News and Articles
30/03/2012 | News, Newsletter April 2012
Slovenia’s first Solar District Heating plant started operation

A consortium of Slovenian and Austrian completed the first large scale solar thermal plant in Slovenia in March 2012. Solar collectors with an area of 842.3 m² feed their energy into a storage tank of 93 m², which in turn feeds into the district heating grid of Vransko.

So far the heat was supplied by four boilers (biomass and oil). Together with the investment into a solar thermal system the puffer tank was installed to manage the loads on the grid.

Special high temperature collectors are mounted on the roof of the production hall of the neighboring company KIV. KIV is specialized in production of tanks and vessels and supplied all vessels for the project.

The heat from the collector field is transported in partly underground pipes to the technical hub of the heat plant of the district heating network. In the transmission station the solar loop and heating loop are linked through heat exchangers. The facilities have been dimensioned for a maximum capacity of 1 MW solar thermal heat capacity (1500 m²), which might be developed at a later stage.

Currently all parameters of the solar thermal system are optimized, especially the operation periods of the biomass boilers in combination with the solar thermal system need to be monitored and fine tuned. This happens through the tele-monitoring from Austria. Further the operator of the plant puts his efforts towards reducing the rather high temperatures of the return flow from the grid. Such achievements would increase the efficiency of the solar thermal plant as well as increase the ecologic and economic performance of the grid.

Besides the solar thermal plant a photovoltaic system for electric power production has been installed.

Lessons learned in this project are that it is quite complex to coordinate a project with local and international suppliers as well as local and international funding schemes. In addition, large projects with biomass and solar thermal are quite new in Slovenia. So far main source for renewable energy in Slovenia has been hydro power. From July 2012 on, University of Lubljana will be partner in the project SDHplus and will develop jointly with European partners the framework conditions for Solar District Heating in Slovenia.
 

Further information:
in Slovenian: http://www.energetika-vransko.si
in English: http://www.solid.at
 

 

Participate in the upcoming SDH events
Participate in the upcoming SDH events

Save the date! The 5th International Solar District Heating Conference will take place on 11 and 12 April 2018 in Graz, Austria.

See our event calender for other upcoming events

NEW Brochure and Project Leaflets
NEW Brochure and Project Leaflets
European Large Scale Solar Heating Plant Database
European Large Scale Solar Heating Plant Database
Download all SDH guidelines in one file
Download all SDH guidelines in one file
Find professionals
Find professionals
Click here to find business partners, component suppliers, consultants and service providers with long term experience on the field of solar district heating!
SDH related projects
SDH related projects

Discover other european RTD and policy projects related to solar district heating:

click here