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Energy efficiency


 
The energy efficiency class supplies information on the energy consumption of technical devices, buildings or automobiles. The energy efficiency classes were classified into different categories and named based on the American school grading system, with "A" being the best energy efficiency class (low consumption) and "G" describing the highest consumption level. The scale for quality category A was already defined in 1994 and it corresponded to the latest technological standards at the time of realisation. In order to be able to reflect new technological developments, in particularly with regard to electrical and household appliances, additional efficiency classes (A+, A++, A+++) were introduced for some products such as refrigerators, washing machines or TVs.
 

Costs and savings potential of light sources

The following table provides an overview of the costs as well as the savings potential of different illuminants in comparison to conventional incandescent lamps. The column "Savings per year" contains the amount that can be saved when using the respective illuminant. The "energy costs per year" for the conventional incandescent lamp are used as reference value.

 
Lamp type
Wattage, lumens
Energy cost per year ¹*
Savings per year ¹*
 
Incandescent lamp Phase-out model

  
5 - 15 lm/ W ²*  
 
75 W,
950 lm
23,00 €
-
230V eco halogen lamp
  
10 - 18 lm/ W ²*  
 
60 W,
980 lm
18,40 €
4,60 €
  • 12V eco halogen lamp

      
    20 - 27,5 lm / W ²*  
     
    35 + 4 W,
    860 lm
    11,94 €
    11,04 €
  • Energy saving lamp, compact fluorescent lamp

     
    35 - 65 lm / W ²*  
     
    18 W,
    970 lm
    5,52 €
    17,48 €
  • T16 fluorescent lamp

      
    60 - 90 lm / W ²*  
     
    2*
     
     
  • LED integrated in the light

        
    40 - 120 lm / W ²*  
     
    5 x 3,3W,
    17W,
    1.050 lm
    5,21 €
    17,78 €
  • LED retrofit 230V lamp, E 27

      
     
     
    17 W,
    1.050 lm
    4,20 €
    18,80 €
  • LED retrofit 12V lamp, GU5,3

      
     
     
    2*
     
     
¹* On the basis of 28 ct / kWh and 1095 hours of service life in one year and an average use of 3 h per day with a reference
value of 75 W and €23 / year, given a conventional incandescent light.
²* Currently no illuminant with a comparable luminosity available
 

Please also read the information on Service life


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