20 September 2017

Eleven farmers around the town of Alvesta in Småland agreed in 2014 to build a joint biogas facility. The result is a profitable facility, 4,500 kg of biogas every day, and fertiliser with a nutrient content that is 10% higher for spreading on the fields.

Alvesta biogasAlvesta biogas Photo credit: Monica Westman“Manure from three cows provides fuel that can take a car 15,000 km.”

”Every day, 4,500 kg biogas is produced here. That’s enough to take a car around the world twice – every day.”

Joakim Granefelt and Stefan Bengtsson, Alvesta biogasThe proud owners of Alvesta Biogas show us around the new and spacious facility just outside the town of Alvesta in Småland.

The 11 participating farms around Alvesta have, among other things, 1,500 cows, 2,300 young cattle and 1,900 pigs. Their manure is transported to the joint biogas facility where it is digested together with abattoir waste from Kalmar and food waste from Lantmännen Reppe.

The average distance to and from the farms is 7 km. A total of 80,000 tonnes of substrate is handled each year, providing 1 5oo tonnes of methane. This corresponds to approximately two million litres of petrol.

A stable process

“The digesters are always filled to the same degree, and the same mixture of substrates is always used. This means that the process is stable,” Joakim Granefelt, farmer and managing director of Alvesta Biogas, tells us.

Joakim Granefelt, managing director Alvesta biogasJoakim Granefelt, managing director Alvesta biogas Photo credit: Monica WestmanThe residue after the digestion is transported back to the farms, which cultivate feed for the animals that provide new manure in an ecological circulation.

“We transport as much as we used to, from the farms out to the fields, but we take a detour via the digestion facility and in this way obtain higher quality fertiliser and biogas,” Joakim Granefelt says.

The fertiliser is sanitised with the aid of a chips burner, where it is heated to 71 °C before it enters the reactor.

Compresses into tubes

The gas is also compressed into tubes and sent in containers to other marketsThe gas is also compressed into tubes and sent in containers to other markets Photo credit: Monica WestmanThe raw gas from the reactor consists of 70% methane, and it is upgraded on site to vehicle fuel with a methane content of 97%. Eon purchases most of the fuel. A small fraction is sold at a pump operated by Småländska Bränslen, but most of it is compressed into tubes and sent in containers to other markets.

“We have one employee who operates the plant during the daytime. At other times, seven people are on call on a rota system, one week in seven. We can organise pretty much everything by iPhone,” says Joakim Granefelt.

The facility is currently owned by the 11 farmers, together with Växjö Stifts Egendomsnämnd and Entreprenörinvest Sverige. The project also received a grant of SEK 11 million from the county administrative board.
“We have now made a profit two years in a row,” Joakim says.

Hans Andersson, Mats Eklund and Joakim GranefeltHans Andersson, Mats Eklund and Joakim Granefelt Photo credit: Monica WestmanEverybody wins

“Alvesta Biogas shows once again that everybody wins when we invest in biogas. It’s not just the environment that benefits: the biogas contributes to better financial results in, for example, agriculture, forestry and the food industry,” says Mats Eklund, director of the Biogas Research Center and professor at LiU.

Biogas tour, 10 stops in 3 days


A biogas bus takes a tour

More than 30 researchers and representatives for companies involved in the Biogas Research Center, BRC, spent three days this summer touring southern Sweden to exchange experiences with companies and decision-makers.

Reningsverket Lucerna, Västervik

Biogas and fertiliser from fish sludge

Biogas solved problems with slimy and foul-smelling wastewater from the fishing industry in Västervik. The sludge is now used as a source of both fuel for vehicles and top-quality fertiliser. There are, however, several other benefits.

Biogasbus on tour in Kalmar

Moving to biogas saves Kalmar money

When Kalmar County invited tenders for operating public transport, biogas was the obvious preferred option. “Our starting point was that we believed it to be best for the county,” says Ulf Nilsson, chairman of the Kalmar Regional Association.

Fler nyheter från LiU

Man holds golden plate (Urban Forsberg).

He has a key to solving the semiconductor shortage

The semiconductor shortage is becoming increasingly urgent. Linköping University conducts materials research in close collaboration with industry, with a view to increasing the semiconductor production rate in Europe.

Portrait of two persons.

Two new Wallenberg Academy Fellows at LiU

Researchers Olaf Hartig and Alexander Gillett have been appointed Wallenberg Academy Fellows at LiU. The five-year grants are intended to make it possible for young researchers to make important scientific breakthroughs.

Vallastaden in Linkoping

Linköping is Europe's most innovative city – thanks largely to LiU

Linköping is the first Swedish city to win one of the European Commission’s European Capital of Innovation Awards (iCapital). LiU has played an important part in this success in many ways.