Carbon footprint is the total set of greenhouse gas (GHG) emissions caused directly and indirectly by an individual, organization, event or product” UK Carbon Trust, 2008 Lund University / LTH / Energy Sciences
• To compare various carbon calculators available on the Internet • Seven carbon calculators are described and evaluated 5 Swedish and 2 foreign • A special marking scale is suggested • The results are expected to serve as a guide when choosing a carbon calculator on the Web Lund University / LTH / Energy Sciences
• Housing 15-25 % – House type , family size, electricity/energy consumption… – Fuel mix in specific country is crucial • Transportation 25-30 % – car and flight habits; sometimes more details about all vehicles: motorcycles, boats, trams… • Lifestyle ~ 50 % – indoor temperature, food habits, recycling… Lund University / LTH / Energy Sciences
• Two adults and two • Car: an old Volvo 20.000 km teenagers per year (10 litre/100 km) • Medium-size (115 m 2 ) • The teenagers mostly travel detached house in by bus 20 km/day/person Stockholm • Train: 500 km/ person/year. • Electric resistance heating • Airplane: the whole family 20 MWh/a (22 degrees goes to Thailand once a indoor) year • Domestic electricity 5 • Teenagers are vegetarians, MWh/a parents eat meat (half of the • Recycle the waste and meals) garbage Lund University / LTH / Energy Sciences
• E.On Sweden - The Climate School • Environmental Protection Agency (EPA) • Swedish Environmental Institute (IVL) • World Resources Institute: Safe Climate • Swedish Society for Nature Conservation (SNF) • Stockholm City: Greenhouse profile 1 and GH profile 2 • World Wide Fund (WWF) Lund University / LTH / Energy Sciences
Lund University / LTH / Energy Sciences
Lund University / LTH / Energy Sciences
Lund University / LTH / Energy Sciences
Lund University / LTH / Energy Sciences
Lund University / LTH / Energy Sciences
Six properties most important to assess • User-friendliness 1 or 2 points • Scope 1, 2 or 3 pts weighted with 2.0 • Calculation method 0, 1 or 2 pts weighted with 1.5 • Input data 1, 2 or 3 pts • Advices and guidance 1, 2 or 3 pts • Layout and presentation 1, 2 or 3 pts Max. 20 points Lund University / LTH / Energy Sciences
Lund University / LTH / Energy Sciences
Lund University / LTH / Energy Sciences
Emissions caused by the Albert’s family vs total marks for every carbon calculator Lund University / LTH / Energy Sciences
• Carbon calculators differ a lot in their results • Useful as a tools for the comparison of CO 2 emissions • Useful as a way to learn about our environmental impact • Still impossible to conduct an accurate marking and ranking • Rating criteria are subjective: other conditions and assumptions would lead to another results • “Carbon footprints” on the computer screen are not an absolute truth but can be used as a tool for ones own comparison, judgement and behavioural change Lund University / LTH / Energy Sciences
Lund University / LTH / Energy Sciences
Jurek.Pyrko@energy.lth.se Lund University / LTH / Energy Sciences
Recommend
More recommend