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According to a study commissioned by Finnish Energy (ET) and Sitra, there seems to be considerable demand for two-way district heating, allowing customers to both use and sell heat. The study found that such a two-way network can make effective use of small-scale production and that customers are interested in the development of district heating products and network use. Two-way district heating can also increase the energy efficiency of heating, reduce emissions and increase the competitiveness of district heating companies.