Responsible sourcing:
Views from Mars and the chalk face.
Mike Berners-Lee
An Associate Company of Lancaster University
Responsible sourcing: Views from Mars and the chalk face. Mike - - PowerPoint PPT Presentation
Responsible sourcing: Views from Mars and the chalk face. Mike Berners-Lee An Associate Company of Lancaster University Very quick background Books A sustainability consultancy largely focussed largely on supply chains BT, Booths, Taylor
An Associate Company of Lancaster University
A sustainability consultancy largely focussed largely on supply chains BT, Booths, Taylor Wimpey, lots of SMEs in many industries, public sector, Lancaster University, Eden Project, Science Museum, Guardian, community projects ... Books Research
Direct Indirect
We’ve got a history We want a long lives We want to be looked after We want to be ‘net good’
We don’t want to be buried alive
We want an after life
Most supply chains are complex and
Our understanding can never be exact but it can be ‘good enough’
Meat sales up 30% during the horsemeat scandal
Mapping the Greenhouse gas impacts
factored into marketing and sourcing decisions
publically available.
universities and think tanks for research.
0.000 0.500 1.000 1.500 2.000 2.500 3.000 3.500 (2) BEER AND CIDER Potatoes Tomatoes Green salads Prepared Veg., fruit & salad Exotic veg and mushrooms Apples & Pears Bananas Citrus and melons Exotic fruit and berries (including soft,… (67) FLORISTRY (84) CABINETS COOKED MEATS Cabinets Milk Ready meals, pizza & pasta Sandwiches (52) BREAD (70) FROZEN FOODS kgCO2e Source ingredients to farm / factory gate Food processing Total consumer packaging footprint Transit packaging Transport Emissions to DC Transport emissions from all DCs to Stores Storage and processing at DC Overhead (exc. refrigeration) Refrigeration
Typical UK Person: 15 tonnes per year
Hong Kong return: 4.6 tonnes
Low 3.4 tonnes High 13.4 tonnes Average 4.6 tonnes Economy First class
Low 0 g 20g typical hand drier Average 10 g Let them drip Paper towels
Laptop: 400Kg embodied
Low ~100Kg High ~1 tonne Average 400 Kg 2010 21.5 inch iMac A simple low cost laptop
Laptop: ~50g / hour operational
12g 150g 63 Kg Old desktop Energy efficient laptop Power hungry iMac or similar
Data Centres
2010: 130 million tonnes CO2e Prediction for 2020: 250 – 340 million tonnes CO2e
Process Based Life Cycle Analysis
0.0% 10.0% 20.0% 30.0% 40.0% 50.0% 60.0% 70.0% 80.0% 90.0% 100.0% Direct Tier 1 Tier 2 Tier 3 Tier 4
Percentage of emissions captured with cumulative tiers of the supply chain.
Agriculture Metal ores extraction Plastic products Non-ferrous metals Motor vehicles Telecommunications
PAS 2050 – Review of methods
“Experts highlighted particularly two weaknesses of PLCA: cost and labour intensity of carrying out a PLCA and the system boundary problem … “system cut-off” is unavoidable in PLCA …The cut-off criteria suggested by ISO can be misleading and do not provide a satisfactory basis for a transparent system boundary selection…. The (resulting) truncation error is potentially very large. …” “…This is further aggravated when restrictions are imposed on the budget as typical in simplified PLCA approaches. Such simplified approaches usually fail to reliably reproduce results from detailed PLCA . However, only simplified PLCAs work under tight budget constraints required for the PAS to be applicable to organisations of all sizes. This seriously limits the usefulness of PLCA for the PAS development.”
Input Output Analysis
Looks at the whole economy divided into industry sectors.
Input Output Analysis
Demand for products stimulates output across the economy….
Input Output Analysis
…. causing both direct and indirect emissions…
Input Output Analysis
…. the ripple effects are endless…
Input Output Analysis
…without systematic underestimation …. the ripple effects are endless… but can be modelled as a complete system…
A hybrid methodology is usually the most practical way to get a reasonable understanding
are addressed – within a finite resource?
Mike Berners-Lee
mike@sw-consulting.co.uk
An Associate Company of Lancaster University