The heat entrepreneurs have been actively involved in the latest developments of the solar power in North Karelia, Finland. Several investments will take place this autumn to provide renewable electricity for district heating plants.
Finnish heat entrepreneurship is mostly based on biomass. The number of heating plants has increased steadily between the early establishments in 1990’s, to 330 plants in 2006 and 618 in 2015. About 25 % of the plants were connected to the district heating network, and the median size of the heating plants is 500 kW. The heat enterprises are mostly private companies (43%), cooperatives (12.7%) and other types of firms, mostly single entrepreneurs (44.5%).
The heat entrepreneurs have become increasingly interested in solar power integrated to the heating plans. The plans have stable electricity consumption profiles, i.e. less hourly variations compared to many other end-users. The systems require very limited service and maintenance work, and profitability is better than in solar thermal. The economic analyses indicate that the new investments in DH plans located in North Karelia will have approximately 11-15 years paybacks and 5-9 internal interest rates.
The Power from the Sun project, run by Kim Blomqvist from GREBE project partner Karelia UAS, has supported the establishment of the systems in four energy enterprises in Eno, Tuupovaara, Kiihtelysvaara, Kontiolahti and Biowin Karelia Ltd. The investments have received 25% energy support from the Finnish Funding Agency for Innovation. Seven solar power plans have total capacity of 70 kW, varying between 5 to 21 kW, and estimated annual production is 52 000 kWh. The systems will be provided by a local company Mirotex Ltd. and installed in September.