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Conferencing Calculator
This tool calculates the following savings when using data/video conferencing versus travel:
  • Productivity Gains
  • Travel Savings
  • Greenhouse Emissions Savings

References
Calculations are based on the following data:
  1. Aircrafts (short-haul distances under 452Km, 100% full, 35 passengers) use 150 to 180 grams (165 average) of carbon dioxide per passenger kilometer.i, ii
  2. Aircrafts (medium-haul distances between 452Km and 1600Km, 100% full, 200 passengers) use 150 grams of carbon dioxide per passenger kilometer.ii
  3. Aircrafts (long-haul distances over 1600Km, 100% full, 500 passengers) use 110 grams of carbon dioxide per passenger kilometer.i, ii
  4. Total warming effect of all emissions (CO2, H2O and NOx) from aircrafts is roughly 3 times greater than that of CO2 alone.i, iii
  5. Trains use 17.4 grams of carbon dioxide per passenger kilometer (70% full, 400 passengers).i
  6. Buses use 14.4 grams of carbon dioxide per passenger kilometer (40 passengers on board).i
  7. Cars with fuel economy in the range of 1-5 liters per 100 kilometer emit on average 120 grams of CO2/kilometeriv
  8. Cars with fuel economy in the range of 6-10 liters per 100 kilometer emit on average 155 grams of CO2/kilometeriv
  9. Cars with fuel economy in the range of 16-20 liters per 100 kilometer emit on average 410 grams of CO2/kilometeriv
  10. Cars have a maximum of 4 passengers.
  11. CO2 emissions per country per capita (2004) provided by the EIA
  12. Default average connection costs of video and data conferencing (including Microsoft Live and WebEX) were taken in February 2007. Conferencing costs do not include equipment or subscription fees.
  13. All results are rounded to the nearest integer.

i George Monbiot, Heat, pp 170-188
ii Clean Air Conservancy
iii Intergovernmental Panel on Climate Change, Aviation and the Global Atmosphere, 1999
iv www.vcacarfueldata.org.uk


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