Think Energy Lunchtime Talk presentation
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This document outlines various ways to save energy at home through reducing heating costs, using appliances efficiently, and switching to more efficient lighting. It notes that heating accounts for 60% of energy use in the home and recommends insulation measures like attic insulation, cavity wall insulation, and draught proofing which typically pay for themselves within 2-4 years. Additional tips include controlling thermostats, taking shorter showers, running full loads of laundry, and not leaving devices on standby mode overnight which can account for 8% of electricity use. Switching to LED lights and more efficient appliances can significantly reduce annual energy bills.
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Think Energy Lunchtime Talk presentation
- 1. Saving energy at home Dublin City Council 28 January 2014 Marion Beaver On behalf of
- 2. Major uses of energy in the home 60% 14%3% 23%
- 3. Heat losses from an un- insulated house Roof 30% Windows & doors 20% Ventilation 15% Floor 10% Walls 25%
- 4. Saving energy at home • Heating • Lighting • Electrical appliances Do you know how much your bills are?
- 5. Typical energy bills • Electricity 22c per unit (kWh) – Annual bill ~ €1200 • Gas 7c per unit (kWh) – Annual bill ~ €1300
- 6. Heating
- 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
- 10. Saving energy: hot water • Hot water cylinders • Showers vs baths – Shower timers • Full washing loads • Wash at 30C • Filling kettles
- 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. Standby energy • 8% of total electricity demand used overnight • Switch off at the wall • Red standby light uses energy
- 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. Lighting
- 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. 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)
- 18. Keep it cool • Set nearer 5 degrees C than zero • Avoid putting hot food into fridge or freezer • Food safety first
- 19. Appliances - buying • When buying new white goods – EU label rating – Annual energy consumption – Annual cost to run • Water usage for washing machines
- 20. Appliances - using • Use existing items sensibly – Check usage of an item – Minimise tumble dryer use – Don’t overfill the kettle
- 21. Saving energy: top tips • Switch to energy efficient lights • Draught proof doors and windows • Control your heating • Don’t leave electrical items on standby overnight • Fit a hot water tank jacket • Energy monitors to find how much each appliance uses