More and more Swiss cantons approve mandatory laws or requirements for a solar share in the domestic hot water supply of residential, public or commercial buildings. These solar water heating systems were built on a voluntary basis.
Solarthermalworld.org spoke with Manuel Collares-Pereira, R&D director of the Portuguese collector manufacturer Aosol, about the development of his company and the Portuguese solar thermal incentive programme. Photo: Aosol
The state of Rio de Janeiro is the front runner in terms of solar building codes on a state level. In January 2008, its state government approved a law that makes the installation of solar water heating systems mandatory for public buildings.
The huge city of São Paulo, with its approx. 19 million inhabitants, approved the first solar obligation on a municipality level in July 2007. Solar water heaters have since become mandatory in a wide range of new residential and non-residential buildings.
Solar water heaters and rainwater tanks become common place in Victoria´s homes nowadays. The reason for this development is a building code named 5 Star, which was implemented in the Australian state in 2005. The regulation affects all new houses and single storey units designed after the...
- Switzerland is finally taking on a broader approach to climate protection. The majority of the 26 cantons have adopted a regulation placing the maximum share of non-renewable energies in new heating systems at 80 %. This decision can be traced back to an initiative of the Conference of Cantonal...
Reducing the burden of the electricity load: a solar water heater in the city of Delhi. Photo: Koto Trade & Service
Solar is everywhere in Hawaii: This is the Helemano Army Family Housing project of the U.S. army near the city of Wahiawa. It possesses more than 400 solar water heaters. Photo: Sunearth
A recoupment period of two years: The University of Namibia in Windhoek replaced an oil boiler that had reached the end of its life cycle with 109 solar water heaters.
Photo: Namibian Engineering Cooperation/Solahart
Currently, solar water heating systems have hardly penetrated in Cape Town, South Africa. Only 2 % of city’s 906,000 households use solar energy. The planned bye-law should boost the market to 76,000 newly installed system in the next two years, but has been delayed due to continuous legal...