The climate crisis and what to do about it
False and dubious solutions
Reasons for optimism
Tecnicalities by sector
Standards of administration in a democracy
Best practice examples
Version 4The current version of the calculator (Version 4) dates from January 2019 with changes to incorporate the latest emission factors and other information.
The main changes from Version 3 to Version 4 are:
1. Electricity:The CO2 emission factor was changed to 0.309 kge / kWh from 0.527 kg / kWh.
CO2 emissions have fallen because of the switch from coal to gas in UK electricity generation. (Jan 2019)
An option for accommodation in a student hall of residence was added, with a value of 2000kWh electricity use per person per year (Feb 2020).
2. Gas:An option for accommodation in a student hall of residence was added, with a value of 5000kWh gas use per person per year (Feb 2020).
3. Typical car fuel use figuresFigures were updated from the DEFRA car emissions factors used in Version 3:
measured values taken from the Which magazine:
Version 3The previous version of the calculator was Version 3, published in March 2008. It is still available at https://www.carbonindependent.org/index_v3.html to enable a like-for-like comparison with previous carbon footprint estimates made using version 3.
The main changes in version 3 from version 2 were:
The factors unchanged were:
Updates were made in December 2013 to include coal, wood, bottled gas, and newer "green" electricity tariffs.
Cosmetic changes were made in February 2015, together with a change from .htm to .html filetype, but there were no changes to the underlying calculations.
Version 2This was first published in August 2007 - and was superseded in March 2008.
Version 1This was first published in February 2007 - and was superseded in August 2007.
First published: 2008
Last updated: 27 Feb 2020