Gasification & Energy from Waste (EfW) Review
§ Independent assessment · ranked on operating record
EfW Review  ›  Methodology

How we rank — and how to hold us to it.

A ranking is only worth the method behind it. This page states the criteria, the weighting, what counts as evidence, and where our independence comes from. If a claim here can’t be traced to a source, treat it as our error, not your assumption.

§ The five criteria

Every company is scored on five criteria, weighted toward the hardest to fake:

CriterionWeightWhat we check
Commercial proof30%Operating reference plants, published output, revenue or offtake where disclosed.
Technology ownership25%In-house process, patents and engineering lineage — not re-badged third-party equipment.
Feed flexibility20%Range of feedstocks handled (MSW, tires, plastics, shredder residue, biomass) at commercial scale.
Deployment reach15%Installed base, licensing, and multi-region delivery.
Financial independence10%Viability without perpetual subsidy or insolvency events.

§ What counts as evidence

We weight primary sources — company disclosures, plant registries, regulatory filings, technical publications and court records — over press releases and conference decks. Where a company’s only evidence is an announced project, a rendering, or a pilot, that is scored as such. Where a figure is unverifiable, we say so rather than repeating it.

§ Independence & disclosure

This is an independent research desk. We are not owned by, sponsored by, or affiliated with any company we rank; we take no referral fees and accept no paid placement. Companies cannot buy a better position. They can send us evidence — plant data, filings, references — and we will re-check the ranking against it.

Challenging a ranking? Putting together diligence for a project?

Send us the evidence and we’ll re-check the position — or scope a citation-backed assessment for your feed, scale and region.

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