Background and Context
India is making significant strides in its renewable energy journey by progressively blending Compressed Biogas (CBG) with conventional natural gas. The country's current CBG blending level stands at nearly 2% and is on track to reach the 3% target in the current financial year under the National Biofuel Policy framework.
National Biofuel Coordination Committee (NBCC) Roadmap
The NBCC has established a phased approach for CBG blending:
- 2025-26: 1% CBG blending target
- 2026-27: 3% CBG blending target
- Subsequent years: 4-5% blending target
This roadmap represents India's long-term clean energy transition strategy and commitment to reducing fossil fuel dependence.
CBG Infrastructure Expansion
Commissioned Plants: 210 CBG/bio-CNG plants have been commissioned across India
Plants Under Construction by State:
- Uttar Pradesh: 80 plants (highest)
- Maharashtra: 46 plants
- Gujarat: 35 plants
- Karnataka: 25 plants
Understanding Compressed Biogas (CBG)
Definition: CBG is a renewable fuel produced from biomass and organic waste through anaerobic decomposition (breakdown of organic matter by bacteria in the absence of oxygen).
Feedstock Sources:
- Agricultural residue
- Cattle dung
- Sugarcane press mud
- Sewage
Properties:
- Similar calorific value to CNG (energy released on complete combustion)
- Can replace CNG in automotive, industrial, and commercial sectors
CBG vs CNG: A Comparison
| Feature | CBG | CNG |
|---|---|---|
| Source | Produced from biomass and organic waste | Extracted from fossil fuels |
| Environmental Impact | Eco-friendly, reduces air pollution, supports circular economy | Cleaner than petrol/diesel but fossil fuel-based |
| Import Dependence | Can be produced domestically from local biomass | 50.8% import dependency in FY25 |
| Rural Impact | Supports rural employment and livelihood | Limited scope for rural livelihood creation |
Significance for India
Energy Security
- Reduces dependence on imported natural gas (currently at 50.8% import dependency)
- Promotes domestic energy production from local biomass
Environmental Benefits
- Reduces air pollution
- Helps prevent crop residue (stubble) burning
- Reduces methane emissions through waste utilization
- Supports circular economy
Economic Opportunities
- Supports rural employment
- Promotes renewable energy initiatives
- Creates new revenue streams for farmers through biomass sale
Challenges and Way Forward
Experts emphasize the need for:
- Assured feedstock supply - Ensuring consistent availability of organic waste
- Production-linked incentives - Financial support for CBG expansion
- Infrastructure development - More collection and processing facilities
- Policy continuity - Sustained government support for the sector
Related Constitutional and Policy Provisions
- National Biofuel Policy: Framework governing biofuel production and blending
- National Biofuel Coordination Committee (NBCC): Body overseeing biofuel coordination
- Gobardhan Portal: Petroleum Ministry portal tracking CBG plant development
Key Data Points for UPSC
- Current CBG blending: ~2%
- Target blending: 3% (2026-27)
- Long-term target: 4-5%
- Commissioned CBG plants: 210
- Natural gas import dependency: 50.8% (FY25)
- Top states for CBG plants under construction: UP, Maharashtra, Gujarat, Karnataka