Top CBG Companies in India (2026): Leading Compressed Biogas Plant Manufacturers, EPC & Producers

Looking for the top CBG companies in India? Compressed biogas (CBG) has moved from pilot projects to large commercial plants backed by Reliance, Adani, global biogas specialists and the oil marketing companies. This 2026 guide lists the leading CBG plant manufacturers, EPC companies and producers in India – including Proveg Engineering and Biovardhan Energy – what each one is known for, and how to choose the right partner if you are planning your own CBG plant.

Quick summary

• CBG plant manufacturers & EPC: Proveg Engineering (Kota, Rajasthan) and Biovardhan Energy – complete CBG plants from feedstock pre-treatment to compression and FOM/LFOM.
• Large producers / developers: Reliance Industries, Adani Total Gas, Verbio India, EverEnviro, GPS Renewables.
• Technology and EPC players: Thermax, Praj Industries, Organic Recycling Systems.
• Gas buyers (offtakers): IOCL, BPCL, HPCL, GAIL and city gas distribution companies under the SATAT scheme.
• Main feedstocks: paddy straw, napier grass, press mud, cattle dung and municipal solid waste (MSW).
• Why now: CBG blending in CNG and piped gas became mandatory from FY 2025-26 and rises to 5% from 2028-29.

What is CBG and why is the industry growing?

Compressed biogas (CBG) is biogas that has been cleaned (CO₂, H₂S and moisture removed) and compressed so that its methane content and properties are close to natural gas. It can be sold as automotive fuel at CNG stations, injected into city gas pipelines or used by industries. The leftover digestate becomes fermented organic manure (FOM) and liquid fermented organic manure (LFOM) – a second revenue stream.

Two government measures drive the market:

• SATAT (Sustainable Alternative Towards Affordable Transportation): launched by the Ministry of Petroleum and Natural Gas on 1 October 2018, under which oil marketing companies offer long-term purchase of CBG from entrepreneurs. Its original target was 5,000 CBG plants and 15 MMT of CBG per year. Actual commissioning has been much slower than that target, which is why serious, well-engineered projects still have a large opportunity.
• CBG Blending Obligation (CBO): announced in November 2023 – voluntary until FY 2024-25, then mandatory at 1% of CNG (transport) and PNG (domestic) consumption in FY 2025-26, 3% in FY 2026-27, 4% in FY 2027-28 and 5% from FY 2028-29.

For the full process and machinery, read our CBG plant in India complete guide. For financial support, see central and state subsidies for CBG plants in India (2026).

Top CBG companies in India (2026)

The list below covers CBG plant manufacturers and EPC companies that build plants for entrepreneurs, followed by the large producers, technology players and oil companies shaping the industry. It is not a ranking by revenue.

1. Proveg Engineering & Food Processing Pvt Ltd (Kota, Rajasthan)

Proveg Engineering supplies CBG plant solutions and machinery for entrepreneurs, gaushalas, FPOs and agro-industries. Proveg builds modular CBG plants configured around your feedstock – covering feedstock pre-treatment (shredding and grinding of paddy straw, napier grass and other agri-residue), anaerobic digestion, biogas purification (CO₂/H₂S removal), compression and cascade storage – plus downstream processing of digestate into saleable FOM and LFOM using biofertilizer machines. Because Proveg also manufactures biomass pellet plants, charcoal plants and biochar plants, we can help plan an integrated agri-waste project where every part of the residue earns money.

2. Biovardhan Energy Solutions Pvt Ltd

Biovardhan Energy is a turnkey CBG / Bio-CNG plant EPC company that designs, manufactures, builds and commissions compressed biogas plants from 3 TPD to 20+ TPD. It works as a single engineering partner across the full value chain – Pre-CBG (feedstock assessment, bale shredding and an in-house twin-screw bio-extruder for paddy straw and napier grass), CBG (CSTR digesters, agitators, membrane gas holders, H₂S/moisture/CO₂ removal, compression, cascades and PLC/SCADA) and Post-CBG (digestate dewatering, FOM/LFOM, biochar and pellets). Biovardhan has about 125,000 sq. ft. of manufacturing infrastructure, is an authorised channel partner of AMOCO membrane gas holders in India, and supports clients with DPR, GOBARdhan registration, offtake/LOI, PCB, PESO and bank-finance documentation. Visit biovardhanenergy.com.

3. Reliance Industries

Reliance has made the largest announced commitment in Indian CBG. In November 2024 it agreed with the Andhra Pradesh government to set up 500 CBG plants in the state with an investment of about ₹65,000 crore. The foundation stone of the first plant was laid at Kanigiri in Prakasam district in April 2025. Reliance is also using degraded and waste land for energy crops such as napier grass to secure feedstock at scale.

4. Adani Total Gas Ltd (ATGL)

Adani Total Gas, through its subsidiary Adani Total Bioenergy Ltd, commissioned phase 1 of its Barsana (Mathura, Uttar Pradesh) biogas plant on 31 March 2024. Phase 1 processes about 225 tonnes per day (TPD) of agricultural residue, cattle dung and press mud to produce around 10 TPD of CBG. At full build-out the plant is planned for 600 TPD of feedstock and more than 42 TPD of CBG – making it one of the largest single-location CBG projects in India.

5. Verbio India

Verbio, the German biofuel company, runs one of India's best-known straw-based plants at Lehragaga, Sangrur (Punjab). The plant uses paddy straw (parali) as feedstock, has a rated capacity of about 33 TPD of CBG, started production in 2022 and was built at a cost of around ₹230 crore. Its gas is sold through Indian Oil fuel stations. It is often cited as proof that parali can be converted into a commercial fuel instead of being burnt in the field.

6. EverEnviro Resource Management

Gurugram-based EverEnviro develops and operates municipal-waste and agri-waste CBG plants. It is associated with the Indore Gobar-Dhan bio-CNG plant, which processes about 550 TPD of segregated wet municipal waste and was inaugurated by the Prime Minister in February 2022 – widely described as Asia's largest MSW-based bio-CNG plant. EverEnviro has plants running in Uttar Pradesh, partnerships with Indian Oil and Indraprastha Gas, and a joint venture with ONGC for multiple CBG plants.

7. GPS Renewables

Founded in 2012 in Bengaluru, GPS Renewables is a biofuels technology and project company. It has executed MSW-to-CBG and agri-residue projects, including work in Indore and Barabanki, and has formed joint ventures with oil companies such as IOCL, BPCL and Oil India to develop CBG plants. In 2026 it raised ₹635 crore in Series C funding to expand its CBG project pipeline.

8. Thermax (Thermax Bioenergy Solutions)

Thermax, the Pune-based energy and environment group, offers end-to-end EPC for bio-CNG plants. It has built rice-straw-based plants in Punjab, including at Dhuri and Patran, and in December 2023 received an order worth over ₹500 crore for five bio-CNG plants. Thermax is a strong choice for large projects that need an established EPC contractor.

9. Praj Industries

Praj, known for ethanol technology, offers CBG solutions under its RenGas brand. Its projects include an HPCL rice-straw CBG plant at Badaun (Uttar Pradesh) and press-mud-based CBG for sugar mills. Praj also signed an MoU with the Ministry of Petroleum and Natural Gas to support CBG under SATAT, and its strength is integration with sugar and distillery complexes.

10. Organic Recycling Systems (ORSL)

ORSL is an EPC and technology company focused on organic waste. It has won CBG plant contracts from BPCL, including a project in Kozhikode (Kerala), and EPC work for integrated CBG-plus-biofertilizer plants. It is a relevant option for municipal and institutional waste projects.

11. Oil and gas companies (offtakers and JV partners)

Indian Oil (IOCL), BPCL, HPCL, GAIL and ONGC are not just buyers of CBG under SATAT – several have formed joint ventures with private developers to build their own plants. City gas distribution companies such as Indraprastha Gas also empanel CBG suppliers. For an entrepreneur, a signed offtake agreement with one of these companies is usually the key to bank financing.

Comparison table: leading CBG companies in India

Common feedstocks used by CBG companies

• Paddy straw (parali): plentiful in Punjab, Haryana and UP after the kharif harvest, but bulky and high in silica, so it needs strong shredding and pre-treatment.
• Napier grass: a high-yield energy crop that gives steady feedstock all year when grown on contract.
• Press mud: a sugar-mill by-product; ideal for plants located near sugar factories.
• Cattle dung: the basis of the GOBARdhan scheme; works well for gaushalas and dairy clusters.
• Municipal solid waste (MSW): requires good source segregation – the Indore plant shows what is possible when segregation is strong.

Feedstock security is the single biggest risk in a CBG project. Plants that fail usually fail because they could not collect enough raw material at the right price, not because of the digester.

How to choose the right CBG plant company or partner

1. Check real, running references. Ask for plants that are commissioned and selling gas – with location, feedstock and actual output, not just design capacity. Visit at least one.
2. Match the technology to your feedstock. A plant designed for cattle dung will not perform on paddy straw without proper pre-treatment and digester design.
3. Look at the full value chain. Gas upgrading, compression, cascade storage, and FOM/LFOM handling all affect your revenue – make sure they are in scope.
4. Confirm offtake and approvals early. A SATAT Letter of Intent or offtake agreement, PESO approvals and pollution control consent should be planned from day one.
5. Plan for subsidy and finance. Central and state incentives can change project returns significantly – see our CBG subsidy guide.
6. Insist on after-sales service. Shredders, pumps and compressors need spares and quick support – choose a supplier who can reach your site.

Opportunity for new entrepreneurs

With the blending obligation rising every year, gas companies need far more CBG than is produced today. That creates room not only for large corporates but also for mid-size plants run by entrepreneurs, sugar mills, dairy cooperatives, gaushalas and FPOs – especially in states with plenty of agri-residue such as Punjab, Haryana, Uttar Pradesh, Madhya Pradesh, Rajasthan and Maharashtra. A well-planned mid-size plant that secures its feedstock and sells both gas and organic manure can be a long-term, stable business.

Frequently asked questions

Which are the top CBG companies in India?

Leading names include Proveg Engineering and Biovardhan Energy (CBG plant manufacturing and turnkey EPC), Reliance Industries, Adani Total Gas, Verbio India, EverEnviro, GPS Renewables, Thermax, Praj Industries and Organic Recycling Systems, with IOCL, BPCL, HPCL, GAIL and ONGC acting as major buyers and JV partners.

Which company makes CBG plants in India?

Proveg Engineering manufactures modular CBG plants – from feedstock pre-treatment and digestion to purification, compression and FOM/LFOM processing. Biovardhan Energy offers turnkey CBG plant EPC from 3 TPD to 20+ TPD. Thermax, Praj and Organic Recycling Systems are other EPC options.

Which is the largest CBG plant in India?

Among operating plants, Verbio's Lehragaga plant in Punjab (about 33 TPD rated capacity) and the Indore Gobar-Dhan plant (550 TPD of wet waste) are among the largest. Adani's Barsana plant is planned for more than 42 TPD of CBG at full capacity.

What is the CBG blending mandate in India?

CBG blending in CNG (transport) and PNG (domestic) is mandatory from FY 2025-26 at 1%, increasing to 3% in FY 2026-27, 4% in FY 2027-28 and 5% from FY 2028-29.

Who buys CBG in India?

Under the SATAT scheme, oil marketing companies such as IOCL, BPCL and HPCL buy CBG for sale at their fuel outlets. City gas distribution companies and industrial users also buy CBG.

Can a small entrepreneur set up a CBG plant?

Yes. Many plants are set up by individual entrepreneurs, cooperatives and gaushalas. Success depends on secure feedstock, a reliable offtake agreement, correct machinery for your raw material and using available subsidies. Read our complete CBG plant guide to understand the process.

Which raw material is best for a CBG plant?

There is no single best feedstock. Press mud and cattle dung digest easily, paddy straw and napier grass are abundant but need good pre-treatment, and MSW works where segregation is strong. Choose the material you can secure reliably for 12 months a year.

Planning a CBG plant? Talk to Proveg Engineering

Whether you are starting with paddy straw, napier grass, cattle dung or press mud, Proveg Engineering can configure a CBG plant around your feedstock – from pre-treatment and digestion to purification, compression and organic manure processing – and connect your CBG project with pellet, biochar or charcoal lines for complete agri-waste utilisation. See our CBG plant page for details.

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Note: Company information in this article is based on publicly reported projects and company announcements as of 2026. Capacities and plans may change; please verify current details directly with each company.