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This survey conducted by Remodece Coimbra provides insights into the electricity consumption habits of Swiss households, including usage patterns, appliances, and potential savings. A comparison with Germany is also included.
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Remodece Swiss Survey Results of Household Electricity Conrad U. Brunner S.A.F.E. Swiss Agency for Efficient Energy Use Zurich/Switzerland www.energy-efficiency.ch www.energybox.ch Remodece Coimbra
Total Electric Consumption ? yes/no: electric heating 7‘500 kWh/a General uses outside apartment: auxiliary heating, lighting for stairs, corridors, outdoors 12 % What almost everybody has: 3‘300 kWh/a Lighting, refrigerator/freezer, washing/drying, cooking/baking/dish washing, telephone, TV, audio, settop box, home office, games, AC/DC trafo charger stand by, etc. yes/no: electric hot water 3‘600 kWh/a 36 % general use yes/no: electric cooking 350 kWh/a 90% What few people have: Aquarium, sauna Remodece Coimbra
Surveys Switzerland • Electricity Utilities 2005: telephone interview • clients in different areas measured consumption • complete test 30 questions • Energybox 2003 – 2007: web questionnaire • Quicktest 10 questions • Complete Test 39 questions • Specific Topic Test 10 areas Remodece Coimbra
Comparison: Germany - Switzerland Remodece Coimbra
Quick Test Remodece Coimbra
Persons by age Remodece Coimbra
Total consumption by size of apartment Remodece Coimbra
Single family – multiple occupancy building Remodece Coimbra
Electric heating and warm water Remodece Coimbra
Refrigerator and freezer Remodece Coimbra
Refrigerator age Remodece Coimbra
Refrigerator volume Remodece Coimbra
Washing machine: age Remodece Coimbra
Use of tumble dryer Remodece Coimbra
Dish washer Remodece Coimbra
Age of dish washer Remodece Coimbra
Cooking habits Remodece Coimbra
Office equipment Remodece Coimbra
Home entertainment Remodece Coimbra
TV Standby Remodece Coimbra
Lighting: number of lamps Remodece Coimbra
Lighting electricity Remodece Coimbra
Weekly use Remodece Coimbra
All applications Remodece Coimbra
Savings potential Remodece Coimbra
b Remodece Coimbra
Lessons learned Sample quality Heat processes are crucial Elt. heating systems: how and how long? Elt. hot water: how and how much? Warm meals: devices and habits Wrong answers Plausibility check (upper/lower limits) Median not average Air conditioning: none in the sample Home office is worse than real office Older equipment, multi-people use, games, stand-by Clothes dryer Large savings potential with heat pump Lighting has big savings potential Remodece Coimbra
Total consumption: Measured vs. surveyed Energybox „measured“ 3‘976 kWh/a 100,0 % Energybox „calculated“ 4‘113 kWh/a 103,6 % VSE „measured“ 3‘797 kWh/a 95,5 % Remodece Coimbra
Total consumption: Germany vs. Switzerland • Total electricity consumption: pretty close • Switzerland (measured) 3‘976 kWh/a 100,0 % • Germany 3‘474 kWh/a 87,4 % • Germany: ~ population a little older • less one family houses • less electric space heating • less electric hot water • less refrigerators with freezer compartment • less home offices and TV + more incandescent lamps Remodece Coimbra