Design consultancy
- Feedstock characterisation and assessment
- Process design and basic engineering
- Cost estimates, financial models and DPRs
- Safety, risk and HAZOP studies
CBG services · India
We design, build and run compressed biogas plants.
PRES supports CBG projects across their whole life: design, engineering, procurement, construction, commissioning and long-term operation. Our aim is simple. Every plant we touch should work on day one and keep working for decades.
A joint venture of
Pragati Group×HRG Solutions GmbH, Germany
15+years of biogas work by our German partner
50+projects supported in India, Germany, the UK, Indonesia and beyond
12feedstocks our team has digested at scale
12 TPDpressmud CBG pilot plant in Bijnor, UP
What we do
One partner from first study to steady operation
Developers can hire us for a single scope or the whole project. The services follow the order a plant is built in.
Equipment sourcing
- Selection of proven European and Indian equipment
- Feeders, mixers, pumps and gas upgrading
- Vendor evaluation and inspection
- Supply through HRG's office in Germany
Complete EPC
- Detail engineering and bills of quantities
- Civil works, digesters and balance of plant
- Equipment installation
- Commissioning and performance runs
Operations & maintenance
- Plant operation and biological process control
- Preventive maintenance and spares
- Plant health assessments
- Repairs and restarts of stalled plants
Need help with permissions and approvals as well? We support compliance filings and applications for central financial assistance.
Who we are
Indian execution strength, German biogas know-how
CBG plants fail for two reasons: weak process design or weak execution on the ground. The two partners in PRES each cover one of them.
Pragati GroupInfrastructure, construction and land · India
Pragati builds and runs large infrastructure across India, with deep experience in construction and on-ground project delivery.
- 15 Mn sq ft
- of warehousing developed across India
- 20 Mn sq ft
- of industrial space built by its EPC arm, PISL
- USD 400 Mn+
- of EPC projects won for Reliance, Adani, GMR and AM/NS
- USD 350 Mn+
- committed by Morgan Stanley, Hillhouse and Mitsubishi Estate
- 2,000+ acres
- of land aggregated in rural and semi-urban India
- Since 1957
- making agricultural equipment, with long ties to sugarcane farmers and mills
Source: Pragati Group profile.
HRG Solutions GmbHBiogas engineering and equipment · Detmold, Germany
HRG brings more than 15 years of biogas experience from Germany, where anaerobic digestion is a mature industry. Its team has designed, built and serviced plants on four continents.
- 15+ years
- designing, building and operating biogas plants
- 50+
- projects supported across Germany, India, the UK, Indonesia and other countries
- 2 kg to 600 t
- of waste a day: the range of plant sizes the team has engineered
- 12
- feedstock types handled, from pressmud to pig slurry
- In-house
- sourcing, installation and after-sales service of plant equipment
Pilot project
12 TPD pressmud CBG plant, Bijnor
Our pilot runs on pressmud, the filter cake left over from sugar mills. It is a difficult feedstock: fibrous, gritty and high in sulphur. We chose equipment and process steps that handle it reliably.
- Feed system
- Schmidberger solid feedersImported feeders coupled with high-capacity PCP pumps, in our own design based on the proven pre-mix system.
- Water use
- Zero water additionThe feed arrives already homogenised. Gas yield goes up and the mixing load inside the digester goes down.
- Digesters
- CSTR, time-testedContinuously stirred tanks designed for even mixing and minimal dead zones.
- Mixing
- European mixersGears and motors sit outside the digester, so maintenance needs no shutdown or tank entry.
- Upgrading
- Under 3% methane lossWater scrubbing delivers up to 99% methane content.
- Hydrogen sulphide
- Up to 10,000 ppmHandles the high sulphur load that pressmud produces.
- Carbon dioxide
- Biogenic CO₂ captureThe plant can capture CO₂ from the gas stream as a second product.
- Turndown
- 25% to 120%of rated capacity, for seasonal feedstock and planned maintenance.
- Controls
- Highly automatedAutomation cuts the scope for operator error.
Track record
Plants on almost every feedstock India has
The right design depends on what goes into the digester. Our team has engineered plants for farm, industrial and urban waste streams.
- Pressmud sugar mills
- Spent wash cane
- Distillery effluent
- Napier grass
- Maize silage
- Rice and wheat straw
- Cattle manure and slurry
- Chicken litter
- Pig slurry
- Palm oil mill effluent
- Food waste
- Municipal solid waste
Plant size range
2 kg / day600+ t / day
Countries worked in include India, Germany, the United Kingdom, France, Israel, Cuba, Thailand, Singapore, Indonesia and Australia.
| Selected project | Feedstock | Output |
|---|---|---|
| Bharat Biogas Gujarat, India | Pressmud 100 TPD | CBG 4.5 TPD FOM 35 TPD |
| Pune Municipal Corporation Maharashtra, India | Food waste 300 TPD | Biogas 31,000 m³/d CBG 15 TPD |
| E.ON Westfalen Weser Germany | Maize silage 200 TPD | Biogas 12,000 m³/d Power 1.2 MWe |
| Beta Pork, Bioela Australia | Pig slurry and paunch 170 TPD | Biogas 6,500 m³/d Power 600 kWe + heat |
Team
The people behind PRES
Jörg Grondke
Managing Director, HRG Solutions GmbH · Founder, Jorg Biogas
Jörg has supported more than 50 biogas projects over 15 years in Germany, India, the UK, Indonesia and other countries. He leads resource management and new solutions in the biogas sector, and focuses on business models that create both ecological and economic value.
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Raghav Agrawal
Role TBC
An IIT graduate with more than 8 years of experience across BCG, FSG, Shuttl and Attentive.ai.
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Ishan Tyagi
Role TBC
An IIT graduate who began his career at BCG and went on to work at startups including FrontRow and Bhaichung Bhutia Football Schools. He has also run grassroots projects in organic farming.
50–60 TPDCBG capacity in the pipeline
Pipeline
Beyond the pilot
Further projects are in development or evaluation across five states.
- Uttar Pradesh
- Tamil Nadu
- Andhra Pradesh
- Telangana
- Haryana
Contact
Planning a CBG plant, or fixing one?
Tell us about your site, feedstock and stage. We will come back with the right next step.
- contact@ TBC
- Phone
- TBC
- Office
- Gurugram, Haryana Address TBC