A complete raw-material value chain for CNG, Gobar Gas & Natural Gas plants — RainGun-irrigated Napier grass, harvested, chipped and shredded into ready biomass feedstock.
CNG, Gobar Gas and Natural Gas plants all need a steady, high-volume supply of prepared biomass. Thumba supplies the machinery for every stage of that supply chain — from irrigating the raw material crop through to delivering uniform, ready-to-feed chipped and shredded biomass.
Four stages, four machines — all supplied by Thumba.
Napier grass grown under RainGun irrigation delivers India's highest recorded yield for this application — a direct result of uniform, rainfall-like coverage across the full field with no dry pockets.
Cutting every 45 days — well before the crop reaches its full 20-foot height — keeps Napier grass tender and consistently sized, which is what makes it compatible with machine cutting rather than relying on manual labour for every harvest cycle. This regular, predictable cutting interval is what lets a Napier plot supply a CNG, Gobar Gas or Natural Gas plant on a continuous schedule rather than a single seasonal harvest.
View Fodder Harvesting Machines ›Harvested Napier grass is first chipped into small pieces, then shredded and ground into fine, uniform particles. This size reduction is essential for feeding a CNG, Gobar Gas or Natural Gas plant digester consistently — uneven feedstock leads to uneven gas output.
Thumba's chipper and shredder range covers portable single-phase 2 HP units up to industrial 50 HP machines, with output capacities from 300 kg/hour up to 3,000 kg/hour depending on model.
View Chipper & Shredder Models ›
It is the complete set of machines needed to turn a fodder crop into ready feedstock for CNG, Gobar Gas and Natural Gas plants: RainGun irrigation for high-yield Napier grass cultivation, harvesting, chipping and shredding/grinding into uniform biomass. Thumba supplies the machinery for every stage of this chain.
Napier grass gives India's highest recorded yield for this purpose — up to 250 tons per acre per year — with a cutting interval of just 45 days. It grows without chemical fertilizer, keeping production cost very low, and is fully compatible with machine cutting for consistent, large-scale supply.
Napier grass can reach up to 20 feet at full maturity, but for biomass production it is cut on a 45-day interval — well before it reaches full height — which keeps the crop tender and easy for machine harvesting.
After harvesting, Napier grass and other agricultural residue is chipped into small pieces and then shredded/ground into fine, uniform particles. This size reduction is essential for consistent feeding into CNG, Gobar Gas and Natural Gas plant digesters. Thumba's chipper and shredder range covers 2 HP portable units up to 50 HP industrial machines.
No. This yield is achieved through complete organic or natural farming with RainGun irrigation — no chemical fertilizer is used, which also keeps production cost very low.
Yes. Farms already growing fodder or with irrigation infrastructure can typically adapt with the addition of RainGun irrigation for the Napier crop and Thumba's harvesting, chipping and shredding machines — no new land is required beyond what is already under cultivation.
Tell us your land size and target plant capacity — we'll recommend the right RainGun, harvesting, chipping and shredding machines for your CNG, Gobar Gas or Natural Gas project.
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