What’s New?

2018-05 Press release:

New ETW SmartCycle® biomethane plant in operation in France

Second ETW plant already under construction

In April 2018, the energy plant constructor ETW Energietechnik from Moers installed its first biogas processing plant in Scherwiller, France, on a Rytec plant. The plant has been in continuous operation since mid-April. This is a compact model of the biogas treatment system ETW SmartCycle® PSA developed by ETW. With a processing capacity of 230 to 385 standard cubic metres of biogas per hour, this plant model has been specially developed for the French market.

 Leitet Herunterladen der Datei einPressrelease 05/2018

2018-04 Press release:

ETW Energietechnik delivers the first combined heat and power plants with „SCR“ exhaust gas cleaning system

The German CHP specialist ETW Energietechnik has delivered natural gas CHP units with selective catalytic reduction (SCR) technology for the first time. Thus, Stadtwerke Duisburg is the first user of Adblue technology from ETW. The family business from Moers comprises three plants with MWM engines of the type TCG 2020V12, each with an electrical output of 999 kilowatts.

[Translate to English:] 2016-10 Pressemitteilung:

ETW Energietechnik developed the SmartCycle PSA to upgrade biogas to RNG

 80,000 hours on-stream time, more than 99 percent availability and purity

The Pressure Swing Adsorption (PSA) technology is recognized for decades as an effective and feasible process for gas upgrading in different large scale industrial applications. The German company ETW Energietechnik GmbH located in the city of Moers successfully improved and optimized this technology for the biogas upgrading process.

The new Biogas upgrading technology was developed by a team of adsorption specialists with many years of experience in the chemical industry, highly qualified plant builders and mechanical engineers. That’s how the SmartCycle PSA was born. The Biogas upgrading system developed by ETW is designed to grant very long equipment lifetimes.

The SmartCycle PSA stands out with an extremely low energy consumption of 0.14 KWh/Nm³ - an enormous step in innovation with large economic benefits. Only the optimized pressure swing process made it possible to use an innovative dry, low maintenance compressor technology with a very high availability.

The Biomethane plant designed by ETW can automatically adjusts the pressure swing cycles to a varying inlet gas quality and volume flow. That enables total control of the operator over the outlet gas purity (over 99%) or the desired heating value.  Especially operators of Waste  or sewage plants which deal with always changing biogas qualities and flows, or those who want to shift spontaneously between the electricity and/or RNG markets to maximize income, profit from the clever designed process control system.

That´s why the operation of the SmartCycle PSA  is considered extremely simple and effortless. In addition, no other consumables than electricity are demanded, resulting in extremely low operating costs in any operational situation.

ETW built four large-scale SmartCycle PSA plants with an documented overall on-stream time of more than 80,000 hours and 99 percent availability.


Interested operators can check out the performance of the plants in different Biomethane production sites across Germany. ETW will present the innovative Biogas upgrading technology at the Energy Decentral Fair from 15th to 18th November in Hannover, Stand nr. 24-A3.


[Translate to English:] 2016-08 Pressemitteilung:

ETW Energietechnik developed a new gas blending technology for CHPs

Innovative solution that improves the feasibility of land-fill gas and other CHPs.

Moers, 11th March 2016: ETW Energietechnik (ETW) developed a new equipment that blends two gas streams of different qualities to fuel CHPs. This equipment precisely blends the two gases to a homogeneous fuel mixture and is indicated for landfills that struggle with shrinking heating values and volumes of biogas along their lifetime. This shrinking heating value can be compensated by gradually enriching biogas with  natural gas (NG). The blending is completely automatized and designed to consume the lowest possible amounts of  NG. Almost any CHP can easily be upgraded.

 There are several advantages for the operator. At startups the CHP receives the perfectly balanced fuel, preventing startup problems caused by low CH4 concentration. That enables the operation of CHPs even with CH4 concentration lower than 30%, increasing its lifetime and availability, thus its economic feasibility.  The CHP can be operated independently from the land-fill gas supply.

Press Release

Press release:

Biogas Processing Plant Successful in Continuous Operation

Leitet Herunterladen der Datei einPress release 07/2012