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Remodece

Remodece. Energybox Progress Report Swiss Experience with Household Electricity Conrad U. Brunner S.A.F.E. Swiss Agency for Efficient Energy Use Zurich/Switzerland www.energy-efficiency.ch www.energybox.ch. Survey by Swiss Utilities. First Survey 1996: 1500 households

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Remodece

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  1. Remodece Energybox Progress Report Swiss Experience with 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 Prague

  2. Survey by Swiss Utilities First Survey 1996: • 1500 households • Electricity: consumption kWh/a from metering Second Survey 2004/05: • 1500 households • Electricity: consumption kWh/a from metering Questionnaire: • Equipment • Some behavior Results & Problems: • Only aggregated data published (privacy) • Calculations for disaggregated consumption (lighting, cooking, etc.) • Problems with typology of equipment (electric heating, hot water, etc.) Remodece Prague

  3. Energybox Last release 2005 • equipment (number, age) • behavior • complete consumption calculated/metered • proposition for improvement • Statistical analysis of survey: 1‘500 in 2006 New release 2007 • total consumption • focus on individual fields of energy consumption • statistical analysis off survey: 20‘000 in 2007 (8’000 complete/plausible) Bias • Discussion with Utility survey • Comparison with national household average Remodece Prague

  4. Questions User habits Remodece Prague

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  8. 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 Prague

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  10. Problem Nr. 1: Bias of Survey and Monitoring Results Theory of the clean survey • Random selection • Representative panel • No “other” goals (like energy efficiency) Reality • Gifts to clients (money, electricity, gadgets) • Panels (used regularly) • People with internet access • People who give you access to apartment • People who tolerate metering equipment in their apartment • People you know (your friends and colleagues) • People who spend 30 – 60 minutes on a questionnaire • Households near your office • Advertise in environmental magazines Remodece Prague

  11. Problem Nr. 2: Calculation vs. Metering Market survey for individual categories • Historical data for existing equipment 1985 - 2005 • Calibration with known households • Plausibility checks Reported metered data: client does not know how to read it properly • kWh/money (fixed elements, kW peak, kVAr, taxes, etc. • Period (year, 3 or 4 months) • Acconto/annual accounting • Elements included/not included (washing..) Remodece Prague

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  14. Problem Nr. 3: New Products & Habits Entertainment & home worker • Cameras, photo printers • Power drills • Lawn mower, blowers Toys • Kid‘s toys • Grown up toys Communication • Wireless phone • Satellite dish • Fax (dying) Safety • External lights Habits • Eating in restaurants • Holidays and weekend • Home office • Less “regular family” households Remodece Prague

  15. Who wants to use Energybox? What for? • The questionnaire • The Excel background calculation (Swiss calibration) • The graphs • The navigation (user interface) • The database (individual data storage) • The energy efficiency improvement (www.topten.info) Remodece Prague

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