Assessment object
Company and environmental performance
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Company rating method
GreenStars shows a company's level of environmental responsibility from open evidence. It turns seven metrics into one score, publishes the weights, and leaves a clear audit trail.
Assessment object
Company and environmental performance
Scale
0-20 points and five GreenStars tiers
Verification
Public sources and reproducible scoring
01
Companies disclose data across different reports and standards. GreenStars puts this evidence on one scale so registry participants are compared by measurable outcomes, not by report volume.
02
The base oil and gas version uses seven indicators that are most closely tied to environmental and operating impact.
03
Each indicator receives a 0-20 score. The score is multiplied by a public weight, then checked against safeguards that prevent one strong narrative from hiding a weak area.
04
The final score maps to five tiers: Initial, Emerging, Competent, Dignified, and Exemplary. Thresholds are fixed and are not curved to match market averages.
05
GreenStars relies on public reports, sector disclosures, and checkable sources. If a metric cannot be confirmed by at least two sources, it should not lift the score.
Other methods
Voluntary product and service certification
GreenList Product reviews a product, work, or service separately from the company rating. It looks at product properties and the full path from idea and materials to use and end of life.
OpenESG and innovation adoption assessment
ESG+ extends classic ESG assessment. Beyond risk, governance, and disclosure, it checks whether a company changes production through innovation and whether that change has measurable environmental effect.
Open