Biogas utilization

Green power from biogas.

Building on the ENER-G Group's legacy, we invest in the technology, then design, build and operate the plant. From landfill gas, or from biogas produced at wastewater treatment plants, we generate electricity and heat.

Talk to us See what we do

13landfill gas utilization sites built across Hungary
20+years of experience operating landfill gas systems, with our own team
3services: gas engine utilization, flaring, biogas power plants
4biogas power plants built at wastewater treatment plants

How it works

A complete landfill gas management service.

No other company is needed: you get a full service package from one partner, and can leave the landfill gas worries to us.

1
Survey and designWe survey the landfill, prepare the permit design and, on request, handle the permitting.
2
Gas resource assessmentWe build the gas collection system, measure during flaring and recommend in an expert report, which can also go to the authority.

Then, depending on the site's needs

Neutralisation: flaring

3
Building the landfill gas neutralisation systemWith a mobile or fixed flare, to the regulations and the client's needs.
4
Operating the systemWe run the O&M and gas measurements, and issue the measurement records and, if needed, the expert report.

Utilization: heat and power generation

3
Design and permittingWe size the system to the gas resource and handle the permitting.
4
Construction and commissioningWe build and commission the gas collection system and the connected gas engine power plant.
5
Operating the systemWe fully operate and maintain the complete system, and meet the environmental requirements of landfill gas management.

What we offer

Three services, one specialist.

Landfill gas utilization with gas engines

Our own investment model for landfill sites. We fund the technology, then design, build and operate the facility, so the landfill owner needs no capital outlay.

Funded, built and operated by Promexa
Continuous supervision of the power plants and preventive maintenance
Helps the site meet the 20/2006 (IV.5.) KvVM decree
All in one hand, from gas wells and collection system to the power plant

Landfill gas neutralisation by flaring

Where there is no gas engine, flaring safely neutralises the landfill gas and keeps the site compliant with the regulations. We install mobile or fixed flares and operate the system.

Mobile or fixed flares
Our own landfill gas collection system design
Carrying out gas measurements and handing over measurement records
Expert gas reports prepared for the client

Biogas power plants

We design and build gas engine power plants on an EPC basis for the biogas produced at wastewater treatment plants. You get a turnkey plant from one partner, from the first design to commissioning, and the biogas becomes electricity and heat.

EPC: design, procurement and construction
Turnkey plant under one contract, with one responsible partner
Proven: 4 plants already built at wastewater treatment plants
Commissioning and, on request, operation and maintenance

Why Promexa

An outstanding track record in biogas management.

Industry-leading experience
We are one of the operators with the longest track record and the deepest hands-on experience in landfill gas operation.
A fully in-house specialist team
We work exclusively with our own, well-established team of professionals, who are the experts in their field.
Continuous operational oversight
We do not leave the systems we build unattended: we monitor them continuously, visit them regularly and fine-tune them for stable, efficient performance. Our clients can count on us as a partner throughout the operating period.

Do you operate a landfill or a wastewater treatment plant?

Tell us about your site. We assess the gas resource and recommend the most suitable solution: flaring, gas engine utilization, or a biogas power plant delivered on an EPC basis.