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Results from REAP BedZED scenarios 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 H o u s i n g Tr a n s p o r t F o o d C o n s u me r I t e ms P r i va t e S e r vi c e s P u bl i c Se r vi c e s C a p i t a l I n ve s t me n t Baseline BedZED average BedZED Keen BedZED Case Study Architect: Bill Dunster Architects, initiated by BioRegional and developed by Peabody Date: 1999-2002 Location: Hackbridge, south London size: 3.5 acres Cost: € 17 million: construction costs (€ 14 million); taxes (€ 2,5 million); planning and audit costs (€ 0,5 million); Construction cost of the 82 residential unit (€ 8 million) Design Concept: create a “net zero fossil energy development” 50% reduction in fossil fuel consumption Materials sources within 35 miles of site. Reduce fuel cost of residents Lower energy running bill Combining live/work assist startup business Improved site ecological value Building cost 30% higher than expected Apartments 20% higher than market value Economy: Social: Public transportation Live/work combined Private open space in each home Improve air quality Community internet Closer relationship between neighbors Environmental: Energy: -100% renewable energy -Passive solar heating in winter -Solar panels -Charging station for electrical cars -Wind powered ventilation systems -Zero fossil fuel -Heating system problems/defects Water: -Rainwater storage tank underground -Rainwater used for flushing toilet and irrigating gardens -Conservation strategies (spray taps/ showers, dual/low flush toilets) -On-site ecological water treatment Waste: -Recycling facilities -Each home includes under-sink bin divided into 4 sections -Urban tree waste bio-fuelled CHP Construction: -Recycled timbers -Reused structural steels -Materials sourced locally -Timber used in preference to steel/ aluminum -Houses face south for solar gain -Roof gardens on top of workspaces Transportation: -Footpaths and cycle routes encourage walking and biking -Electric/hybrid cars have priority -Supermarket internet home delivery -Public transportation -No one owns a electric vehicle eric tsang arc401L pablo la roche Sources: www.bioregional.com hp://sustainablecies.dk hp://www.arup.com BedZED 2007 4 BedZED 2007 if CHP in operation 5 UK Average (based on dwellings built in 2002) Heating & hot water kWh /m²/yr 48.0 48.0 231.8 CO 2 /m²/yr 9.3 1.2 45 Electrical load kWh /m²/yr 34.4 34.4 45.5 CO 2 /m²/yr 10.6 -8.9 18.4 Total energy use kWh/ m²/yr 82.4 82.4 275.3 CO 2 / m²/yr 19.9 -7.7 63.3 Total water consumption summary BedZED 2003 litres/ person/ day BedZED 2007 litres/ person/ day Local average for metered properties litres/ person/ day 91 87 143 Travel to work Car 17% Bus 7% Train 54% Bike 11% Foot 11% Motorbike 0% 2007 Waste audits Questionnaire Waste stream Kg/ household/ week Kg/ person/ week % composition (weight) % composition (volume) % households using the bin mix dry (cans/ fabric / plastic/ card/ paper) 2.4 1.2 30% 90% green glass 1.0 0.7 12% 80% brown glass 0.2 0.1 2% 72% clear glass 0.4 0.2 5% 82% white paper 0.0 0.0 0% 45% Total recycling 4.0 2.2 50% 37% 90% Compost 0.6 0.3 10% 7% 31% Landfill 3.5 2.0 40% 56% 94% Total 8.1 4.5 100% 100% n/a Neighbours known by name at BedZED Less than 4 16% 4-9 22% 10+ 62% Average 20 Range 0-150 BedZED ecological and carbon footprint scenarios (REAP) Item ‘Sutton average’ ‘BedZED average’ ’ ‘ ‘BedZED keen’ Average data from the REAP software Data acquired through the 2007 monitoring period BedZED average data modified to assume a resident making a significant effort to reduce impact. Also modified to represent the energy supply as originally intended. Energy and home Electricity 3.9kWh pp per day Other fuel 18.2 kWh per day Electricity: 3.4 kWh pp per day 20% electricity from PV Heat and hot water: 5.2 kWh pp per day Energy demand classed as zero due to planned renewables meeting all capacity. Personal travel in private car 5,282 km/year 2,015 km/year 0 km/year Also 0 km/year by taxi Private vehicle ownership 1.6 cars per household 0.6 cars per household 0 cars per household Train 897 km/year 4992 km/year 4992 km/year Bus 465 km/year 676 km/year 676 km/year Air travel 3,245 km/year 10,063 km/year 0 km/year Consumable items Includes clothing, furniture, tools, appliances, personal care etc. 100% of UK typical consumption. Reflects ‘ typical western style’ consumption patterns. 100% of UK typical consumption. Replacing clothes and other items when they are worn out and need replacing as well as occasional other purchases. 41% of UK typical consumption Replacing clothes and other items when they are worn out and need replacing. - tobacco and jewellery to zero - audio-visual equipment reduced by 75% - clothing, furniture, textiles & personal care reduced by 50% - household appliances, tools, utensils, maintenance, and recreational items reduced by 20% Diet Typical diet from REAP 25% of veg, fruit, meat and diary are organic Healthy vegetarian diet, further reduction calculated in line with SEI food report. Food waste 0% reduction compared to average UK consumption. 20% reduction in fruit and veg compared to average UK consumption 30% reduction compared to average UK consumption. Private services Includes hospitals, clinics, postal services, water supply, education, catering etc. 100% of UK typical use Water services Sutton average 171 litres per day 100% of UK typical use. Water services reduced to 87 litres per day 100% of UK typical use apart from specified categories: - Water services reduced to 65 litres per day - Mobile phone bills & eating out reduced by 50% - Private medical treatment reduced to zero Government and capital investment 100% of UK typical 100% of UK typical 100% of UK typical Carbon footprint 11.2 9.9 6 0 2000 4000 6000 8000 Timber framed windows PVC-u framed windows Aluminium framed windows Ecopoints Waste Disposal Water Extraction Minerals Extraction Fossil Fuel Depletion Pollution to Water: Eutrophication Pollution to Water: Ecotoxicity Pollution to Water: Human Toxicity Pollution to Air: Photochemical Ozone Creation Potential Human Toxicity to Air Ozone Depletion Acid Deposition Climate Change 0 400 800 1200 Reclaimed Steel New Steel Ecopoints 0 200 400 Recycled Glass Sand Average Sand Ecopoints RAINWATER COLLECTION FOUL WATER TREATMENT SPETIC TANK RAINWATER STORAGE HOT WATER BIO-FUEL CHP ELECTRICITY PV TO CHARGE ELECTRIC CARS WIND DRIVEN VENTILATION WITH HEAT RECOVERY SOLAR PANELS Floor area Energy Metered Total 50m 2 consumption bills bill KWh/year £/year £/year Space Hot Space Hot heating water heating water UK average 7,000 5,139 £114.80 £84.28 £199.08 New build 2,950 3,900 £ 48.38 £63.96 £112.34 (predicted) ZED standard (monitored) 810 2,190 £20.25 £54.75 £75.00 ZED standard bill saving compared with: UK average £124.08 New build £ 37.34 Clapham Wimbledon Kensington Holborn Mitcham Hampstead Beddington Victoria Victoria London Bridge London Bridge BED ZED
