PTBA uses several energy sources that are according to their needs. To operate machinery and heavy equipment, the Company utilizes diesel fuel oil, while electricity is used as an energy source for lighting, moving electronic devices and so on. These are all produced and source from PLN, where electricity are provided from standalone PLTU’s, as well as from solar power plants. This highlights the Company’s implementation and commitment on the importance of developing contemporary renewable energy sources.[103-1, 103-2]
The company realizes that the availability of electricity and fuel is becoming increasingly limited. Therefore, the Company has set out efforts and improving efficiencies as a counter measure. In order to improve energy efficiencies, the Company has established an Electricity and Fuel Energy Efficiency Resource Policy. The Company has an energy manager that has been certified by the National Professional Certification Agency (BNSP)/LSP-HAKE. This is supported by grassroots organizations and human resource unions that are competent in implementing this policy. The Company also set out strategic plans, goals and timelines. The Company also monitors the implementation through thorough internal and external energy audits. [103-2]
The Company has implemented more intensive Electricity savings initiatives in its main office and across all its branches. As such, the Company has identified the primary energy consumer in the Company’s business processes, these are made up of mining equipment, transportation facilities, and infrastructure, including the Company’s offices and housing.
Additionally, the Company undertakes energy efficiency efforts in Main Mining Equipment (ATU), transportation vehicles (dumptruck, personal vehicles) and Offices too. These offices comprise of State Employee Housing through Energy Management activities and technical approaches. To reduce the Company’s dependence on electricity from the PLN network, the Company began operating electricity with the Tanjung Enim Mining Mouth Coal Fired Power Plant with a capacity of 3x10 MW. This Mine Mouth generator has the capability to reduce electricity consumption from the network and reduces the use of public electricity channel.
In 2018, PTBA UPTE successfully implemented the Electrification Program by utilizing 7 (seven) units of Shovel Electric and 40 (forty) units of Hybrid Dump Truck with the achievement of an energy saving value of 218,255.59 GJ which meant a decrease in GHG Emissions of 9,782.58 Tons of CO2e. [103-3]
Notwithstanding the aforementioned initiatives, the Company also implements Engine State Monitoring program and Bukit Asam Mining and Information System (MISTER BA). Through the Innovative Engine State Monitoring Program, the Company was able to reduce fuel consumption by 52,017 liters until June 2019. This is achieved through utilizing Dump Trucks Low Idle Dump Truck Engine State, which was not possible previously. These changes have yielded a reduction in fuel consumption by 3,954 GJ per year (1 liter of fuel ≈ 0.038 GJ) which is equivalent to a decrease in emissions of 277.7 tCO2e (1liter of fuel ≈IV - 160.00267 tCO2e). and implementation of energy conservation in the Good Mining Practice.