ABCDEFGHIJKLMNO
1
2
Note: this spreadsheet is no longer maintained.
Please visit the updated version here
3
4
Basic methodology
5
6
Carbon emissions prevented is where we are starting. (We have included data for H2O footprint in case found while searching for CO2 data.)
7
8
CO2 emissions prevented by repair (kg) =
9
CO2 emissions prior to usage (kg) x (rate of "displacement" of a new purchase)
10
11
1) We prioritised the "most relevant" device categories, based on frequency of our fixes (2013-4)
12
2) We collaboratively sourced AS MUCH data as possible on CO2 footprint in manufacture for these priority categories
13
3) Each piece of data has a source (link, year) or as a last resort, results from a proxy assumption (indicated)
14
15
After the data scavenger hunt, we rated data based on a data quality matrix: representativeness, age, reliability - see DQI sheet for more
16
17
Assumptions:
18
- consumption of materials during repair insignificant
19
- gains by upgrade to "energy efficient" device insignificant
20
- variations in distribution impacts between Europe and North America insignificant
21
- average rate of displacement
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100