The transition toward sustainable mobility in Indonesia has placed electric vehicles (EVs) at the center of attention. Researchers and environmental experts are now focusing on Life Cycle Assessment (LCA) to understand their true carbon footprint. This analysis covers all stages, from raw material extraction to final disposal [3].

Understanding environmental impact requires a comprehensive approach that goes beyond mere tailpipe emissions. We must deeply examine global supply chains and local energy conditions. This article explores how electric vehicles interact with Indonesia’s energy ecosystem.

The assembly process of electric vehicle battery modules in a precise, high-tech industrial environment. — Image created by AI

Upstream analysis: nickel extraction and manufacturing

Indonesia plays a strategic role in the global battery supply chain due to its abundant nickel reserves [2]. However, this upstream phase brings significant environmental challenges. Large-scale nickel mining often triggers deforestation and land-use changes in regions such as Sulawesi and North Maluku.

Refining technologies such as High-Pressure Acid Leach (HPAL) and Rotary Kiln-Electric Furnace (RKEF) are highly energy-intensive. Currently, many smelters still rely on coal-fired power plants [2]. This creates a high initial emission burden, often referred to as a carbon debt before the vehicle even hits the road.

Operational phase: the challenge of the national energy mix

The energy efficiency of electric vehicles far exceeds that of internal combustion engine (ICE) vehicles [3]. Electric vehicles are capable of converting electrical energy into motion with an efficiency of 70-80%. Conversely, conventional engines only have an efficiency of around 15-20%.

However, these environmental benefits are highly dependent on the source of electricity used. The IEA country profile for Indonesia shows that the national energy mix is still dominated by coal [1]. Nevertheless, studies show that the use of EVs in Indonesia still produces lower CO2 emissions compared to gasoline or diesel vehicles in the long term [4].

Decarbonization strategy through energy transition

The potential for emission reductions from electric vehicles will increase in line with the acceleration of the new and renewable energy (EBT) mix. The Indonesian government, through the Electricity Supply Business Plan (RUPTL), continues to strive to increase the portion of clean energy. The integration of electric vehicles and government incentive policies in Indonesia is a key factor in accelerating this adoption.

Environmental experts emphasize that transport electrification must go hand-in-hand with the decarbonization of the power grid. Without a clean energy transition, the efficiency of electric vehicles will be hampered by the carbon intensity of existing power plants [3].

End-of-life management and circular economy

Managing used batteries is a crucial challenge for environmental sustainability. Lithium-ion batteries that have reached the end of their service life contain heavy metals that can become hazardous waste if not handled correctly. Therefore, research on recycling critical metals from electric vehicle batteries is highly relevant today.

Effective mitigation strategies include two main approaches:

  • Repurposing used batteries (second-life) as Battery Energy Storage Systems (BESS) to stabilize the power grid.
  • Developing a hydrometallurgical recycling industry to recover valuable metals such as nickel, cobalt, and lithium [2].

This circular economy approach not only reduces waste but also lowers the need for mining new raw materials. Analysis of Indonesia’s energy and nickel transition emphasizes the importance of regulations that support a safe and efficient recycling ecosystem.

Implications for researchers and policymakers

For the research community, the main challenge lies in the accuracy of local emission data. We need continuous monitoring of the carbon footprint of smelters and the efficiency of the PLN grid. Accurate data will help in formulating targeted policies [4].

The transition to electric vehicles is not just about replacing combustion engines with electric motors. It is a systemic transformation involving the energy, mining, and waste management sectors. Cross-sector collaboration is essential to ensure that electric vehicles truly become a solution to the climate crisis in Indonesia.

Conclusion

Life cycle assessment shows that electric vehicles in Indonesia have a clear emission advantage over conventional vehicles, despite still facing challenges from coal dependency. This advantage will continue to improve in line with the decarbonization of the national power grid.

Future focus must be directed toward sustainable mining practices and the development of battery recycling technology. With strategic steps, Indonesia can optimize the environmental benefits of electric vehicles for a greener future [3].

More Information

  1. LCA (Life Cycle Assessment): A systematic methodology for evaluating the environmental impact of a product or service throughout its life cycle, from raw material acquisition to final disposal.
  2. Well-to-Wheel: An emission analysis that covers the entire process, from energy production (Well-to-Tank) to energy use by the vehicle on the road (Tank-to-Wheel).
  3. Cradle-to-Gate: A life cycle assessment boundary that includes processes from raw material extraction to the product leaving the factory gate before distribution.
  4. Hydrometallurgy: A technique for extracting metals from ore or battery waste using aqueous solutions, which is considered more environmentally friendly than traditional pyrometallurgical methods.
  5. BESS (Battery Energy Storage System): Energy storage technology that uses large-scale batteries to store electricity from renewable sources to stabilize the national power grid load.