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Energy conservation and restructuring towards more energy-efficient technology have been keywords in Danish energy policy in the 1970s and 1980s. This has been reflected especially in domestic heating, where gross energy consumption per square metre has dropped approximately 45% from the early 1970s onwards. This drop is directly related to the massive expansion of combined generation of heat and power (CHP) effected in the same period. Consequently, some 30% of Danish heat requirements are now met by CHP. The intention is to increase this share by a further 7% over the next decade, resulting in a 37% share of Denmark's total heat requirements by CHP in the year 2000.  相似文献   
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