Compressed Biogas and India's Energy Security: SATAT Scheme, Strait of Hormuz Crisis, and Alternative Fuels
The 2026 Strait of Hormuz crisis — triggered by the US-Iran conflict — has disrupted approximately 50% of India's crude oil and most of its LPG supply that transits through the strait.
In response to the supply shock, the central government raised petrol and diesel prices — the first such hike in four years — and increased CNG prices.
India imports over 85% of its crude oil requirement (~5.5 million barrels/day), making it acutely vulnerable to disruptions in West Asian supply routes.
The energy crisis has renewed attention on Compressed Biogas (CBG) — produced from organic waste — as a domestically available, renewable alternative to fossil CNG that can reduce import dependence.
Budget 2026-27 announced an excise duty exemption on CBG content in blended CNG, and a mandatory blending obligation requiring 1% CBG in CNG/PNG from FY 2025-26, scaling to 5% by FY 2028-29.
Compressed Biogas (CBG) vs Conventional CNG: Definitions and Composition
Biogas is a mixture of gases — primarily methane (~55–60%) and carbon dioxide (~35–40%) — produced by the anaerobic digestion of organic matter (crop residue, cattle dung, municipal solid waste, sewage sludge). When biogas is purified to remove CO2 and other impurities and compressed, it becomes Compressed Biogas (CBG), also called Bio-CNG.
Key Details
- Methane content: CBG contains >90% methane (comparable to conventional CNG from fossil gas at ~87–99% methane), making it a drop-in fuel — usable in existing CNG vehicles and gas pipelines without modification.
- Energy value: CBG has a calorific value of ~52,000 kJ/kg; CNG is ~50,000–56,000 kJ/kg — essentially equivalent.
- Conventional CNG is derived from fossil natural gas extracted from geological reservoirs; India imports significant quantities as LNG (Liquefied Natural Gas) — worth approximately $14.98 billion in 2024.
- Key difference: CBG is renewable (produced from waste; carbon-neutral cycle), while conventional CNG is a fossil fuel subject to import dependency and price volatility.
- Feedstocks for CBG: agricultural residues, cattle/poultry manure, municipal solid waste, press mud from sugar mills, sewage sludge.
India produces enormous quantities of organic waste annually. The Hormuz crisis makes the case for a domestic, waste-based fuel alternative far more urgent — CBG can displace imported LNG and reduce the current account deficit on energy imports.
SATAT Scheme: Sustainable Alternative Towards Affordable Transportation
The SATAT (Sustainable Alternative Towards Affordable Transportation) scheme is the central government's flagship programme to build a CBG production and supply ecosystem in India.
The Hormuz crisis and resulting fuel price hikes have created strong economic and strategic motivation to accelerate SATAT implementation. The 2026 Budget incentives are directly designed to address the weak demand that held back plant commissioning.
India's Energy Security Framework: Import Dependence and Diversification
Energy security refers to the availability of energy at affordable prices without vulnerability to external supply disruptions. India's energy profile is characterized by high import dependence, making it structurally exposed to geopolitical risks.
The 2026 crisis is an acute manifestation of India's chronic energy vulnerability. CBG addresses multiple dimensions simultaneously: it is domestically produced (energy security), renewable (climate commitments), waste-based (waste management), and can replace imported LNG (current account improvement).
Strait of Hormuz: Strategic Geography and India's Exposure
The Strait of Hormuz is a narrow waterway between the Arabian Gulf (Persian Gulf) and the Gulf of Oman, connecting to the Arabian Sea. It is the world's most critical oil transit chokepoint.
The article directly connects the Hormuz crisis to India's domestic fuel price hike, establishing why a domestic fuel like CBG that is entirely insulated from West Asian geopolitics represents a strategic asset.
- India crude oil import dependence: 85%+ of requirement (~5.5 million barrels/day)
- India's rank as oil importer: third-largest globally
- LNG imports (2024): approximately $14.98 billion
- Share of crude/LPG routed through Strait of Hormuz (pre-crisis): ~50% of India's crude supply
- Petrol/diesel price hike: first in four years (2026)
- SATAT scheme launch: October 1, 2018, Ministry of Petroleum and Natural Gas
- SATAT target: 5,000 CBG plants, 15 million tonnes/year CBG production
- Commissioned plants as of 2026: approximately 108 (against 5,000 target)
- CBG blending mandate: 1% in CNG/PNG from FY 2025-26; 5% by FY 2028-29
- CBG methane content: >90% (comparable to conventional CNG)
- CBG calorific value: ~52,000 kJ/kg
- National Biofuel Policy: 2018 (revised 2022), Ministry of Petroleum and Natural Gas