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Alternative Energy

This concerns renewable energy that can actually be found in our municipality. The people referred to have agreed to the publication on our website and can be contacted as consultants for advice.

Wood-chip firing
Hackschnitzelheizung Gemeinde Kollnburg GmbH Wood-chip firings are fully adequate heating systems and very comfortable.
Compared to pellets they require a relatively large storage space and more powerful storage holding system (conveyor installation bodies with conveyor screws, inner spring holding systems, etc.) and storage entry systems (wheel loaders, etc.).

A wood-chip heating system is appropriate for 30 kW and more. For smaller installations pellet heaters are possibly better.
A proof of efficiency is especially recommended for small installations. In special chip firing plants the following fuels can also be used:
  • Wood scraps
  • wood remnants
  • industrial pellets
  • 6 mm quality pellets
  • planing and sawdust
Another very new wood-chip heating system is operated by the family Klimmer in Tafertshof.


Pellet Heating
Pelletheizung von Andreas und Christine Schmidt und PelletsA pellet heating system is run with wood pellets. These are just as convenient as oil or gas, but they cost less. These are pressed from wooden residuals that cannot be used as sawdust, plane chips.
Since wood pellets have a very high energy density, you need much less storage capacity than with other fuels such as pieces of wood.
The supply for a whole heating season can easily be stored in a closed, dry storage space. Storage tanks can e.g. be buried in the garden and will therefore not even disturb the appearance of the house. The delivery of wooden pellets occurs by a tanker and is pumped into the storage cellar.

Based on their size these heating systems have automatic transport screws or vacuumers directly to the burner, so you do not have to shovel.

The heating system is computer controlled, so that it can achieve an effectiveness of up to 95%. The combustion chamber remains permanently closed because the wood pellets will automatically be transported to it.

An example of a pellet heating system in the community Kollnburg is the heating of Andreas and Christine Schmidt in the district of Oed.


Biogasanlage der Familie HastreisterA biogas plant is used for production of biogas from biomass. In many cases, the resulting gas is used as electricity and heat in the connected power plant.

The process is that different raw materials, eg biowaste, liquid manure, sewage sludge, fats or plants are placed in a hermetically sealed fermenter. The biogas is then produced by fermentation and putrefaction.

There is a biogas plant located in the municipality Kollnburg in the district of Schwarzhof. Operators are the family Hastreiter.


Low energy house
Niedrigenergiehaus von Herrn Matthias KlinglLow-energy houses are buildings that have a very low energy consumption for heating and hot water.

Generally, the following criteria have to be taken into consideration for low-energy houses:
  • Location of the house and the local climate
  • Shape of the building sleeve, whether compact or rugged
  • Orientation of the main window faces: south
  • Room arrangement according to use (residential areas to the south, kitchen, bathroom and WC to the north, etc.)
  • Avoidance of thermal bridges (components, that transfer heat to the outside)
  • Insulation: outer insulation 20-40 cm thick, well-insulated roof, ceiling and basement ceilings
  • Use of controlled ventilation with 80% heat recovery from the outgoing air
  • Windows from two or three panes of heat-insulation glass
  • high air-tightness of building sleeve
  • Thermal solar hot water, and eventually heating
  • Energy-efficient heating systems (condensing boilers, low temperature boilers, wood heating)
  • Power-saving internal technology and household appliances
An example of a low-energy house in the community of Kollnburg is the newly built house of Mr Matthias Klingl, Am Bürstling.


Wasserkraftwerk von Josef Wieser Small hydropower refers to the use of hydraulic energy through decentralized, small hydro plants that operate under the same principle as large hydropower plants.

They differ primarily by efficiency class. Each year approximately 18 billion kWh of electricity are generated by hydropower. The share of hydropower in electricity generation is nationwide at approximately 3.5% (in Bavaria: 15%).

More information on federal and state promotion of hydroelectric power and for the revitalization of small hydropower plants can be found on our page "Useful Links".

In the municipality Kollnburg there are a dozen hydropower plants. One example is the plant of Josef Wieser in Hinterviechtach.


Wind Wheels
Windkraftrad Since more than a thousand years, the natural force of the wind is used by humans. The proportion of wind energy of total electricity consumption according to the DEW in Germany is currently at about 5.7 percent. The Federal Republic of Germany wants an increase of wind energy to 25% until 2020.

You can find more information about the functioning, the advantages and disadvantages, on further internet sites (see "Useful Links").

In the municipality Kollnburg there are two wind wheels.