The world is currently grappling with an escalating fuel crisis, as demand continues to surge, leading to rising prices and concerns about energy security. In this context, it is imperative to explore innovative solutions to address this crisis. One promising avenue lies in harnessing the power of microorganisms, such as bacteria, to produce sustainable and renewable energy. This approach holds the potential to not only alleviate the fuel shortage but also mitigate the adverse effects of increasing energy costs. Recent reports from the World Energy Outlook 2022 and the International Energy Agency (IEA) underscore the urgency of this issue, making it imperative for India and the world to delve into the realm of microbial fuel technology.

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Use of microorganisms in making fuel:

  • Microbial Fuel Cells: Microorganisms, especially bacteria, play a pivotal role in microbial fuel cells. They break down organic waste and, in the process, generate electricity. For instance, Geobacter sulfurreducens is a bacterium that can transfer electrons to electrodes, enabling the conversion of organic matter into electrical energy.
  • Waste-to-Energy: Microorganisms facilitate the conversion of organic waste, such as agricultural residues and food scraps, into energy through processes like anaerobic digestion. In India, projects like the “Swachh Bharat Abhiyan” incorporate biogas production from organic waste as part of waste management practices.
  • Bioethanol: Certain microorganisms like yeast and bacteria can ferment sugars to produce bioethanol, which can be blended with gasoline or used as a standalone fuel. This technology has seen significant progress in India with the promotion of ethanol production from sugarcane and corn.
  • Biodiesel: Microbes can convert plant oils, animal fats, or algal lipids into biodiesel through transesterification. Initiatives in states like Tamil Nadu involve the production of biodiesel from non-edible oilseeds like Jatropha.
  • Biogas Generation by Bioremediation: Microorganisms can be employed in bioremediation to clean up contaminated sites while simultaneously generating biogas. This dual benefit approach is relevant in polluted areas of the country.
  • Biohydrogen Production: Clostridia bacteria can ferment organic matter to produce biohydrogen, an environmentally friendly and efficient fuel source.
  • Carbon Capture and Utilization (CCU): Microorganisms can capture and utilize carbon dioxide (CO2) from industrial processes, helping to reduce greenhouse gas emissions while generating energy.

Benefits of using microorganisms:

  • Renewable and Sustainable Energy Sources: Microbial energy technologies offer a renewable and sustainable alternative to finite and non-renewable fossil fuels, thereby contributing to long-term energy security.
  • Energy Security: Reduced dependence on foreign oil due to microbial energy technologies can enhance national energy security, mitigating the impact of global fuel price fluctuations.
  • Economic Growth: The development of microbial energy technologies can create new job opportunities and stimulate economic growth, aligning with the “Make in India” initiative.
  • Cleaner Air and Water Quality: Biofuels produced from microbial energy technologies lead to reduced air pollution and improved water quality, addressing environmental concerns and public health.
  • Challenges in using microorganisms for making fuels:
  • Lack of Infrastructure: The infrastructure required for large-scale microbial energy production is still underdeveloped in India.
  • High Production Costs: The initial costs of setting up microbial energy facilities can be prohibitive, necessitating financial incentives and investment.
  • Lack of Skilled Workforce: A skilled workforce specializing in microbial energy technology is currently lacking, highlighting the need for focused training and education.
  • Nascent Technology: Microbial energy technology is still in its nascent stages, requiring further research and development to reach its full potential.
  • Intensive Production Process: The production process for microbial energy technologies can be resource-intensive and complex.

Government Initiatives in the Biofuel Sector:

  • National Biofuel Policy: The Indian government has introduced a National Biofuel Policy to promote the production and use of biofuels in the country.
  • GOBARDHAN Scheme: The GOBARDHAN (Galvanizing Organic Bio-Agro Resources Dhan) scheme aims to promote the conversion of organic waste into biogas and bio-CNG, reducing waste and producing renewable energy.
  • Jaiv Indhan – Vatavaran Anukool Fasal Awashesh Nivaran (JI-VAN) Scheme: JI-VAN focuses on the production of bioethanol from lignocellulosic biomass, contributing to the ethanol blending program.
  • Ethanol Blending: The Indian government has mandated ethanol blending in petrol to reduce reliance on fossil fuels and promote the use of bioethanol.


Harnessing the potential of microorganisms to produce fuel is a promising and sustainable solution to address the global fuel crisis. When complemented with other renewable energy technologies, it can play a significant role in achieving Sustainable Development Goal 7 (SDG-7) for affordable and clean energy. To realize this potential, it is imperative to encourage further research and development in this sector, invest in infrastructure, and foster a skilled workforce. By doing so, India can lead the way in unlocking the power of biotechnology to create a more sustainable and secure energy future.

Legacy Editor Changed status to publish November 10, 2023