The 25-Kilometre Rule: Why India's ₹23,731-Crore Biogas Bet Now Lives or Dies in Logistics

The Policy Was Always the Easy Part The

GOBARdhan scheme's ₹23,731-crore approval resolved a problem the CBG sector has complained about for years: demand uncertainty. With blending obligations now locked in at 3% for FY27, rising to 5% from FY29 and administered pricing set at ₹2,110 per MMBTU, a CBG plant operator finally knows there is a buyer and a floor price.

That is genuinely significant. The SATAT initiative launched in 2018 pointed in the right direction; this scheme operationalises it with money and a mandate. But the Indian Biogas Association's chairman Gaurav Kedia and senior government officials are now saying something that deserves close attention: the bottleneck has moved.

It did not disappear - it relocated. The policy fixed the demand side. The supply side - specifically, the logistics of getting feedstock from source to plant before it becomes useless - was never the policy's problem to fix and it remains unsolved.

Three Feedstocks, Three Different Logistics Failures This is

where precision matters. The "feedstock challenge" is not one problem; it is at least three, each with a different failure mechanism. Press mud is the residue from sugarcane processing. Sugar mills operate for only 4-5 months a year and press mud has high moisture content that accelerates decay.

The viable supply radius is 25 kilometres - beyond that, transportation time and microbial activity degrade quality to the point of economic loss. A CBG plant relying on press mud is therefore physically anchored to proximity of a sugar mill and faces a seasonal production calendar regardless of what national blending targets say. Paddy straw is geographically broader - it can be baled, transported over longer distances and stored - but it imposes a different constraint: a 15-day collection window during Kharif and Rabi harvesting.

Farmers are under pressure to clear their fields for the next crop. Miss that window and the feedstock either gets burned (the very stubble-burning problem CBG is supposed to solve) or becomes unavailable. The 15-day window is not a policy variable; it is an agronomic fact. Animal manure requires proximity and transport infrastructure that rural India's road network does not uniformly provide.

Why an Aggregator Model Is the Make-or-Break Variable

The aggregator is not a new idea in agricultural supply chains - it is the standard mechanism for bridging the gap between dispersed small producers and industrial buyers. What is new is recognising that CBG specifically cannot function without it.

Farmers are unlikely to enter legally binding supply contracts for social and practical reasons. An aggregator absorbs that coordination cost - rapid collection during the harvest window, proper baling and moisture-proof storage and the additional task of returning bio-slurry back to farmers as organic fertiliser, which creates a genuine incentive loop.

The target is blending 3% CBG with CNG and PNG by FY27. With only 163 functional CBG plants today and demand obligations already legislated, the arithmetic only works if feedstock supply chains are built at speed. The scheme funds the plants; it does not fund the aggregator infrastructure around them.

For UPSC GS3, this story carries two simultaneous angles - bioenergy policy and agricultural waste management - and the exam will reward the candidate who can identify precisely where the implementation chain is currently stressed, rather than simply reciting the scheme's outlay figure.