Excise Waiver for Biogas Blending, Clear Policy Line Can Unlock ₹1 Lakh Crore Investment: IBA

Why It Matters

The measure could catalyse massive private capital, fast‑track India’s renewable fuel transition and deliver significant climate benefits.

Key Takeaways

• Excise waiver could unlock up to ₹1 lakh crore investment.
• 5% CBG blend needs 2.5‑3 MMTPA, driving ₹45‑55 k crore.
• 7‑8% blend by 2032 could double investment potential.
• Waiver improves IRR for 4.8‑10 TPD biogas plants.
• 10% CBG blend cuts emissions by 12‑15 Mt CO₂e annually.

Pulse Analysis

India’s 2026 Union Budget introduced an excise‑duty waiver for compressed biogas blended with compressed natural gas, signalling a policy shift that aligns fiscal incentives with the country’s renewable energy roadmap. By removing the tax disparity that previously penalised CBG—a renewable fuel derived from agricultural and municipal waste—the government creates a predictable cost structure for city‑gas distributors. This clarity is essential for investors who require long‑term revenue certainty before committing to large‑scale infrastructure projects.

The financial implications are profound. A modest 5% blending level could mobilise ₹45‑55 billion in capital, while a more ambitious 7‑8% target by 2032 could push total investment toward the ₹1 lakh crore mark. The waiver lifts internal rates of return for typical 4.8‑10 ton‑per‑day plants, turning marginal projects into bankable opportunities and encouraging private sector participation across the supply chain—from feedstock aggregators to CBG processing facilities. Lower weighted‑average fuel costs also benefit city‑gas distributors, potentially stabilising retail prices for end‑users.

Beyond economics, the environmental payoff is significant. CBG can slash lifecycle greenhouse‑gas emissions by 70‑90%, and a 10% blend in the national CNG pool could avert 12‑15 million tonnes of CO₂‑equivalent annually. This aligns with India’s 2070 net‑zero target and supports rural development by creating demand for waste‑derived feedstocks such as paddy straw and cattle dung. As policy certainty solidifies, the CBG sector is poised to become a cornerstone of India’s clean‑energy transition, delivering both climate resilience and robust economic growth.