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Biogas plant Linne

Isabel and Dirk Westrup

We commissioned our plant approximately one year ago and nowadays I gladly explain why it was such a good and right decision to plan and built with BioConstruct.

At first we noticed how flexible the the BioConstruct personnel responded to our wishes while preparing the offer and also later during Construction. We wanted and also got a good compromise between a “fully developed standard product” (by no means a prototype!) and a solution customized to our specific conditions. Much attention was paid on using components ensuring the operational reliability and thus increasing the availability of the plant. Unnecessary technical frippery was left out. In other words: BioConstruct combined first-class products in a sensible way.

The result of this tailor-made and “intelligent” planning is a very high full-load availability. So far it’s a low-maintenance biogas plant that is not prone to failures. We save a lot of time thanks to the adapted automation. In average we work on the plant for approximately one hour per day. And we also get technical and biological support from BioConstruct.

In summary I can say: There were “cheaper” offers but we didn’t want to save in the wrong place. In the end it’s not important if the biogas plant was expensive but how much every kilowatt-hour cost at the end of the operating time. And we’re doing very well with that!

Dirk Westrup
Linne, August 05th 2010

We’re pleased to hear that Mr. Westrup, that’s how it should be!  

The special circumstance in Linne is the big amount of slurry that is digested. The slurry of approx. 500 cows is around 90% of the input. Apart from that manure, fodder rests, green rye and grass silage are used. Approximately 75% of the produced gas comes from slurry and manure, which occur on the farm anyways. 

We installed a pipe connection to the barn so the biogas plant is automatically supplied with 50-60 m³ of slurry per day.

In this way we reduce environmentally relevant methane emissions and instead get the energy from the slurry. After the fermentation process the digestate which is high-quality fertiliser, is land applied and by that the use of mineral fertiliser is reduced. With their biogas plant in Linne the family Westrup therefore supplies climate friendly and sustainable energy with low substrate costs and without further increasing the competition for renting land.

No wonder, little Isabel considers her daddy really clever, isn’t it? 


Daily amount

Cattle slurry


Fodder rest

800-1.000 kg

Green rye or grass silage

1.000 kg


1.500 kg


City: Bissendorf / Since: 2009 / Power: 2 x 190 kW

Connection of barns and existing manure storages for input supply to the biogas plant, The biogas plant is almost solely operated with slurry.