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  Spend a day without any machines
Added by Monica Srivastava, last edited by Monica Srivastava on Jul 03, 2008  (view change)
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Carbon saved by turning off all your machines for a day

Machines have spread into every area of our life; we've become reliant on them for work, entertainment, cooking, cleaning, gardening and so on. The average household today has around 47 different gadgets, devices and appliances; in the 1970s this number was around 17. All of these different machines use lots of energy, and subsequently produce copious amounts of carbon. In the last 30 years, electricity consumption used just to power our machines has doubled to 89TWh, which is the same as having 44.5 billion kettles boiling away for an hour.

Spending a day away from our machines helps us to reduce our energy consumption, our energy bills, as well as our over-reliance on them. And an additional valuable side-effect is that we can spend the time getting back in touch with ourselves, rediscovering things we enjoy doing, and reconnecting more fully with others, as well as engaging less well used parts of our brain (e.g skills developed through playing a sport for real rather than its digital equivalent).

Carbon saved by turning off machines for the day:

According to the Environmental Change Institute, average energy consumption in the UK is: 1
 
Per household
Gas use - 20,582 kWh/year, 3,930 kg CO2
Electricity use - 4640 kWh/year, 2,300 kg CO2
 
which equates to 2
Per person
Gas use - 8,575 kWh/year, 1,638 kg CO2
Electricity use - 1,933 kWh/year, 958 kg CO2

Total emissions per person = 2596 kg CO2 

Exclusions

Cooking: emissions due to cooking will not be included within this calculation. According to Defra, cooking makes up around 5% of a household's footprint,
resulting in emissions of: 0.05 x 2596 = 129.8 kg CO2 per year per person.

Cold appliances: All machines can be physically turned off within the home except for cold appliances (i.e. fridges and freezers), which on average use around 500 kWh per year per household. 3 Using our grid electricity conversion factor of 0.527 kg CO2 per kWh 4 , this translates to CO2 emissions of:

500 x 0.527 = 263.5 kg CO2 per year per household or 263.5/2.4 = 109.79 kg CO2 per person.

Calculating CO2 saved per person by switching off all machines in a day (except cooking and cold appliances): 

2596 kg - 129.8 - 109.79 = 2356.41 kg per person per year

Therefore carbon saved by turning everything off that you can for the day: 

2356.41 kg / 365 = 6.5 kg per day.

Footnotes

Footnotes
Reference Notes
1 As noted http://www.imeasure.org.uk/results.php?demo
2 Using an average figure of 2.4 persons per household
3 Using data from 'How to live a low-carbon life' by Chris Goodall (2007), page 149, Earthscan
4 According to AMEE The World's Energy Meter http://wiki.co2.dgen.net/index.php/ActOnCO2_Methodology#Grid_Electricity

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