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Inefficient power generators replaced with proven wood gasifiers from Spanner Re²

As part of the repowering project, the originally installed wood gas generator from an external company was replaced by three wood gasifiers from Spanner Re² GmbH. Each with an electrical output of 45 kW, and extended by an efficient conveying and discharge system from Re². The ignition-jet CHP unit with an output of around 250 kW remained in place. 

referenzbild 500px Sawmill reduces energy costs with wood gasifier

Since 2014 the electrical power and the heat demand of Mr. Hagedorns sawmill gets produced by a Biomass CHP HKA 45. The Hagedorn Sawmill in North Rhine-Westphalia has six drying chambers with 400 m³ of a sawn wood that is brought to use wet. The electric and thermal energy that is necessary to run the sawmill is vast. With that in mind, family Hagedorn has been thinking about producing energy out of their accruing wood chips for quite a long time.


robert christl 500pxRobert Christl runs a sawmill north west of Landshut, in Weihmichl. To meet the huge electricity and heat demands of his sawmill Robert Christl installed a Biomass CHP from Re² in 2014. Even although his energy demands are high his costs are minimal because he uses all the waste wood products that accrue from wood processing at the sawmill as fuel for the CPH.

Repowering of wood gas CHP engine to 3,000 rpm

Since 2017, the wood gas CHP's 5.7 L engine has been running at 3,000 rpm - and very successfully. In February the engine already reached over 20,000 operating hours.

gabriel heckel 500px Carpentry uses wood as a material and to generate energy

Since 2012 Gabriel Heckel´s carpentry business  produces their own electricity and heat with their Re² Biomass CHP. Tradition and innovation are important values for the carpentry industry in the rural district of Unterallgäu. 25 employees are working with 5,000 m³ saw wood, boards and wood fiber insulations per year. They do this by using craftsmanship as well as modern manufacturing techniques to be in harmony with nature. This philosophy is also shown concerning power generation.


 mg 1040"We've always used wood for heating. And now, using the same raw material to generate electricity for our company is great for us. The warehouse was already there anyway", Peter Oberbacher.

Family Oberbacher lives in the Bavarian foothills of the Alps. Their family has been there over 500 years working an agricultural holding that was once powered by a “Göpel” with oxen drive it. Today a different type of power runs the farm: the compact Re² CHP-construction “HKA 10”. Since 2016, the saw mill, a residential building with integrated maintenance area and the remaining machines and facilities are reliably powered by heat and electricity produced by HKA 10.

andreas huber mit tochter“Conventional energy generation with the negative results, independency of costs and the central energy politics made me thoughtful. With the HKA 10 we can produce electricity and heat anytime with our own wood and are independent. A good feeling.”, says Andreas Huber.

Andreas Huber was determined to find an electricity and heat solution for his farm and buildings that was self-sufficient and cost-effective. In 2016, after a long search to find the best technology he invested in a Biomass CHP from Re². The HKA 10 CHP unit produces electricity to cover Andreas´s own needs as well as supplying the power supply system which he receives payment for according to renewable energy law. The heat produced by the HKA 10 is used for heating Andreas´s buildings and also for drying the wood chip.


Muenzinghof10Wood gasifier supplies community with electricity and heat

140 people live and work in the Münzinghof village community. Around half of these have a physical or intellectual disability. The aim is to provide these fellow residents with a familiar community, to work with them, and to help them develop at a personal level. The village consists of residential homes which operate based on sustainable principles. Businesses include a nursery, dairy farming, a cheese dairy, a bakery, and woodworking and metalworking shops.

wasler familienfoto 02Wood gasifier supplies local heating network with heat from wood chips

The Wäsler family, which owns the sanitation and heating construction firm of the same name, has been operating a local district heating network to heat 13 commercial units and 27 private households in Steinhausen, near Glonn. The network is 870 metres long, and is supplied by a Biomass CHP with an output of 45 kWel and 120 kWth. The generated electricity is fed into the public pipe network. The wood gasifier operates for around 6,000 hours a year.