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Global Solar Hot Water Capacity Reaches 154 GWth as Market Faces Decline

As of 2006, the global solar hot water system capacity reached 108 GW, with China contributing 70 GW and an impressive growth rate of approximately 20% per year. In the USA, around 14% of energy is utilized for water heating. However, the market for glazed collectors in the 27 EU Member States and Switzerland declined by 9%, resulting in 1.9 GWth of new capacity. By the end of 2007, total operational capacity rose to 154 GWth, equivalent to 22 million m², reflecting both growth potential and challenges in the industry.

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Global Solar Hot Water Capacity Reaches 154 GWth as Market Faces Decline

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  1. Solar hot water Installed worldwide (2006): 108 GW, (70 GW in China); Growth rate: ~20% pa; Fraction of energy used for water heating (USA): ~14%

  2. The total market for glazed collectors in the 27 EU Member States and Switzerland decreased by 9% to 1,9 GWth of new capacity (2,7 million m2 of colector area). The total capacity in operation at the end of 2007 reached 154, GWth (22 million m2) The total market for glazed collectors in the 27 EU Member States and Switzerland decreased by 9% to 1,9 GWth of new capacity (2,7 million m2 of colector area). The total capacity in operation at the end of 2007 reached 154, GWth (22 million m2)

  3. Monthly averages of the Linke turbidity coefficient (TLK)

  4. Monthly averages of daily sum of clear-sky global irradiation (Ghc)

  5. Monthly averages of the clear-sky index (kc)

  6. September average Monthly averages of daily sum of global irradiation (Gh)

  7. Annual average

  8. x

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