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EcoSpold 1 · Calculation comparison

BAFU 2026 v1, GWP 100

A comparison of published impact results with VoLCA calculations from the same source data and the publisher’s impact factors. Points on the diagonal agree.

Engine version
volca 0.14.0 (bd7e64a, v0.14.0, linux)
Measured on
Comparison measurements and reference
DatabaseBAFU 2026 v1
Source formatEcoSpold 1
Impact method collectionIPCC 2021
Impact categoryGWP 100
Unitkg CO2-eq
Activities compared11,659
Median ratio (VoLCA / published)0.9993
Comparison band1%
Activities outside the band1,271
Share outside the band10.9%
VerdictDisagrees: misses the agreement a release is held to
Points drawn2,110
Largest relative deviation-99.42%
Activity with largest deviationTransport, natural gas, onshore pipeline, long distance
Published referenceBAFU-2026 v1 LCIA Results_corrected.xlsx
BAFU 2026 v1, GWP 100
Each point is one activity: what BAFU 2026 v1 published for GWP 100 (kg CO2-eq), against what VoLCA computes from the same EcoSpold 1 source under the publisher's own IPCC 2021 factors. The black line is equality and the grey band is 1%. 11,659 activities were compared; 1,271 fall outside the band, more than a picture can hold, so 1,944 of the 11,659 are drawn, evenly spaced over the published value whichever side of the band they fall, and the 166 of the 200 farthest from equality that this walk missed are added. Where several fall on one spot, at most three markers are drawn there, since a fourth would not darken it. Median ratio 0.9993, 10.90% outside the band. This misses the agreement a release is held to: at most 5% of activities outside the band and a median ratio inside it.