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Home / Articles and Press Releases / Press Release / Solar Power Could Cover 80% of Nordic Heating

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Press Release

Solar Power Could Cover 80% of Nordic Heating

By Aalto University

| Read Bio

Published: June 21st, 2017

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According to researchers at Aalto University, by using suitable systems, more than 80% of heating energy for Finnish households could be produced using solar energy. As the price of heating energy obtained from solar heating systems needed to be competitive with the currently used heating alternatives, calculations made by researchers showed that renewable energy could be used to cover 53–81% of annual domestic heating energy consumption depending on the technical implementation method.

‘In principle, this result is also valid for Sweden, Norway and other locations at the same latitudes. Of course, local conditions have some effect on this,’ says Hassam ur Rehman, a doctoral candidate at Aalto University.

The researchers calculated the amount of solar heat obtained for heating the households when excess energy was stored for use during cold periods. The researchers calculated the amount of heat obtained for practical use when energy for heating households was accumulated using solar heating and the accumulated heat was stored for use during cold periods. In their calculations, the researchers studied the use of both above-ground water storage tanks for short-term heat storage and a borehole storage suited for seasonal storage. The results depended on the method of how the heat pumps and the water storage tanks and the borehole storage for storing heat were used together.

The heating of buildings is one of the largest sources of carbon dioxide emissions in Europe. In the EU, this heating takes up 40% of all energy consumption.

‘In Finland, more than 80% of the energy consumption in households goes to heating buildings and water, and this is on the increase. Solar energy offers economically sensible solutions for the collection of energy for this purpose, and for the reduction of carbon dioxide emissions, especially in southern Finland where the majority of the population lives,’ says Kai Sirén, Professor at Aalto University.

The decrease in prices has already made solar energy a viable alternative in the energy market in the Nordic countries as well. For example, in Denmark, the use of solar energy in district heat production has rapidly increased.

Sirén feels that it is important to continue the research work, which will require measurement results on a system built and implemented in Finland.

‘We are talking about a computational result which includes factors of uncertainty even if the initial values have been carefully selected and the simulations conducted meticulously,’ Sirén reminds us.

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ABOUT THE AUTHOR

Aalto University

Aalto University is a multidisciplinary community where science and art meet technology and business. We are committed to identifying and solving grand societal challenges and building an innovative future.

Aalto University has six schools with nearly 20 000 students and 4 000 employees, 386 of whom are Professors. There is a wide variety of Bachelor’s and Master’s Degrees awarded at Aalto University, and we also offer doctoral programmes in all the fields of study.

Aalto University was founded in 2010 as Helsinki University of Technology, the Helsinki School of Economics and the University of Art and Design Helsinki were merged. The main campus is located in Otaniemi in Espoo, Finland. The other campuses are in Töölö and Arabia in Helsinki.

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