SOKRATHERM CHP unit with injection for Urea and compressed air (1), SCR-catalyst (2) and oxidation catalyst (3).

For our compact CHP units with turbo engines we offer an emissions reduction solution with SCR catalyst fully integrated into the CHP unit’s sound absorbing case. It complies with all limit values of the German 44. BImSchV and and can already reliably reduce the NOx emissions below the limit value of 0,1 g/Nm³ which will be mandatory from 1.1.2025 on. The CHP units can be equipped with the SCR catalyst right away or be delivered fully prepared for the equipment with an SCR catalyst later on. The emitted NOx-values are measured continuously, logged very 10 seconds in the CHP unit control and transferred, if demanded, to the CHP operator and/or the authorities as the day’s average values via our remote monitoring system.

Since the energy production with least emissions is one of our core objectives, catalysts are a standard feature of our CHP units for decades. For the CHP units with suction engine (GG 50-260) this is a regulated 3-way catalyst for the Lambda=1 operation which reduces the CHP unit’s emissions below the limit values of the mentioned guideline without further changes in construciton or equipment.

AdBlue consumption and NOx emissions of the compact CHP unit GG 530 SCR before and after the SCR catalyst.

For CHP units with turbo engines we have developed a solution years ago to reduce the emission of nitrogen oxides (NOx) from the back then valid limit value 0,5 g/Nm³ to below 0,1 g/Nm³. As a result of this development we have presented the prototype of the compact CHP unit type GG 402 SCR on Hannover Messe 2017. By equipping the catalyst system inside the CHP unit with an SCR-catalyst and accessoires wie have achieved the targeted substantial reduction of the NOx emissions.

Natural gas powered CHP units produce heat and power with much less pollutant than conventional boilers (heat) and large power plants (power) for decades. Also before the German 44. BImSchV came into effect, they emitted – according to the registered German association ASUE (Consortium for the efficient and eco-friendly energy consumption) – 58 % less carbon dioxide (CO2), 98,5 % less sulphur dioxide (SO2), 99 % less dust and 29 % less nitrogen oxides (NOx) than the energy producers named above.

SOKRATHERM compact CHP units with fully integrated SCR catalyst

For our compact CHP units with turbo engines we offer an emissions reduction solution with SCR catalyst fully integrated into […]


SOKRATHERM with compact CHP unit GG 50 at the E-world 2020 fair

At the E-world energy & water fair in February 2020 we have presented our well-proven compact CHP unit GG 50. […]


SOKRATHERM CHP unit started operation in Buenos Aires

The capitals of Argentina and Germany, Buenos Aires and Berlin, have started a city partnership in 1994 and decided to […]


SOKRATHERM in the new MAN Engines image movie

In more than three decades of cooperation we have developed a close relationship with the company MAN Engines: We have […]


New office building in Hiddenhausen

Due to the continuous growth of our company the number of employees has risen to over one hundred in total. […]


Premiere of the especially efficient compact CHP unit GG 430 on Hannover Messe 2019

On this year’s Hannover Messe we presented our new compact CHP unit GG 430 for the first time ever. With […]


Compact CHP unit GG 50 for children’s hospital in Buenos Aires

In summer 2018 we have received the order to deliver and commission a compact CHP unit GG 50 in the […]


Presentation of the CHP unit type GG 132 at Hannover Messe 2018

After its successful premiere in Essen and Frankfurt we have exhibited the newly developed CHP unit type GG 132 at […]


Innasol presented our compact CHP unit GG 50 at the ecobuild fair 2018 in London

At the ecobuild fair in March 2018 at the ExCel Exhibition Centre in London, our partner Innasol presented the innvoative […]


Double anniversary with premiere of the new company movie

40 years of SOKRATHERM / 25 years of CHP unit production in Nordhausen. In November 2017 we celebrated our company […]


GG 50 presentation at All-Energy fair 2017 in Glasgow

After its successful UK premiere in March our further developed compact CHP unit GG 50 was presented at the All-Energy […]


SOKRATHERM is again among the Top 10 of the German CHP unit producers

In the current ranking of the CHP unit market in Germany which has been published by the professional paper Energie […]


Relaunch of the website

Our website is now available for customers and visitors in a new appearance: More appealing design, larger content and […]


Cooperation with Italian partner Ranieri Tonissi S.p.A. signed

Roughly one year after the first informal talks on Hannover Messe 2015 we have signed an agreement about the cooperation […]


Fair presence in Frankfurt and Hannover with world premiere of the compact CHP unit GG 260

In April 2016 we have exhibited two different CHP units on two fairs: On the EnEff fair in Frankfurt, the […]



Kraft aus Tradition

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