Article 3Application of the harmonised efficiency reference values for the separate production of electricity#
1.Member States shall apply the harmonised efficiency reference values set out in Annex I relating to the year of construction of a cogeneration unit. Those harmonised efficiency reference values are applicable for 10 years from a cogeneration unit's year of construction.
2.From the eleventh year following the year of construction of a cogeneration unit, Member States shall apply the harmonised efficiency reference values which by virtue of paragraph 1 apply to a cogeneration unit of 10 years of age. These harmonised efficiency reference values are applicable for one year.
3.For the purposes of this Article, a cogeneration unit's year of construction is the calendar year during which the unit first produces electricity.