A consortium of Medco Power Indonesia and Fortum Services Oy (Fortum) through PT TJB Power Services (TJB) was appointed by PLN to provide Operation and Maintenance (O&M) service to PLN Tanjung Jati B Unit 1 & 2 – 2 x 660 MW coal fired power plant at Tanjung Jati, Central Java for 23 years starting from commercial operating date at end of year 2006. TJB consistently maintained Zero Accident in the operation of Tanjung Jati B power plant, as well as obtaining Gold PROPER certification from the Ministry of Environment of the Republic of Indonesia.