Sustainable Environmental Management to Support Operational Excellence and Provide Added Values to Communities and Environment in PGE Area Lahendong

Abstract

Pertamina Geothermal Energy (PGE) Area Lahendong is the only geothermal company in North Sulawesi Province that conducts business from upstream and downstream. Currently PGE Area Lahendong producing 120 MW from 4 x 20 MW units in the form of steam supply to PLTP owned by PT PLN (Indonesian national electrical company) and 2 x 20 MW in the form of electricity supply (PLTP is owned and operated by PGE Area Lahendong). In managing the geothermal energy system, PGE Area Lahendong implements an Environmental Management System based on ISO 14001: 2015 international standards and the 7th edition of the International Security Rating System (ISRS). The PGE Area Lahendong performances proven by its company achievement as the first geothermal company to get Level 5 based on an assessment conducted directly by DNV GL as the ISRS license holder. In addition, according to regulatory requirements in Indonesia, PGE Area Lahendong was assessed for its environmental management performance by the Indonesian government through the PROPER (Program Penilaian Kinerja Lingkungan) program that is conducted annually by the Ministry of Environment and Forestry, Republic of Indonesia. Since 2015, PGE Area Lahendong performance continues to increase for each parameter and aspect assessed through the implemented programs. The performance in 2017 is shown by the success of energy efficiency up to 6,539.38 GJ, reduction of emissions and greenhouse gases reaching 221.61 tCO2, hazardous and toxic (LB3) waste management of 35.81 tons, non-hazardous and toxic waste management of 0.28 tons, and water efficiency of 39.061,19 m3. Besides that, while implementing close system reinjection, all produced water (brine and condensate) is re-injected into reinjection wells. Community development is also carried out optimally in order to create harmony and increase the independence of the community around the location. So the presence of PGE Area Lahendong brings more benefits to the surrounding community and maintains and even improves the quality of the environment.