Energy in Your Home Jake Mathias – Private Sector Housing Manager, Housing Department, Westminster Council
Energy in Your Home Westminster Profile • 115,000 Homes • Average home in London = 5.3 tonnes of Carbon • Social Housing - 29% • Private Renting - 36% • 55 Conservation Areas • 90% of dwellings are flats • 63% of private dwellings built pre 1919 • At least 63% of dwellings have solid walls
Energy in Your Home Energy Efficiency: Easy Measures
Energy in Your Home • Turn your thermostat down by 1 C - can reduce heating bills by approx 10% - use your programmer to turn on heating when needed
Energy in Your Home • Only boil as much water as you need - but remember to cover the elements if you're using an electric kettle - Eco kettle – EST recommended Date
Energy in Your Home • Turn appliances off at the wall when not in use - cut electricity to all selected appliances using one switch - Bye Bye Standby Date
Energy in Your Home • Use energy efficient light bulbs - last up to 10 times longer than normal bulbs - use up to 80% less electricity than a normal bulb - Government phasing out normal bulbs by 2012 Date
Energy in Your Home • Install Energy / Smart Meters - Energy meter – shows energy used by different appliances - Smart meter – two-way communication system, displays real-time energy use Date
Energy in Your Home • Buy energy efficient appliances - Energy Saving recommended fridges use up to 60% less electricity - Energy Saving recommended dishwashers use up to 20% less electricity and less water - Integrated Digital TV Date
Energy in your Home • Install a hot water tank jacket Hot water Tank Jacket DIY Cost £12 Annual Saving £35 DIY Payback under 6 months Annual CO 2 savings 190kgs Date
Energy in Your Home • Install Curtains and Shutters - Draw curtains at dusk to keep the heat in - Shutters reduce heat loss and provide privacy Date
Energy in Your Home • Install low flow Shower heads - aerated shower heads - non-aerated shower head Date
Energy in Your Home • Install a chimney balloon - Stops chimney draughts - Reduces heat loss - Reduces noise Date
Energy in Your Home • Maintenance - Bleed radiators and power flush the system - Service the boiler - Defrost the freezer - Sealing gaps in floorboards Date
Energy in Your Home Energy Efficiency: Major Measures Date
Energy in Your Home 25% ROOF 15% DRAUGHTS 10% WINDOWS 35% WALLS 15% FLOOR Date
Energy in Your Home Heating System Condensing boiler upgrade (G rated to A rated) Installed cost £2,000 Annual saving £235 Payback Period 9 years Annual CO 2 savings 1,300kg Date
Energy in Your Home Draught Proofing Draught Proofing Installed Cost £200 Annual Saving £25 Payback period 8 years Annual CO 2 savings 130kg Date
Energy in Your Home Loft Insulation Loft Insulation top-up from 0 to 270mm Installed cost £300 Annual saving £150 Payback Period 2 years Annual CO 2 savings 620kg Date
Energy in Your Home Wall Insulation Internal Solid Wall Insulation Material cost £35/m 2 - £100/m 2 Annual saving £380 Annual CO 2 saving 2 tonnes Date
Energy in Your Home Wall Insulation Cavity Wall Insulation Installed cost £415 Annual saving £145 Payback Period 3 years Annual CO 2 saving 600kg Date
Energy in Your Home Double Glazing Sash Window Double Glazing Installed cost £8,000? Annual saving £135 Payback Period 59 years Annual CO 2 saving 720kg Date
Energy in Your Home Secondary Glazing Secondary Glazing DIY Installed cost £2,000 Annual saving £50 Payback Period 40 years Annual CO 2 saving 140kg Date
Energy in Your Home Renewable Energy • Solar Thermal – provides hot water • Solar PV – provides electricity • Wind turbine – provides electricity • Biomass – provides heating • Heat Pumps – provides heating Date
“Retrofit & Replicate” - exemplar terraced house refurbishment Date
Case study • Government had am 80% reduction CO 2 , based on a ‘whole house’ approach • Energy breakdown for dwellings − 61% space heating − 23% hot water − 13% lighting and appliances − 3% cooking • The priorities are: − to minimise heat losses from the building fabric; − to install an easily replicable, efficient form of space and water heating; − to reduce the energy requirements for lighting; − to utilise the most appropriate renewable forms of micro-generation Date
The Proposals Date
Insulation • Kingspan Kooltherm phenolic foam lining boards • Web Dynamics TLX Gold breathable multifoil – world’s first application • Kingspan Thermapitch polyurethane • U value = 0.15 W/m²K walls • U value = 0.10 W/m²K roof Date
Windows and Doors • Nordan NTech Passive windows – triple-glazed, – frame insulated • U value = 0.7 W/m²K ! Date
MV Heat Recovery Vaillant recoVAIR 275 • 85% efficient heat recovery Date
Lighting • 100% LED fittings • GreenLED 3.7w ‘Antares’ GU10 • 180W for whole house • 50,000 hrs lifespan = 20 years before replacement Date
Solar Thermal Collectors Dual east/west-facing panels giving combined area of 3.68m 2 • Controls intelligently favour the better performing panel • Generates 1240 kWh heat per year, around 70% of annual need • Heat stored in 250 litre Range twin coil thermal store, located directly beneath panels • Backed up by conventional condensing gas boiler Date
Solar Photovoltaics • 8 x 170w polycrystalline panels (10m 2 ) located on extension flat roof • Supplied and installed by Solar Technologies under British Gas framework with 50% grant funding anticipated from LCBP • Tilted due south at 5 deg pitch, generating 1088 kWh/yr (618 kgCO 2 /yr offset) • Low profile installation to remove impact on neighbours and planning considerations • 1no. inverter located in meter cupboard, cable penetrates roof via local upstand • Installed cost to client - £4460 (with grant) = £446/m 2 or £3280/kWp Date
Achieving the Target Date
Achieving the Target Fabric insulation - £8900 or £4.38/kgCO 2 /yr saved Triple-glazed windows/doors - £9640 or £21.34/kgCO 2 /yr saved Condensing boiler/central heating - £5000 or £3.16/kgCO 2 /yr saved MVHR/airtight measures /testing - £3200 or £2.83/kgCO 2 /yr saved Solar collectors and storage - £5300 or £7.49/kgCO 2 /yr saved Replacement LED Lighting - £2505 or £8.32/kgCO 2 /yr saved Photovoltaics - £4950 (with 50% LCBP grant) or £9.39/kgCO 2 /yr saved Total - £39,495 or £6.10/kgCO 2 /yr saved Average tenant fuel bill reduced by over £600/yr Date
The completed project Date
The completed project Date
The completed project Date
The completed project Date
The completed project Date
The completed project Date
Recommend
More recommend
