financially viable (financially viable project)

Financially viable in the Indian biogas and recycling context means a project clears three simultaneous tests: a project IRR of 15–20% post-tax, a Debt Service Coverage Ratio of at least 1.5×, and a payback period under 5–6 years. Banks such as SBI, PNB, and IREDA apply these thresholds when sanctioning term loans under the priority sector or renewable energy lines. Falling short on any one — typically the DSCR — leads to either loan rejection or a demand for additional promoter equity and personal guarantees.

The composition of revenue determines whether a project clears the bar. For a 10 TPD CBG plant, gas sales alone usually deliver only a 10–12% IRR at SATAT prices — below the bankability threshold. The decisive uplift comes from digestate sales as Fermented Organic Manure under FCO 1985, which can add 15–25% to top-line revenue, plus state-level capex subsidies (10–30% under MNRE) that cut the equity requirement. For e-waste and plastic recyclers, EPR credit sales typically contribute 30–50% of EBITDA — without them, gate fees and material sales alone rarely deliver a 15% IRR.

Common failure modes are predictable. Single-feedstock projects (only press mud, only paddy straw) face seasonality risk that crushes plant load factor below 60%, dragging IRR into single digits. Plants without firm 5-year offtake contracts — for both CBG and digestate — get hit with 10–15% revenue volatility that breaks DSCR. Underestimating O&M cost (typical Indian plants spend 8–12% of capex annually, not the 4–5% in feasibility reports) and ignoring working capital for 90-day receivables from OMCs are the other recurring traps.

• Three bankability tests: IRR 15–20%, DSCR ≥ 1.5×, payback ≤ 5–6 years.
• Digestate revenue typically tips a CBG project from marginal to viable.
• EPR credit revenue is the equivalent lever for e-waste and plastic recyclers.
• Firm offtake contracts and multi-feedstock supply are the two most under-priced risk mitigants.