is the total set of greenhouse gas (GHG) emissions caused directly - PowerPoint PPT Presentation

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