What Happened
- The Government of India has expanded a scheme to enable the injection of Compressed Biogas (CBG) into the national natural gas pipeline (NGPL) and City Gas Distribution (CGD) networks, building on guidelines that the Petroleum and Natural Gas Regulatory Board (PNGRB) approved in February 2026.
- The move is aimed at increasing domestic gas availability for Compressed Natural Gas (CNG) and Piped Natural Gas (PNG) segments, reducing dependence on imported Liquefied Natural Gas (LNG), and ensuring cost-effective transportation of biogas from production sites to demand centres.
- The PNGRB guidelines cover technical standards for CBG injection, quality and purity specifications, installation procedures for injection facilities, operational monitoring protocols, and safety requirements including odorisation and control systems.
- The expansion is linked to the Compressed Biogas Blending Obligation (CBO), which mandates CBG blending into CNG and PNG starting at 1% in the current year, rising to 3% (2026–27), 4% (2027–28), and 5% by 2028–29.
- India currently has approximately 103 operational CBG plants; 174 are under construction and 425 more are yet to begin, against the original SATAT scheme target of 5,000 plants.
Static Topic Bridges
What is Compressed Biogas (CBG) and How is it Produced?
Compressed Biogas (CBG) is purified biogas that has been compressed to high pressure (typically 200–250 bar) for use as a vehicle fuel or for injection into gas grids. Biogas is produced through the anaerobic digestion (AD) of organic matter — agricultural residues (paddy straw, sugarcane bagasse), cattle dung, municipal solid waste (MSW), sewage sludge, and food waste. After purification to remove CO₂ and hydrogen sulphide, the resulting biomethane is chemically similar to natural gas (primarily methane, CH₄) and can substitute for it.
- CBG has a methane content of 90%+ after purification — comparable to CNG (also methane-based).
- One tonne of paddy straw can produce approximately 100–150 Nm³ of biogas.
- One tonne of cattle dung produces approximately 40–50 Nm³ of biogas.
- CBG is considered a renewable fuel — its combustion does not add net new carbon to the atmosphere (biogenic carbon cycle).
- The by-product of AD is Fermented Organic Manure (FOM), a rich organic fertiliser, creating a circular economy loop for farmers.
- India generates over 62 million metric tonnes of biomass and organic waste annually — the feedstock base for a massive CBG industry.
Connection to this news: The pipeline injection scheme unlocks the logistical bottleneck that has constrained CBG uptake — previously, CBG plants sold directly to retail consumers via cylinders; pipeline integration allows CBG to be blended at scale into the city gas network.
SATAT Scheme: India's Compressed Biogas Programme
The Sustainable Alternative Towards Affordable Transportation (SATAT) scheme was launched by the Ministry of Petroleum and Natural Gas in October 2018. It is India's flagship programme to scale up CBG production by encouraging private entrepreneurs to set up CBG plants, with public sector oil marketing companies (IOCL, BPCL, HPCL) as offtake guarantors. The scheme was designed to reduce fossil fuel import dependence while managing agricultural waste.
- Launch: October 1, 2018 (Ministry of Petroleum and Natural Gas).
- Original target: 5,000 CBG plants producing 15 million metric tonnes (MMT) of CBG per year by 2023–24.
- Actual progress by 2024: Only ~103 operational plants (far below target); 174 under construction.
- SATAT plants are eligible for priority sector lending and interest subvention.
- The scheme operates through Letters of Intent (LoIs) issued by oil marketing companies — over 3,500 LoIs issued, but conversion to operational plants has been slow.
- Key challenge: High capital cost of AD plants, feedstock logistics, and initial offtake uncertainty.
- The CBG Blending Obligation (CBO) introduced in 2025 is a demand-side pull measure to complement SATAT's supply-side push.
Connection to this news: The pipeline injection scheme directly addresses one of SATAT's biggest implementation gaps — the lack of a distribution backbone. With pipeline access, CBG plants can inject gas into the network rather than depending on retail cylinder distribution, dramatically improving the economics of new plants.
City Gas Distribution (CGD) Networks and PNGRB's Role
City Gas Distribution (CGD) networks are the infrastructure that supplies piped natural gas (PNG) to households, CNG to vehicles, and gas to industrial and commercial users in authorised geographical areas (GAs). The Petroleum and Natural Gas Regulatory Board (PNGRB), established under the PNGRB Act 2006, regulates CGD entities, pipelines, and now the emerging CBG injection framework.
- PNGRB has authorised CGD networks across 295+ Geographical Areas (GAs) covering ~70% of India's population.
- As of 2024, CGD networks serve 28+ million PNG households and 4,900+ CNG stations nationwide.
- India's total natural gas pipeline grid: approximately 23,000 km of high-pressure transmission pipelines.
- PNGRB's CBG injection guidelines specify minimum purity standards (methane >90%), pressure requirements for injection, and metering/billing protocols.
- 74 CBG producers and 31 CGD entities were participating in the injection pilot framework as of September 2024.
Connection to this news: By approving technical standards for CBG injection into both the national pipeline grid and CGD networks, PNGRB has cleared the regulatory pathway that allows CBG to flow from farms and waste plants directly into the gas supply chain at scale.
India's LNG Import Dependence and the Case for Domestic Biogas
India is a significant importer of Liquefied Natural Gas (LNG) — primarily from Qatar, Australia, and the USA. LNG imports are price-volatile (linked to global spot markets) and expose India to supply disruptions such as the current West Asia conflict. The development of domestic CBG as a substitute reduces both the import bill and the geopolitical vulnerability of India's gas supply chain.
- India's LNG imports: approximately 26–28 million tonnes per annum (MTPA) in recent years.
- India's domestic natural gas production: approximately 33–35 billion cubic metres (BCM) per year — insufficient to meet demand.
- If SATAT's 5,000-plant target is met: 15 MMT of CBG/year would substitute for roughly 15–20% of India's current LNG imports.
- The CBO blending mandate (1%–5% by 2028–29) will create a guaranteed demand base for CBG, reducing the risk for new plant investors.
- India's National Bioenergy Programme (2022) also targets 17 GW of biogas-based power by 2030.
Connection to this news: The pipeline injection expansion is strategically timed — with LNG prices spiking to $24–25/MMBtu due to the West Asia conflict, domestic CBG at a lower and more predictable cost provides an increasingly attractive substitute, improving both energy security and import bill management.
Key Facts & Data
- Regulatory body: PNGRB (Petroleum and Natural Gas Regulatory Board) — guidelines approved February 2026
- CBG Blending Obligation (CBO): 1% (2025–26) → 3% (2026–27) → 4% (2027–28) → 5% (2028–29)
- Operational CBG plants (2024): ~103; under construction: 174; yet to begin: 425
- SATAT scheme target: 5,000 plants producing 15 MMT/year of CBG (by 2023–24)
- India's annual biomass/organic waste availability: 62+ million metric tonnes (feedstock potential)
- CGD networks: 295+ Geographical Areas (GAs); 28+ million PNG connections; 4,900+ CNG stations
- India's LNG imports: ~26–28 MTPA; Qatar is largest supplier (~47% share)
- SATAT launched: October 1, 2018 (Ministry of Petroleum and Natural Gas)
- Pipeline benefit: Allows CBG to flow directly into gas grid, bypassing cylinder distribution bottleneck