Current Affairs Topics Archive
International Relations Economics Polity & Governance Environment & Ecology Science & Technology Internal Security Geography Social Issues Art & Culture Modern History

Excise waiver for biogas blending, clear policy line can unlock ₹1 lakh crore investment: IBA

February 22, 2026 5 min read Economics Environment & Ecology GS3 (Energy Security Environment Infrastructure Indian Economy)
On This Page ▼

What Happened

  • The Indian Biogas Association (IBA) has highlighted that the excise duty waiver on Compressed Biogas (CBG) blended with Compressed Natural Gas (CNG) — announced in Union Budget 2026 — can unlock up to ₹1 lakh crore in investment in the biogas sector.
  • If city gas distribution (CGD) networks achieve a 5% biogas blending level nationwide over the next five years, it will require approximately 2.5–3 million metric tonnes per annum (MMTPA) of CBG — enabling investments of ₹45,000–55,000 crore.
  • If blending grows to 7–8% by 2032, the investment potential doubles to nearly ₹1 lakh crore.
  • The excise waiver removes the tax component on the biogas portion of blended fuel, making CGD companies' average fuel costs lower and potentially stabilising or reducing consumer gas prices.
  • The IBA also called for a clear policy line to build investor confidence — noting that the combination of mandatory blending obligations and the excise waiver creates a bankable investment case for CBG plant developers.
  • Environmental benefit cited: a 10% blend of CBG in CNG could lower emissions by 12–15 million tonnes of CO2-equivalent annually; CBG cuts greenhouse gas emissions by 70–90% over its life cycle compared to fossil fuel equivalents.

Static Topic Bridges

Compressed Biogas (CBG) and the SATAT Scheme

Compressed Biogas (CBG) is biogas — primarily methane (CH4) produced from anaerobic digestion of organic waste — that has been purified and compressed to the same specification as CNG (Compressed Natural Gas), making it a drop-in substitute for CNG in transport and piped natural gas (PNG) in households. The Government launched the SATAT (Sustainable Alternative Towards Affordable Transportation) scheme on October 1, 2018, to build an ecosystem for CBG production from agricultural residue, cattle dung, municipal solid waste (MSW), press mud (sugarcane), and sewage sludge. India's total theoretical CBG production potential is estimated at approximately 60 million tonnes per year from available organic feedstocks.

  • SATAT scheme launched: October 1, 2018 (Ministry of Petroleum & Natural Gas)
  • CBG composition: Purified biogas compressed to ~200 bar; methane content >90%
  • CBG feedstocks: Agricultural residue (paddy straw), cattle dung, MSW, press mud, sewage sludge
  • India's CBG theoretical potential: ~60 million tonnes per year
  • CBG is a drop-in substitute for CNG in transport (auto-rickshaws, buses, trucks) and PNG (domestic cooking)
  • Key implementing agencies: IOC, BPCL, HPCL (purchase CBG from plants and sell through networks)

Connection to this news: The SATAT scheme created the initial demand signal and supply chain, but uptake was slow due to lack of guaranteed offtake and economic viability. The mandatory blending obligation plus the new excise waiver together address both the demand certainty and the price competitiveness challenges.

Mandatory CBG Blending Obligations in City Gas Distribution (CGD)

City Gas Distribution (CGD) networks supply CNG to vehicles (transport) and PNG to households and industries in urban/semi-urban areas. CGD licences are awarded by the Petroleum and Natural Gas Regulatory Board (PNGRB) under the PNGRB Act, 2006, in specific Geographical Areas (GAs). As of 2024, PNGRB has awarded CGD licences in ~300 Geographical Areas covering over 600 districts. The National Biofuels Coordination Committee (NBCC) announced mandatory CBG Blending Obligations (CBO) for the CGD sector, effective from FY 2025-26: 1% in FY26, 3% in FY27, 4% in FY28, and 5% from FY28-29 onwards. This statutory mandate creates guaranteed demand for CBG producers.

  • CGD regulator: Petroleum and Natural Gas Regulatory Board (PNGRB) — established under PNGRB Act, 2006
  • CGD network coverage: ~300 Geographical Areas, over 600 districts
  • Mandatory CBG Blending Obligation (CBO) — effective FY 2025-26:
  • FY 2025-26: 1% of CNG/PNG consumption
  • FY 2026-27: 3%
  • FY 2027-28: 4%
  • FY 2028-29 onwards: 5%
  • If 5% blending achieved nationwide over 5 years: requires 2.5–3 MMTPA of CBG → ₹45,000–55,000 crore investment
  • If 7–8% blending by 2032: total investment potential ~₹1 lakh crore
  • GAIL mandated as implementing agency for the CBG-CGD Synchronisation (Synchro) Scheme

Connection to this news: The IBA's ₹1 lakh crore investment projection is directly derived from these mandatory blending percentages — the CBO creates the guaranteed demand that makes CBG plant investment bankable. The excise waiver reduces the cost of blended fuel for CGD companies, making compliance economically rational.

Biogas and India's Circular Economy Objectives

CBG production from agricultural and municipal waste aligns with India's circular economy objectives — converting waste into energy while generating a bio-slurry byproduct usable as organic fertiliser. This addresses two critical challenges simultaneously: the agricultural waste burning problem (paddy straw burning in Punjab/Haryana contributes significantly to Delhi's winter air quality crisis) and dependence on fossil fuel imports (India imports ~85% of its crude oil). A 10% CBG blend in the national CNG/PNG network could also reduce LNG imports, saving foreign exchange. The CBG sector also creates rural employment in biomass aggregation, transport, and plant operation.

  • CBG feedstock from agricultural waste: Particularly paddy straw (Punjab, Haryana) — currently burned in fields, causing severe air pollution
  • CBG byproduct: Fermented organic manure (FOM) — can replace chemical fertilisers, reducing import dependence
  • India's crude oil import dependence: ~85% of total consumption
  • Environmental benefit: CBG reduces GHG emissions 70–90% over full life cycle vs. fossil fuels
  • A 10% CBG blend: Reduces emissions by 12–15 million tonnes CO2-equivalent annually
  • Foreign exchange savings from LNG import substitution: A significant additional benefit of scaling CBG

Connection to this news: The IBA's advocacy for an excise waiver and clear policy line is grounded in the circular economy and energy security rationale — making biogas blending not just an environmental measure but a national economic priority that addresses multiple policy objectives simultaneously.

Key Facts & Data

  • Union Budget 2026 measure: Excise duty waiver on CBG blended with CNG
  • IBA investment projection (5% blending, 5 years): ₹45,000–55,000 crore
  • IBA investment projection (7–8% blending by 2032): ~₹1 lakh crore
  • CBG requirement for 5% blending nationwide: 2.5–3 MMTPA
  • SATAT scheme launched: October 1, 2018
  • India's total CBG potential: ~60 million tonnes per year
  • Mandatory CBG Blending Obligation (CBO): 1% (FY26) → 3% (FY27) → 4% (FY28) → 5% (from FY29)
  • CGD network coverage: ~300 GAs, 600+ districts
  • CGD regulator: PNGRB — established under PNGRB Act, 2006
  • CBG environmental benefit: 70–90% GHG reduction over life cycle vs. fossil fuels
  • 10% blend environmental impact: 12–15 million tonnes CO2-eq saved annually
  • Synchro Scheme implementing agency: GAIL
  • IBA: Indian Biogas Association — industry body for biogas sector