Throughout the past decades, Bulgaria’s governments have focused almost exclusively on large conventional energy projects, such as nuclear plants or gas and oil pipelines, whereas small and decentralised renewable energy systems haven’t received much attention from politicians. But the large-scale projects are complex and expensive, so none of them have come to fruition. This is where the most current study by the Bulgarian Institute for Zero Energy Buildings (IZEB) comes in: It sends an important message to all stakeholders by describing a way to keep the entire Bulgarian capital of Sofia and its 1.2 million inhabitants warm without the use of any combustion fuel.
On 24 November, the fifth Solar Heat Switzerland (Solarwärme Schweiz) conference organised by the solar industry association Swissolar, the building services association suissetec and the Federal Office of Energy was held in Lucerne, Switzerland. As 2017 funding for solar heat incentives remains in doubt in several cantons and the priorities of the country´s energy policy haven’t been announced yet, the market outlook for solar thermal has not been very encouraging. But there seems to be a ray of hope in the form of low-temperature collectors for borehole regeneration and solar district heating. Click here to download the German-language presentations from the conference.
The recording of the webinar Think big - Design rules and monitoring results of solar district heating systems is now available. Experts from Austria, Denmark and Germany reported on the hot topics in SDH development: Use and performance of seasonal heat storage units for increasing solar coverage, distributed SDH plants connected to specific points of district heating grids as well as large centralised SDH plants employed in particular in Denmark and combined with other renewable energy sources. They emphasised the fact that solar district heating has an enormous potential and monitoring data shows the high reliability of the systems as well as the high performing new generation of collectors. You find the presentations as attachments below.
In spring 2015, Germany´s Federal Office for Economic Affairs and Export Control (BAFA) introduced a performance-based incentive for solar heating as an alternative to the scheme offering incentives based on collector area. Recently published statistics have shown the new programme to grant higher financial support for about one-third of the currently funded projects. The others still receive funding from the previously established scheme.
In cooperation with EU project SmartReFlex, solarthermalworld.org will soon hold the webinar Think big – Design rules and monitoring results of solar district heating systems. We invite every stakeholder to join the event scheduled online for 1.5 hours on Tuesday, 6 December 2016, from 2 p.m. to 3:30 p.m. Central European Time (time zone includes Berlin, Brussels, and Copenhagen). The webinar will be free of charge and will be open to anyone interested in the topic. You can register for it online.
Solar district heating is becoming increasingly attractive to small towns and municipalities which are looking for energy independence and stable heat prices, a trend which was discussed at length during the October webinar by the International Solar Energy Society (ISES). Entitled Renewable district heating – Small local grids and cooperative utilities, it offered an opportunity for German and Danish experts to present successful case studies, underline the political frame conditions which foster renewable integration into district heating and explain the advantages of cooperatives (recording available online). The photo shows the experts participating in this first webinar of a three-part series coordinated by Riccardo Battisti, Head of EU Project SmartReFlex: Per Alex Sørensen and Per Kristensen from Denmark as well as Oliver Miedaner from German Solites (from left). The second webinar – Think big: Design rules and monitoring results of solar district heating systems – will be organised in cooperation with solarthermalworld.org and is scheduled for 6 December (online registration).
After France had become involved in a couple of EU-supported projects as a newcomer, the country is now ready for take-off in the solar district heating (SDH) market. Monitoring data from the first two French pilot plants show performance to be quite good and the systems to be highly reliable. The chart depicting the performance of the 458 m2 evacuated tube collector field in Balma-Gramont was presented by Fabrice Renaud, Research Engineer in the R&D centre Cylergie at the French group Engie, during the 4th International Solar District Heating Conference in Billund, Denmark. There is also a new strategy document being devised to advance the development of SDH in the French region of Auvergne – Rhône-Alpes.
The summer school called City in Transition (Stadt im Wandel) ended with a public presentation of the project designs from four student groups on Monday, 26 September, in Berlin, Germany (see photo). During the previous week, students from different fields and German universities had developed a master plan for solar-optimised buildings in an area of Berlin’s Adlershof district. ”We educated students on how to combine town planning and solar energy usage,” explained Tanja Siems, one of the organisers of the summer school and Head of the Institute of Urban Design & Studies, Faculty of Architecture and Civil Engineering of the University of Wuppertal, Germany. Several experts from the IEA Solar Heating and Cooling programme’s Task 51, Solar Energy in Urban Planning, had supported the summer school as tutors or evaluated the final presentations.
The 4th International Solar District Heating (SDH) Conference, which had been organised under the auspices of Horizon 2020 project SDHp2m…from Policy to Market on 21/22 September 2016 in Denmark, showed the importance of analysing real-life monitoring data from European SDH plants, with one conference session (Advanced SDH systems II) dedicated exclusively to the topic. These kinds of comparisons enable an understanding of the actual performance of such large collector fields and offer an opportunity for optimising power output and for creating best-practice examples of new plants. For example, the chart displays ten years’ worth of monitoring data from the German plant in Crailsheim, which has met solar yield expectations.
Source: Attached SDH conference presentation from ITW
While the solar thermal industry has had a difficult time in several EU countries, the solar district heating (SDH) community is still growing: 180 participants from the EU, South Korea and China attended the 4th International Solar District Heating Conference, which was held at quite the peculiar location this year – Denmark’s Legoland – and was organised under the auspices of the Horizon 2020 project SDHp2m…from Policy to Market. The introductory session of the conference was really inspiring. Thomas Pauschinger, Project Coordinator of SDHp2m, underlined how Denmark’s construction of plants in the 100 MW range was proof of the country’s solar thermal strategy of “think big”. Impressive results, even more so if one takes the statement by Kim Behnke, Deputy Director General of Dansk Fjernvarme, the Danish District Heating Association, into account that “the Danish solar dream started just ten years ago”. Denmark’s solar installations have become so famous that they have even been turned into brick models at Legoland. The photo shows the 13 MW solar field in Braedstrup, Denmark.