Reliability

Where calculation reliability stands

VoLCA is compared with results published by database producers, using the same source data and their impact factors.

Every impact category a publisher's table holds for the method families measured here is shown, the ones that disagree included, each with the verdict a release is held to. What does not agree is on this page for the same reason as what does: so that anyone can see where the engine stands.

Compare engine history · Time and memory measurements

Engine version
volca 0.13.0 (8c0396c, v0.13.0, linux)
Measured on

377 drawn comparisons, 184 of which miss the agreement a release is held to. Every category a publisher's table holds is drawn, whether it agrees or not, and says which. Cells cover categories recorded across measured engines, within each database and collection. Gray cells distinguish recorded refusals from measurements not recorded. Colors identify databases only.

ecoinvent

3.8 cut-off

IPCC 2013

ecoinvent 3.8 cut-off · ipcc-2013

climate change / GTP 100a

Recorded refusal

Read refusal reason

the database is blocked by volca#311

climate change / GWP 100a

Recorded refusal

Read refusal reason

the database is blocked by volca#311

climate change / GTP 20a

Recorded refusal

Read refusal reason

the database is blocked by volca#311

climate change / GWP 20a

Recorded refusal

Read refusal reason

the database is blocked by volca#311

ecological scarcity 2013

ecoinvent 3.8 cut-off · ecological-scarcity-2013

carcinogenic substances into air

Recorded refusal

Read refusal reason

the database is blocked by volca#311

energy resources

Recorded refusal

Read refusal reason

the database is blocked by volca#311

global warming

Recorded refusal

Read refusal reason

the database is blocked by volca#311

heavy metals into air

Recorded refusal

Read refusal reason

the database is blocked by volca#311

heavy metals into soil

Recorded refusal

Read refusal reason

the database is blocked by volca#311

heavy metals into water

Recorded refusal

Read refusal reason

the database is blocked by volca#311

land use

Recorded refusal

Read refusal reason

the database is blocked by volca#311

main air pollutants and PM

Recorded refusal

Read refusal reason

the database is blocked by volca#311

mineral resources

Recorded refusal

Read refusal reason

the database is blocked by volca#311

non radioactive waste to deposit

Recorded refusal

Read refusal reason

the database is blocked by volca#311

ozone layer depletion

Recorded refusal

Read refusal reason

the database is blocked by volca#311

pesticides into soil

Recorded refusal

Read refusal reason

the database is blocked by volca#311

POP into water

Recorded refusal

Read refusal reason

the database is blocked by volca#311

radioactive substances into air

Recorded refusal

Read refusal reason

the database is blocked by volca#311

radioactive substances into water

Recorded refusal

Read refusal reason

the database is blocked by volca#311

radioactive waste to deposit

Recorded refusal

Read refusal reason

the database is blocked by volca#311

total

Recorded refusal

Read refusal reason

the database is blocked by volca#311

water pollutants

Recorded refusal

Read refusal reason

the database is blocked by volca#311

water resources

Recorded refusal

Read refusal reason

the database is blocked by volca#311

ecoinvent

3.9.1 cut-off

EF v3.1

ecoinvent 3.9.1 cut-off · ef-v3.1

IPCC 2021

ecoinvent 3.9.1 cut-off · ipcc-2021

ecoinvent

3.10 cut-off

EF v3.1

ecoinvent 3.10 cut-off · ef-v3.1

IPCC 2021

ecoinvent 3.10 cut-off · ipcc-2021

ecoinvent

3.10.1 cut-off

EF v3.1

ecoinvent 3.10.1 cut-off · ef-v3.1

IPCC 2021

ecoinvent 3.10.1 cut-off · ipcc-2021

ecoinvent

3.11 cut-off

EF v3.1

ecoinvent 3.11 cut-off · ef-v3.1

IPCC 2021

ecoinvent 3.11 cut-off · ipcc-2021

climate change: removals from direct land use change

Recorded refusal

Read refusal reason

IPCC 2021 (ecoinvent-lcia-3.11): nothing comparable: 25412 points at or below zero on one side

ecoinvent

3.12 cut-off

EF v3.1

ecoinvent 3.12 cut-off · ef-v3.1

IPCC 2021

ecoinvent 3.12 cut-off · ipcc-2021

climate change: removals from direct land use change

Recorded refusal

Read refusal reason

IPCC 2021 (ecoinvent-lcia-3.12): nothing comparable: 26533 points at or below zero on one side

Agribalyse

3.1.1

EF 3.1 adapted 1.0

Agribalyse 3.1.1 · ef31-adapted-1.0

PEF

Recorded refusal

Read refusal reason

ef31-adapted-1.0: no category of the method answers to this name

Ecotoxicity, freshwater

Recorded refusal

Read refusal reason

ef31-adapted-1.0: no category of the method answers to this name

Agribalyse

3.2

EF 3.1 adapted 1.0

Agribalyse 3.2 · ef31-adapted-1.0

PEF

Recorded refusal

Read refusal reason

ef31-adapted-1.0: no category of the method answers to this name

Ecotoxicity, freshwater

Recorded refusal

Read refusal reason

ef31-adapted-1.0: no category of the method answers to this name

BAFU

2025 v1

IPCC 2021

BAFU 2025 v1 · ipcc-2021

Ecological Scarcity 2021

BAFU 2025 v1 · ecological-scarcity-2021

Noise

Recorded refusal

Read refusal reason

Ecological Scarcity 2021 (ecoinvent-lcia-3.12): no category of the method answers to this name

Biotic Resources

Recorded refusal

Read refusal reason

Ecological Scarcity 2021 (ecoinvent-lcia-3.12): no category of the method answers to this name

BAFU

2025 v2

IPCC 2021

BAFU 2025 v2 · ipcc-2021

Ecological Scarcity 2021

BAFU 2025 v2 · ecological-scarcity-2021

Noise

Recorded refusal

Read refusal reason

Ecological Scarcity 2021 (ecoinvent-lcia-3.12): no category of the method answers to this name

Biotic Resources

Recorded refusal

Read refusal reason

Ecological Scarcity 2021 (ecoinvent-lcia-3.12): no category of the method answers to this name

EF 3.1 adapted 1.05

BAFU 2025 v2 · ef31-1.05

Ecotoxicity freshwater

BAFU 2025 v2, Ecotoxicity freshwater

Disagrees, for a known reason

11,542 outside the 1% band / 11,542 compared

Read the known reason

The method file's undivided category lists only 1109 substances, each named with a leading digit or punctuation mark and none of them a metal or a pesticide, while the published column is the whole indicator.

Largest relative deviation: -100%

Ionising radiation (human health)

Recorded refusal

Read refusal reason

ef31-1.05: no category of the method answers to this name

Photochemical ozone formation (human health)

Recorded refusal

Read refusal reason

ef31-1.05: no category of the method answers to this name

BAFU

2026 v1

IPCC 2021

BAFU 2026 v1 · ipcc-2021

Ecological Scarcity 2021

BAFU 2026 v1 · ecological-scarcity-2021

Biotic Resources

Recorded refusal

Read refusal reason

Ecological Scarcity 2021 (ecoinvent-lcia-3.12): no category of the method answers to this name

Noise

Recorded refusal

Read refusal reason

Ecological Scarcity 2021 (ecoinvent-lcia-3.12): no category of the method answers to this name

EF 3.1 adapted 1.05

BAFU 2026 v1 · ef31-1.05

Ecotoxicity freshwater

BAFU 2026 v1, Ecotoxicity freshwater

Disagrees, for a known reason

11,641 outside the 1% band / 11,641 compared

Read the known reason

The method file's undivided category lists only 1109 substances, each named with a leading digit or punctuation mark and none of them a metal or a pesticide, while the published column is the whole indicator.

Largest relative deviation: -100%

Ecotoxicity freshwater (inorganics)

BAFU 2026 v1, Ecotoxicity freshwater (inorganics)

Disagrees, for a known reason

11,651 outside the 1% band / 11,656 compared

Read the known reason

The two published columns carry each other's labels: the method file files copper compounds under inorganics and glyphosate under organics, and held against the organics column the median ratio is 0.9246 instead of 36.5. The 7 percent that remain say the split itself differs, which no matching of names would recover.

Largest relative deviation: +177,088,241,829,711.35%

Climate change (land use)

Recorded refusal

Read refusal reason

ef31-1.05: no category of the method answers to this name

Ionising radiation (human health)

Recorded refusal

Read refusal reason

ef31-1.05: no category of the method answers to this name

Photochemical ozone formation (human health)

Recorded refusal

Read refusal reason

ef31-1.05: no category of the method answers to this name