricity. Each unit produces about 5 MU per day and hence the plant can produce 35 MU per day when it is functioning at full capacity.