Domestic Hot Water and Heating

  • underfloor heating system

    Concrete slabs store thermal energy and heat homes

    Many building owners consider roof-integrated solar systems to be a tried-and-true way of saving as much on their heating bills as they can. A research project called solSPONGEhigh and developed in Austria has shown: When using thermal mass, i.e., the capacity of a building to store heat in...
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  • Photo: EhSol

    3,300 m² for sports club in Brazil

    A 3,300 m² solar field is currently being built at one of Minas Tênis Clube’s four locations in Brazil. The system at the sports club in Belo Horizonte, in the province of Minas Gerais, is planned to meet 70 % of the water heating demand for five pools, including an Olympic one, and three...
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  • Task 51

    Lessons learned from urban solar projects

    Cities and municipalities are thought to play a decisive role in transforming energy systems. Urban planners, municipal stakeholders and consulting firms need case studies to demonstrate that solar energy can be integrated successfully into new and existing urban neighbourhoods. It is why...
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  • Photo: Sanqiaoneng

    New coating manufacturer in China

    Last December, Shandong-based Sanqiaoneng introduced a new line of absorber plates, which had taken five years to develop. According to the company website, Singaporean investment holding company Rowsley had spent USD 5 million on the design of a selective coating for these metal plates....
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  • Photos: Heat Changers

    Crowdfunding the Heat Changers campaign

    The German Solar Heating Initiative has put together a crowdfunding project to fund a consumer campaign called Heat Changers. Its initiators, Marisol Oropeza and Stefan Abrecht (first and second image from top left), have already brought some well-known supporters on board, including Markus...
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  • Renewable Energy Directive for 2030

    Europe’s first-ever renewable heating and cooling target

    After night-long negotiations, the European Parliament and Council have reached an agreement on the Renewable Energy Directive for 2030. At long last, discussions that started in November 2016 came to a close in the early morning of 14 June. The...
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  • SHW 1

    Rising demand for solar heat in large buildings and industry

    By the end of 2017, the market for solar heating and cooling had grown by 472 GWth, which again made it the largest for solar energy in the world. The one for photovoltaic systems gained 402 GWp to become the second-largest, and 5 GWel was enough for...
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  • Photo: Luca Degiorgis / Degmar

    Green hotel in Italy’s mountains

    Solar thermal performs well even in high-mountain areas during winter season. The installation shown in the photo is proof that combining solar and other renewable technologies, such as biomass boilers and a solar-assisted heat pump, results in a synergy that can be very productive. The...
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  • Graphic: Solar Payback

    A survey of the global market for concentrating collectors

    Concentrating collector technologies are becoming an increasingly popular choice for customers requiring industrial heat or space heating. This year’s Renewables 2018 Global Status Report includes, for the first time, data regarding new installations of concentrating systems....
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  • Source: California Public Utilities Commission

    California Solar Initiative dominated by multi-family houses

    In 2017, the California Solar Initiative (CSI) – Thermal Program supported the installation of 20,000 m² of collector area, a 20 % increase over the prior year. With 10,832 m², or four times the area installed in 2016, multi-family buildings dominated the subsidy landscape for those 12...
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  • Map: lonelyplanet.com

    Energy efficiency funding in Bosnia and Herzegovina

    The Jugoslav Wars of the 1990s slowed down the rate of energy-related retrofits in the residential and public sectors of Bosnia and Herzegovina. Recently, however, the country has seen some improvement in the amount of funding available for clean heating technologies, such as solar thermal...
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  • Logo UNHCR

    Solar showers for displaced people and refugees

    The UN Refugee Agency has begun ordering solar water heaters to improve the sanitary conditions in Ugandan refugee camps. The news ties in neatly with the first conference on Energy for Displaced People: A Global Plan of Action for Sustainable Energy Solutions in Situations of...
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