Reason no.


Sustainable heating

Pellets are a renewable natural product and, unlike oil and uranium, they will still be available to future generations.

Conclusion: Wood pellets are future-proof!

Reason no.


Environmentally responsible heating

Pellet combustion is CO2-neutral. During the course of their growth, trees absorb CO2 that is released again during combustion – just like natural rotting in the forest.

Conclusion: Wood pellets are a CO2-neutral fuel!

Reason no.


Economical heating

The price comparison makes it clear: Wood pellets, the ecologically clean way to heat, are also economically attractive. Compared with fossil fuels such as fuel oil and natural gas, wood pellets are significantly cheaper. They are not only good for the environment, but also your wallet.

Conclusion: Wood pellets save money!

Reason no.


Resource-saving heating

No additional trees are felled to make pellets. Residual wood from wood processing is used for this purpose. Furthermore, more wood grows back in Austria and Europe every year than is taken out of the forests.

Conclusion: Wood pellets make optimum use of the raw material wood!

Reason no.


Independent heating

Pellets are a home-grown natural product. With wood pellets, you are independent of international crises and global developments.

Conclusion: Wood pellets are always available regionally!

Reason no.


Heating with regional fuel

When purchasing wood pellets, the added value remains in the country. This boosts the domestic economy and creates new jobs.

Conclusion: Wood pellets strengthen our economy!

Reason no.


Convenient heating

Pellets are extremely easy to handle. They can be delivered conveniently by lorry. Charging of the boiler takes place automatically by auger or vacuum suction system and operation of modern pellet boilers is completely maintenance-free.

Conclusion: Wood pellets are the convenient way to heat with wood!

Reason no.


Compact storage

Pellets require only half as much space as logs and only a quarter of that for wood chip. A year‘s supply for a modern detached house can be stored in an area of approx. 4 m².

Conclusion: Wood pellets are a genuine space miracle!
More information in the ÖkoFEN pellet lexicon

Everything you
always wanted to know
about pellets

A little lexicon addressing the ecology, economy and security of pellets.

What are pellets?

Compressed, cylinder-shaped pieces of residual wood with a diameter of 6 mm and a length of 2 to 4 cm. These little "bundles of energy" have a high energy content and inherent density, an excellent calorific value and their combustion is environmentally friendly. The ash produced is works very well as a valuable garden fertiliser.

Where does the name "pellet" come from?

Pellet is an English word meaning "small, rounded, compressed mass of a substance". The old French term "pelote" means "ball" and, in Latin, "pila" means "bundle" or "pile".

What are pellets made of?

Of pure, natural, dry saw and machining dust, with no chemical additives. Preferably spruce, although with a small percentage of larch and pine wood as well. Small amounts (1 to 2 percent) of exclusively biogenic raw materials, such as corn starch or corn flour, may be added as compression additives.

How are pellets produced?

Wood shavings are dried and, if necessary, chopped into even smaller pieces. Then the shavings are pressed through a matrix. Finally, the pellets are cooled, sieved and stored in a silo.

Are there any quality standards or guidelines?

Premium pellets for private households must comply with standards ENplus and ÖNORM M 7135. The most important parameters of ÖNORM M 7135:


• Diameter: 6 mm
• Length: 30 to 40 mm (max. 1 percent up to 45 mm)
• Surface: smooth
• Density: min. 1.12 kg/dm³
• Bulk weight: min. 600 kg/m³
• Energy content: min. 4.6 kWh/kg
• Water content: max. 10%
• Ash content: max. 0.7%
• Fines content (before transport): max. 1%
• Binding agents: prohibited
• Impurities: none


Since 2010, new EU standard EN 14961-2 stipulates three common pan-European quality classes for pellets:


• Class A1 corresponds to that of the current ÖNORM
• Class A2 may have a slightly higher ash content (up to 1.5 percent)


Class B is used in the commercial and industrial sector and can have an even higher bark content as well as an ash content of up to three percent. Wood is the only permitted raw material for all three quality classes. This standard is the basis for the ENplus seal of approval, the new quality certification for pellets in the top segment.

© ÖkoFEN 2012

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