We have our own Energy Challenges FOREST! Hey, it's really true. It has been in existence since spring 2022 and can even be visited in Hardenberg in Overijsel.

“The Energy Challenges FOREST”. We are very proud of it!

Now it is only very small, there are only 30 trees left, but the intention is that together we ensure that it will become a beautiful large forest. How can you help? By clicking on the link, choosing a tree, paying and the Treemendo Foundation will allow our forest to grow little by little in the next planting season.

We will of course keep you informed afterwards about how our forest is doing. On the special website, you can also take a digital look at the EC BOS on the interactive map.

As Energy Challenges, we are working every day to make young people more aware of their energy consumption ,and we teach them to use energy as sustainably as possible. Save as much CO2 as possible by using less gas, electricity and water.

CO2 that is released anyway, which we cannot do without energy, can also be stored in trees. In this way, we try to contribute to a better living environment.

With our 30 trees that have already been planted, we have already captured 3 tons of CO2, with which we compensate for 3 plane flights, 10 m2 of sea ice and 1333 km by car and create beautiful new nature. That's a good start, isn't it?

Will you help us plant a beautiful new forest?

Companies or organizations that want to compensate for their CO2 emissions are also very welcome. If you send us an email, we will calculate how many trees are needed as compensation ,and we will send an invoice for the purchase of those trees.

Questions call: 085-0230342 or mail to




Are you a real water rat? Search no further! The Alder is the perfect match for you. This tree loves water. The wood of the alder becomes stronger when it grows in water-saturated soil. Handy in a country like the Netherlands, of course. Did you know that for that reason a large part of Venice was built on Elspalen?

Is found in
The European Alder is native to Central Europe, Southwest Asia and North Africa.

Height & Age
The Alder can reach a maximum age of 120 years and heights of up to 30 meters.

Fruits & Flowers
Their buds can be up to 6 millimeters long and when they germinate they even double in length. Between April and May, the Alder has flowers for at least 4 weeks. Like the Hornbeam, this tree is monoecious. This means that the male and female flowers grow on the same tree. The flowers are pollinated by the wind, so energy efficient!

Did you know
“The Alder is best friends with the Frankia alni bacteria. This bacterium forms nodules on the roots of the tree and absorbs nitrogen from the air and converts it into food for the tree. In return, the bacterium gets carbon produced by the tree through photosynthesis. This barter improves the fertility of the soil and makes this bacterium and tree real pioneers!

Do you have a pollen allergy? Alder pollen, along with Birch and Hazel, is one of the main sources of tree pollen allergy. In Central Europe, tree pollen is the second most common cause of allergic reactions, after grass pollen. Health!"