Domestic Hot Water and Heating

  • Austria: Solar Thermal Mandatory for Housing Assistance

    Austria: Solar Thermal Mandatory for Housing Assistance

    Solar showcase in Austria: This single family house in Tyrol generates a 30 % share of the domestic hot water and heating demand from renewable energies. Since 2008 more and more Austrian states have required an ecological heating system, if homeowners want to profit from housing...

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  • Netherlands’ Subsidy Programme Expands the Market

    Netherlands’ Subsidy Programme Expands the Market

    Since 2006, the solar thermal market in the Netherlands has enjoyed an annual growth rate of 20 – 30%. The currently biggest pieces of the pie go to glycol-drainback solar combination systems (<6 m²). The new incentive programme “Duurzame Warmte” (Sustainable Warmth programme) now offers an...

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  • Sweden: Increased Subsidy Budget

    Sweden: Increased Subsidy Budget

    Solar roof in the Swedish city of Onsala: The increased subsidies in Sweden focus on larger collector fields – like the 220 m2 plant from 2005.
    Photo: Jan-Olof Dalenbäck

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  • Solar Obligation for Public Buildings in Namibia (2007)

    Solar Obligation for Public Buildings in Namibia (2007)

    Namibia has successfully implemented a directive in 2007 which requires SWH on all new public buildings, on existing public buildings without water heaters and existing public buildings with electric geysers. Namibia could reduce its peak electricity demand by almost 20 MW thanks to this...

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  • Chiryu Heater: 46 Years of Collector Manufacturing in Japan

    Chiryu Heater: 46 Years of Collector Manufacturing in Japan

    Second oldest collector manufacturer worldwide: the Japanese company Chiryu Heater which is run by Yasuo Okamoto. He told solarthermalworld.org the history of the company that his father Ei-ichi Okamoto founded in 1944.
    Photo: Bärbel Epp

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  • Portugal: Unclear Conditions with the Incentive Programme

    Portugal: Unclear Conditions with the Incentive Programme

    “The intentions were good, but the implementation was very confusing. When the programme started in March, the market players were not informed and only one company met the conditions of it”. This is how Jorge Vaz from the Portuguese collector manufacturer Openplus Energy...

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  • Tokyo Gas launches balcony-integrated Collector

    Tokyo Gas launches balcony-integrated Collector

    Japan´s large natural gas company, Tokyo Gas, started producing a collector panel that can be integrated into balconies. The low-cost system is a combination of solar panels and a gas water heater. Photo: Tokyo Gas

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  • Solar Cooking in Central American Solar Energy Project (CASEP)

    This document and website provide detailed information about the Central American Solar Energy Project (CASEP), which promotes the construction and use of solar cookers in countries such as Guatemala, Honduras, Costa Rica and Nicaragua. The project has an environmental purpose - promoting the...

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