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This page introduces the calculation method of the Ecoscore, and its evolution introduced across versions.
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This first version of the ecoscore defines thresholds for the three metrics. Additional thresholds are defined for Action steps, which can be longer than Loading steps.
The thresholds for the Energy metric quantifies the increase in power usage compared to the idle power usage. For example, the grade 2 is obtained with a power usage under three time the idle power usage, but higher than two times the idle power usage.
5 | 4 | 3 | 2 | 1 | |
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Energy (mAh/s) | < x1.05 | < x1.5 | < x2 | < x3 | >= x3 |
Time (s) | < 1 | < 3 | < 5 | < 10 | >= 10 |
Time (action) (s) | < 5 | < 10 | < 15 | < 20 | >= 20 |
Network Data (ko) | < 10 | < 30 | < 50 | < 100 | >= 100 |
Ecoscore V2
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Specific thresholds are introduces for Pause steps in “Energy” and “Network data”. Such thresholds are structs as Pause steps are not supposed to sollicitate the hardware.
Energy steps (outside of Pause steps) are made more permissive
Highest Duration thresholds are made more strict
The distribution of Network Data is made exponential, with stricter thresholds for best grades and more permissive thresholds for low grades.
Specific thresholds are introduces for Network Data on thin clients (web), higher than on rich client (applications).
5 | 4 | 3 | 2 | 1 | |
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Energy (mAh/s) | < x2 | < x3 | < x4 | < x5 | >= x5 |
Energy (Pause) (mAh/s) | < x1.05 | < x1.5 | < x2 | < x3 | >= x3 |
Time (s) | < 1 | < 2 | < 5 | < 10 | >= 10 |
Time (Action) (s) | < 2 | < 4 | < 10 | < 20 | >= 20 |
Network data | < 5 | < 25 | < 50 | < 300 | >= 300 |
Network data (Web) (ko) | < 50 | < 250 | < 500 | < 1000 | >= 1000 |
Network data (Pause) (ko) | 0 | < 5 | < 10 | < 25 | >= 25 |
Ecoscore V2.1
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Energy thresholds, made more permissive in V2, turned out to be too permissive, making high ecoscores too reachable.
5 | 4 | 3 | 2 | 1 | |
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Energy (mAh/s) | < x1.25 | < x1.75 | < x2.5 | < x3 | >= x3 |
Energy (Pause) (mAh/s) | < x1.05 | < x1.5 | < x2 | < x3 | >= x3 |
Time (s) | < 1 | < 2 | < 5 | < 10 | >= 10 |
Time (Action) (s) | < 2 | < 4 | < 10 | < 20 | >= 20 |
Network data (ko) | < 5 | < 25 | < 50 | < 300 | >= 300 |
Network data (Web) (ko) | < 50 | < 250 | < 500 | < 1000 | >= 1000 |
Network data (Pause) (ko) | 0 | < 5 | < 10 | < 25 | >= 25 |