The 191 solar process heat projects which have made it into the online database http://ship-plants.info/ add up to an installed capacity of 0.11 GWth (0.159 million m²), which is only a small fraction of the potential estimated for this type of application. To quantify the technology’s global opportunities, the researchers from the now-completed four-year Task 49 / IV, Solar Heat Integration in Industrial Processes, analysed the results of several national studies which had tried to determine the potential of solar process heat while considering restrictions such as temperature range and the space available for the systems (see the chart on the left). “For Europe, where mainly non-concentrating collectors had been investigated, the percentage of technical potential for solar process heat related to the total industrial heat demand is around 3 to 4 %,” was the conclusion by the authors of the attached report Potential studies on solar process heat worldwide.
After seven years, the IEA Solar Heating and Cooling Programme (IEA SHC) is planning to launch another international research cooperation on PVT technology. PVT includes panels which combine photovoltaics and solar thermal into one unit either as glazed or unglazed systems. The first and only task on PVT systems was completed in June 2010. The new one, entitled Application of PVT Collectors and New Solutions with PVT Systems, is in the definition phase. It is expected to start in July 2017 and run for 3.5 years. Interested researchers and industry representatives have been invited to attend a two-day workshop at ETH university in Zurich, Switzerland, from 16 March (1 p.m.) to 17 March (12 a.m.) in order to discuss crucial aspects and the structure of the global initiative.
Chart: Jean-Christophe Hadorn, Swiss energy consultant, contracted by the SFOE, Switzerland
The recent approval of Working Rules means that the Global Solar Certification Network (GSCN) can now accept membership applications. The reuse of test and inspection reports in different certification schemes will be possible at the beginning of 2017. The GSCN was developed in Task 43 of the IEA Solar Heating and Cooling Programme to facilitate the cross-border trade of high-quality solar thermal products. The world map shows all the certification schemes which are already on their way into the GSCN – and more are said to follow soon. GSCN industry members can use a collector test report or a production inspection report from one of these schemes to apply for a certificate in another part of the world which is also part of GSCN. The procedure saves manufacturers time and money by removing the need for collector retesting or a second site inspection.
Whether investors put their money into large-scale concentrating solar heat and power systems, solar district heating plants or photovoltaic fields, they need to be able to rely on data sets to include the uncertainty and variability of input information. Financial institutions do like to know in what way these factors can impact revenue flows in financing, so researchers of IEA SHC Task 46, Solar Resource Assessment and Forecasting, have spent several years analysing various approaches to the topic. The flow chart of the financing model shows that solar resource data is essential to a proper assessment of the average power or heat generation per year as well as the range of variability over several years. SHC Task 46 is a five-year collaborative effort (2011-2016) with support from the IEA SolarPaces Programme (Task V) and the IEA Photovoltaic Power Systems Programme (Task 14).
From 11 to 14 October, more than 300 experts in solar energy met in Palma de Mallorca for the EuroSun 2016 conference. Organised by the International Solar Energy Society (ISES) in cooperation with the University of the Balearic Islands (UIB), the conference is attended mainly by scientists and industry stakeholders from the solar heating and cooling sector. But for the first time, speakers also included well-known specialists from the photovoltaics sector. Two panel discussions illustrated the wide range of opinions on solar heat and solar electricity market development and the technologies' competitors. The photo shows Professor Eicke Weber (middle), newly elected Vice President of ISES and Director of the Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) based in Freiburg, Germany, and two of the three conference chairs: Professor Wolfgang Streicher (left) from the University of Innsbruck, Austria, and Professor Víctor Martínez Moll (right) from the UIB.
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.
LED technology has greatly changed the face of the lighting market: In just a few years, lighting systems have become twice as efficient and half as expensive. These changes have resulted in a large but often untapped cost- and energy-saving potential in commercial buildings. The research in Task 50 of the IEA Solar Heating and Cooling programme, Advanced Lighting Solutions for Retrofitting Buildings, has shown that the lighting industry is increasingly exploring opportunities for the use of contracting instead of leasing solutions to convince customers of retrofits. According to Marc Fontoynont, Professor at the Department of Energy Performance at Aalborg University, Denmark, and subtask leader of Market and Policies, there is a growing number of specialised companies which offer contracting models for lighting solutions, such as Austrian manufacturer Zumtobel has done with its contracting plan Now! (see chart). All in all, these contracting solutions are less complex than the ones for heat.
How can urban planners be convinced to consider solar energy technologies in municipality projects? This is the key challenge faced by the international group of researchers of Task 51, Solar Energy in Urban Planning. One way to attract interest from these planners is to present them with case studies of successfully implemented solar projects. So the members of Task 51 headed by Maria Wall, Professor at the Energy and Building Design department of Sweden’s Lund University, have collected around 40 solar case studies and are about to design a brochure for all of them. The authors distinguish between three types of studies: new urban areas, existing urban areas and landscapes.
System cost reduction is one of the most urgent challenges of the solar thermal sector, especially in central Europe. The aim of Task 54 of the IEA Solar Heating and Cooling Programme, Price Reduction of Solar Thermal Systems, is to lower solar heat prices by up to 40 %. Germany’s main scientific contributions to the task have come from the two research projects KoST and TEWIsol, which have been co-funded by the German Federal Ministry for Economic Affairs and Energy. The corresponding Task 54 meeting will take place in Stuttgart on 6/7 October (see the attached programme) in conjunction with a workshop on 5 October to present and discuss KoST and TEWIsol (12 p.m. to 4 p.m.; held in German). The photo shows the Task 54 workshop organised in collaboration with the European Solar Thermal Industry Federation in Brussels in May 2016.
Seasonal storage is a key component in the transformation of today’s energy industry. Besides storing energy in summer for heating in winter, it can also be used to save waste heat from the industry and to increase the electricity production from biomass CHP plants. Experiences gathered with the technology during case studies were summarised as part of the study Seasonal thermal energy storage – Report on state of the art and necessary further R+D, which was published by Task 45, Large Scale Solar Heating and Cooling Systems, of the IEA SHC programme. Together with the Guidelines for Materials & Construction on the two most common storage types, borehole (see the chart) and water pit, it provides a good overview of the current advancements in this field (all three documents attached). Additional research into the design of seasonal storage will be carried out in follow-up Task 55, Towards the Integration of Large SHC Systems into District Heating and Cooling (DHC) Network. Interested stakeholders have been invited to join the kick-off meeting of Task 55 in Graz, Austria, between 19 and 21 October (see contact details below).