Carbon neutral heating system for Vanajanlinna buildings – city of Hämeenlinna joins in energy reform

Tourists are showing increasing interest towards sustainable development, responsibility and greener energy solutions. Hotel Vanajanlinna, Linna Golf’s properties and the majority of other properties in the area will convert from natural gas to heating and cooling through the geoenergy solution provided by Adven.

A couple of years ago, Vanajanlinna’s Executive Director Pekka Vihma started looking into alternatives for natural gas based heating. Originally, Vanajanlinna was heated with oil, then with early geothermal solutions and, over the past few years, with natural gas.

“Costs and values were the main two reasons for converting to geoenergy. The Group’s own measures were not enough to achieve the desired savings in energy costs. With natural gas, costs were governed by, among other things, changes in tax legislation and increases in the raw material price. We also wanted to foster sustainability and environmental values and increase the use of renewal energy,” says Vanajanlinna’s Executive Director, Pekka Vihma.

According to Vihma, customers are increasingly interested in the energy sources used by the hotel.

“Sustainable tourism is emerging. Today’s customers are increasingly aware of sustainable choices. People already choose their destinations based on whether they are in line with their values. Even though the change is not a direct competitive advantage, it strongly supports our communications,” Vihma says.

“We have implemented similar sustainable solutions also for other players in the tourism sector, for example in Northern Finland. Geoenergy is easy to implement in a historic building, because it does not require any major changes to be made inside the building itself; the changes mainly concern the technical rooms,” says Timo Koljonen, Adven’s VP of Geoenergy.

Geowells will be drilled in an area owned by the city of Hämeenlinna

The decision was made jointly by the city of Hämeenlinna, and the entrepreneurs operating in the area, KKOy Vanajanlinnan Golf Suites and Linna Golf Oy, and Vanajanlinna hotel-restaurant company. All parties involved are convinced that they will benefit from the change.

“I was thrilled to discover that the city of Hämeenlinna, which owns the majority of the properties and the land, shared our values. We all wish to be responsible players and use renewable energy. In addition, this is an economically viable option,” Vihma says.

No costly investments and long payback periods

Vanajanlinna purchases energy as a service from Adven, which means that there was no need for the companies in the area to invest in equipment or build a geoenergy field.

“For a player of our size, it was impossible to invest in the necessary equipment ourselves, which would have meant years before achieving any savings. Furthermore, we operate in rental premises,” Vihma says.

“One of the reasons we chose Adven was that they won us over with their experience, background, size and investment capabilities. And very few players can promise savings from day one,” Vihma adds.

The geonergy drilling work will be carried out in Vanajanlinna during this spring and summer. The new system will be operational by next autumn’s heating season.

Quick facts:

-  Geoenergy is used to produce both cooling and heating for the buildings in the area; the solution is totally carbon neutral.

-  The price of energy is stable and transparent. Energy costs are reduced from day one.

-  The solution is self-sufficient in terms of energy: energy is produced locally on the property’s site.


For more information:

Timo Koljonen, VP of Geoenergy, Adven, +358 050 4666999, 

Pekka Vihma, Executive Director, Vanajanlinna, +358 50 403 5444, 


The company currently operating in Vanajanlinna was established in 1989 and acquired in 1998 by Pekka Vihma (Executive Director) and Mika Walkamo (Chairman of the Board) from Hämeenlinna. In 2011, the expansion of the ownership base led to the creation of Vanajanlinna Group with Hotel Vanajanlinna as its flagship. Vanajanlinna Group has operations in Hämeenlinna, Janakkala, Lahti and Levi.