The proliferation of electronic and automotive goods has resulted in the high production of emission recently. Greenhouse gas emissions are what trigger global warming. Considering this phenomenon, all countries have concentrated on overcoming this problem, including Indonesia. The Indonesian Government is committed to participate in reducing greenhouse gas emissions. This commitment was strengthened by the issuance of Presidential Regulation No. 61 of 2011 concerning the National Action Plan for Greenhouse Gas Emission Reduction (RAN-GRK), which is a working document containing efforts to reduce greenhouse gas emissions in Indonesia. This Presidential Regulation has been followed by the issuance of Presidential Regulation No. 71 of 2011 concerning the Implementation of the National Greenhouse Gas (GHG) Inventory. [103-1]

PTBA as a state-owned company has a big responsibility for this problem. Thus, the Company realizes its commitment through formulation of policies in the form of Bukit Asam Management System guidelines related to air pollution reduction policy. [103-2] The steps taken by PTBA to reduce greenhouse gas emissions are as follows: [103-3, 305-5] [6.e.4) b)]

Zero emission CHF surveillance is a digitalization technology that aims to reduce hours of damage or obstruction to the Coal Handling Facility (CHF) by using the communication network of the CHF 1, CHF 2, CHF 3, and CHF 4 mine control systems that have been integrated with the intranet domain as seen in Figure 5.1. The CHF Monitoring and Control System replaces the manual monitoring system using a vehicle to one without a vehicle. This program has the capacity to reduce the use of BBM-Solar by 42,156 liters/year, which is equivalent to the potential for greenhouse gases of 112 tCO2 e/year.

During the reporting year, PTA has measured the greenhouse gas emissions produced for both coverage 1 (direct) and coverage 2 (indirect). The main source of greenhouse gas emissions in scope I is fuel combustion, while indirect sources of greenhouse gas emissions include the use of electricity. The calculation is carried out based on the volume of fuel and electricity usage using the following formula:

Remarks: cope-1: gross direct GHG emissions from operations owned or controlled by the organization (including mining, energy use, waste treatment and chemical processing) of the PTBA Business Unit which are included in the limits of this report.

Ozone Depleting Substances (ODS) Emissions [305-6]

The use of goods or materials that deplete ozone cmay result negative impact on the environment and have a significant impact on climate change. Ozone Depleting Substances (ODS) are chemical compounds that can potentially react with ozone molecules in the stratosphere. ODS is commonly found in air conditioning machines, refrigerators, and fire extinguishers. The use of ODS will lead to depletion of the ozone layer resulting in environmental degradation, limited sources of clean water, damage to the food chain at sea, decreased agricultural production and so on. PTBA realizes that there are very high environmental risks to the use of ODS. PTBA fully supports government policies to tighten the use of ODS. [103-2]

PTBA has conducted mapping in mining and office operations to determine whether or not the use of ODS is available. Mapping results indicates there is use of ODS. The indicated use of ODS is in the use of office AC refrigerants & residential and light fire extinguishers (APAR). Furthermore, based on the initial commitment to reduce greenhouse gas emissions, including ODS emissions, PTBA has a policy to reduce ODS emissions, namely: [103-3, 305-6]

1. Using refrigerants for air conditioning that are environmentally friendly. The absolute result of emission reduction in 2020 from replacing ODS-CFCs in office & residential AC refrigerants by 15,760 tCO2e.
2. Replacement of ODS-Halon 1211 in a light fire extinguisher (APAR) with an absolute result of emission reduction in 2020 of 5,840 tCO2 e.

Meanwhile, in the production process, there are ODS emissions of 0 (in metric tons equivalent to FCF-11).