think energy lunchtime talk presentation

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  1. 1. Saving energy at home Dublin City Council 28 January 2014 Marion Beaver On behalf of
  2. 2. Major uses of energy in the home 60% 14%3% 23%
  3. 3. Heat losses from an un- insulated house Roof 30% Windows & doors 20% Ventilation 15% Floor 10% Walls 25%
  4. 4. Saving energy at home Heating Lighting Electrical appliances Do you know how much your bills are?
  5. 5. Typical energy bills Electricity 22c per unit (kWh) Annual bill ~ 1200 Gas 7c per unit (kWh) Annual bill ~ 1300
  6. 6. Heating
  7. 7. Reducing heating costs - insulation Payback periods Hot water tank < 6 months Loft insulation 2 years Cavity insulation 4 years Double glazing > 20 years Floor insulation 2 years Draught proofing 4 years
  8. 8. Controlling heating costs Individual thermostats Programmers
  9. 9. Draught proofing
  10. 10. Saving energy: hot water Hot water cylinders Showers vs baths Shower timers Full washing loads Wash at 30C Filling kettles
  11. 11. Reading your meters 0 10 20 30 40 50 60 70 80 90 100 July 1July 2July 3July 4Aug 1Aug 2Aug 3Aug 4Sep 1Sep 2Sep 3Sep 4O ct1O ct2O ct3O ct4 0 1 2 3 4 5 6 7 Electricity Gas Away on holiday Visitors
  12. 12. Standby energy 8% of total electricity demand used overnight Switch off at the wall Red standby light uses energy
  13. 13. Standby consumption Home Electrical Equipment Power Consumption (W) On and active On but inactive Standby Off Computer and peripherals: Computer box 80 55 2 Cathode-ray display 110 3 0 LCD display 34 2 1 Laser printer 500 17 Wireless & cable-modem 9 Laptop computer 16 9 0.5 TV 100 10 Digital radio 9.1 3 Digital TV set top box 6 5 DVD player II 12 10 5 Xbox 160 24 Sony Playstation 3 190 2 Ninetendo Wii 18 2 Mobile phone charger 5 0.5 Vacuum cleaner 1600 Source: www.withouthotair.com
  14. 14. Lighting
  15. 15. Reduced annual energy bills = 128.48 x 4 hours a day x 22c /kWh x 4 hours a day x 22c /kWh = 14.13 x 365 days x 365 days 4 x (100W) 4 x (11W) Replacing incandescent with CFL (compact fluorescent)
  16. 16. Reduced annual energy bills = 64.24 x 4 hours a day x 22c /kWh 4 x (50W) x 4 hours a day x 22c /kWh 4 x (5W) = 6.24 x 365 days x 365 days Replacing halogen with LED (light emitting diode)
  17. 17. Keep it cool Set nearer 5 degrees C than zero Avoid putting hot food into fridge or freezer Food safety first
  18. 18. Appliances - buying When buying new white goods EU label rating Annual energy consumption Annual cost to run Water usage for washing machines
  19. 19. Appliances - using Use existing items sensibly Check usage of an item Minimise tumble dryer use Dont overfill the kettle
  20. 20. Saving energy: top tips Switch to energy efficient lights Draught proof doors and windows Control your heating Dont leave electrical items on standby overnight Fit a hot water tank jacket Energy monitors to find how much each appliance uses
  21. 21. Further information http://www.seai.ie/Power_of_One/ http://www.seai.ie/Grants/Better_energy_homes/ www.codema.ie/thinkenergy