Continuous torrefaction plants · India
Waste Transformed
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Waste to energy, engineered for industrial scale
Keystone Green Energy designs and delivers advanced continuous torrefaction plants that efficiently convert municipal solid waste (MSW), refuse-derived fuel (RDF), biomass, and sewage treatment plant (STP) sludge into dry, carbon-rich, high-energy industrial fuel, promoting sustainable waste management and cleaner energy solutions.
Torrefaction solutions for four industrial feedstocks
Keystone Green Energy utilizes advanced continuous torrefaction technology to transform Municipal Solid Waste (MSW), Biomass, Refuse-Derived Fuel (RDF), and Sewage Treatment Plant (STP) Sludge into high-quality, feedstock-specific torrefied fuels.
The resulting dry, brittle, and energy-dense fuel is designed to replace coal or support co-firing applications in thermal power plants, cement plants, steel plants, and industrial boilers, contributing to cleaner energy production and sustainable waste management.
Keystone Green Energy's project portfolio includes a fully commissioned 100 TPD plant in Warangal and a successfully completed 50 TPD Delhi Jal Board pilot project. Additionally, its 500 TPD Municipal Solid Waste plant in Gorakhpur and 200 TPD biomass processing plant in Sangrur are currently in the commissioning phase, demonstrating the company's commitment to innovative waste-to-energy solutions.
Our Ongoing Projects
We are currently executing multiple CBG projects in Punjab & Haryana:
1. Jalandhar, Punjab (20 TPD): 20 TPD CBG plant at Bakherana Village, Bhiwadi area, Jalandhar. This is our flagship project in Punjab.
2. Jind, Haryana (5 TPD): 5 TPD CBG plant at Avail Village, Jind, designed to process local agri-residue efficiently.
3. Patiala, Punjab (15 TPD): 15 TPD CBG plant near Devigarh, Patiala. Work is in advanced stage.
4. Ludhiana,12 tpd Punjab: CBG / CNG Biogas plant at Dakha, District Ludhiana, to cater to industrial demand for clean fuel.
Apart from these, several other projects in Haryana and other states are On Process and will be commissioned soon.
Powering the Future with Waste
Bio-CNG is purified biogas with 90–95% methane. Made from kitchen waste, cow dung, and agricultural residue, it works exactly like CNG but without fossil fuels — clean, cost-effective, and made in India for India.
We are working to make Bio-CNG accessible for farms, industries, and cities. Our goal is simple: turn waste into wealth and reduce dependence on imported fuels. Backed by the Govt. of India’s SATAT scheme, we design, install, and maintain small to large-scale biogas to Bio-CNG plants.
Renewable
Made from waste, not crude oil.
Low Emissions
70% less CO2 than diesel and petrol.
Extra Income
Waste becomes fuel plus organic fertilizer.
Our Vision
Every village and industry in India running on Bio-CNG by 2030.
Engineering Depth from Feedstock to Bio CNG Filling
As an end-to-end Bio CNG Plant Manufacturer, we connect biology, anaerobic digestion equipment, and gas upgrading systems for long-term operational performance.
Feedstock-Led Bio-CBG Engineering
Feedstock characterisation, biomethane yield modelling, and substrate pre-treatment shape the process before plant equipment is specified.
Integrated Plant Manufacturing
In-house fabrication of GFS digesters, biogas upgrading units, and central controls eliminates fragmented vendor liability.
Turnkey Bio CNG Plant Performance
Plant commissioning, operator training, continuous gas quality monitoring, and support ensure sustained high-purity yield over the plant lifecycle.
One Connected System. Five Protected Outcomes.
Each stage of our Bio CNG conversion process is engineered to prepare the next—protecting biological conversion first, then purification and compression.
Secure the feed
Plan reception, storage and contaminant control around actual incoming material.
Condition the slurry
Size reduction, mixing and controlled pre-treatment create a consistent digester feed.
Protect biology
Stable anaerobic conditions convert organic matter into energy-rich raw biogas.
Upgrade the gas
Remove moisture, H₂S, and CO₂ to reach fuel-grade Bio-CBG specifications.
Compress and dispatch
Compress, meter and route CBG for cascades, dispensing or the defined offtake route.
Start with what
arrives every day.
Indicative biomethane yields help frame initial project feasibility. Final Bio-CBG plant design uses representative feedstock testing, seasonal availability analysis, and defined operating regimes.
| Feedstock | Indicative Biogas Potential | Indicative Bio-CNG Potential | Design Priority |
|---|---|---|---|
| Cattle dung | 40–60 m³/tonne | 15–20 kg/tonne | Slurry consistency |
| Food waste | 120–140 m³/tonne | 45–55 kg/tonne | Contaminant removal |
| Press mud | 100–110 m³/tonne | 35–40 kg/tonne | Seasonal storage |
| Napier grass | 110–130 m³/tonne | 40–45 kg/tonne | Size reduction |
| MSW organic fraction | 70–90 m³/tonne | 25–30 kg/tonne | Segregation quality |
Indicative industry reference ranges only. Actual output depends on feedstock composition, volatile solids, pre-treatment, retention time and operating conditions.
The waste challenge
India needs scalable material recovery
Keystone Green Energy specializes in transforming challenging waste streams into valuable, energy-rich solid fuels through advanced torrefaction technology, supporting sustainable waste management and reducing dependence on conventional fossil fuels.
Complete Torrefaction Solutions
End-to-end waste to energy solutions
MSW to Torrefied Charcoal Plants
Keystone Green Energy provides end-to-end Engineering, Procurement, and Construction (EPC) solutions for plants that convert Municipal Solid Waste (MSW) into valuable solid fuels, including Torrefied MSW, Torrefied Coal, Green Coal, Charcoal, and Biochar. Its comprehensive EPC services cover plant design, engineering, procurement, installation, and commissioning, delivering integrated waste-to-fuel solutions for industrial applications.
Torrefied MSW can support coal-replacement and biomass co-firing applications in thermal power plants, helping improve waste utilization, reduce dependence on conventional fossil fuels, and promote more sustainable energy generation in line with applicable government policies.
Keystone Green Energy's project portfolio includes a 500-tonnes-per-day (TPD) MSW-to-Torrefied MSW plant for NTPC Limited in Gorakhpur, Uttar Pradesh, highlighting its capabilities in large-scale waste-to-fuel infrastructure
Biomass to Torrefied Charcoal Plants
Keystone Green Energy provides industrial-scale biomass torrefaction Engineering, Procurement, and Construction (EPC) solutions, converting agricultural residues, woody biomass, agro-waste, and other organic biomass into valuable solid fuels, including Torrefied Biomass, Torrefied Coal, Green Coal, Charcoal, and Biochar. Its comprehensive EPC services cover plant design, engineering, procurement, installation, and commissioning, delivering integrated biomass-to-fuel solutions for industrial applications.
Torrefied Biomass can be used as a coal-replacement fuel or for co-firing in thermal power plants, supporting reduced reliance on conventional fossil fuels, improved agricultural waste utilization, and more sustainable energy generation in line with applicable government policies.
Keystone Green Energy's biomass project portfolio includes a 200-tonnes-per-day (TPD) Biomass-to-Torrefied Biomass plant for TransPacific Engineers in Sangrur, Punjab, demonstrating its capabilities in large-scale biomass processing and renewable fuel production.
STP Sludge to Torrefied Charcoal Plants
Keystone Green Energy provides end-to-end Engineering, Procurement, and Construction (EPC) solutions for sewage sludge torrefaction, sewage sludge processing, biosludge treatment, and sludge-to-fuel conversion. Its advanced torrefaction technology transforms sewage treatment plant (STP) sludge into valuable solid fuels, including Torrefied Coal, Charcoal, Green Coal, and Biochar. Comprehensive EPC services cover plant design, engineering, procurement, installation, and commissioning, delivering integrated waste-to-energy solutions for industrial applications.
The resulting torrefied STP sludge helps transform high-moisture waste into a dry, usable solid fuel, supporting effective sludge management, resource recovery, and more sustainable waste-to-energy practices.
Keystone Green Energy's STP sludge project portfolio includes a 50-tonnes-per-day (TPD) STP Sludge-to-Torrefied Charcoal pilot plant for the Delhi Jal Board in Delhi, demonstrating its capabilities in converting sewage sludge into a potential alternative fuel.
THE SOLUTION IS GREEN COAL
01
Feedstock
We utilize the untreated, non recycled, and non used waste as our input
02
Process
We process the segregated waste by indirect heat and pressure
03
Output
The resulting torrefied solid fuel has a measured calorific range specific to its feedstock. See each measured range.
04
Use
Green Coal is utilized by thermal power plants, cement plants and others to generate energy
THE
Summary
OUR GOALS AND AMBITIONS
Our ambitious and dedicated team is made up of individuals driven to change the world and leave it cleaner for future generations.
LOWER CO2 EMISSIONS
LOWER METHANE EMISSIONS
LOWER HEALTH RISKS DUE TO WASTE
LOWER AQI
INCREASE SUSTAINABLE ENERGY GENERATION
Vision
We are aligned with the Government of India's SATAT initiative. After successful commissioning of current plants, our vision is to expand pan-India.
At Keystone Green Energy, we believe in transparency, timely delivery, and long-term partnership.
We are not just building CBG plants; we are building a cleaner, greener, and self-reliant India.
Mission
To create a future where innovation and sustainability drive success. We aim to lead with foresight and adaptability.
Commitment
To uphold the highest standards of integrity and quality. We are dedicated to making a positive impact in everything we do.
Phone
+1 (647) 600 4355Copyright © 2026 Keystone Green Energy . All rights reserved. | Designed by Star Web Maker