Biogas facility in Trångsvik

trangsvikenLägda farm is a dairy farm with ecologically certified (KRAV) milk production in lukewarm conditions. Monica and Hans-Peter Eriksson run the farm which has had its own biogas facility since winter 2011/2012. The objective is to become self-sufficient in electricity and heating. Already today, the couple is completely self-sufficient with heating and 60% with electricity. The biogas plant is the second installation of its kind in Jämtland, and has been made possible with investment support from the county council.
They estimate that it will take between 10 – 12 years before the investment will have paid off.  How does a biogas facility work?
Well, cow manure and eventually slaughter waste is digested in a digestion chamber, which breaks down the material with bacteria.
This produces biogas and bio fertiliser. Biogas is an extremely climate smart source of energy and bio fertiliser is an effective fertiliser which can reduce the need for purchasing mineral fertiliser.
To convert the gas to electricity, the couple has purchased a stirling motor. The volume of the digestion chamber in the biogas facility is 300 cubic metres, and provides about 400 000 – 500 000 kwh of energy per year and the elecricity generator provides 50 000 – 60 000 kwh electricity per year. Today the couple saves a lot of time that used to be taken up taking care of wood for the heating boiler.
They also get some small revenues from selling wood. They aim to use the waste heat from the facility to heat up a green house. On a field trip to Lägda farm you’ll experience how a biogas facility works on a farm and the development prospects that farmers see in renewable energy sources.

Town: Trångsviken
Find us: Rönningsberg 177
Contact: Hans-Peter Eriksson
Telephone: 0+46 (0)70-217 25 41
Email: hp@ronningsberg.se
Visiting: Year-round
Duration: 2 hours
Languages: Swedish
Maximum number: 20 people

Miljöteknik, energi & klimat