The companies that actually own and run gasification & energy-from-waste technology.

Most “waste-to-energy” lists blur two different industries: the grate incinerators that burn municipal waste for steam, and the gasifiers that convert waste into syngas, hydrogen and fuel. This desk reviews the second — the companies that own, operate and license gasification and energy-from-waste technology — and ranks them on evidence an engineer or a bank can check: operating plants, technology ownership, feed flexibility and commercial result.

§ The field, in one page

Eleven companies own and operate commercial gasification technology today. The ten that cleared the bar are ranked — and the field around them is littered with well-funded names that didn’t survive first commercial scale. The full comparison lives on its own page:

The ranking — ten companies, scored on their operating record

MHI, Hitachi Zosen, Nippon Steel, Klean and six more — where each lands, and the evidence behind it.

See the ranking

Where are the big “waste-to-energy” names? Veolia, Suez, Covanta/Reworld, China Everbright and Keppel Seghers are predominantly mass-burn incinerators, not gasifiers, so they sit outside this ranking. Andritz and Valmet gasify biomass, not municipal waste — a different feed, graded on its own terms rather than against a municipal stream.

The graveyard — why “operating” matters

Gasification’s commercial history is littered with engines that stalled at first scale. Six matter for anyone doing diligence:

Enerkem — raised hundreds of millions across two decades — a $50M U.S. Department of Energy grant plus successive rounds from Waste Management, Valero and other strategic investors — then retired its flagship plant at roughly 1.5% of nameplate and entered insolvency protection in 2025.
EQTEC — AIM-listed, but flagged material going-concern doubt in 2025; in early 2026 it pivoted the company toward mining assets, leaving its gasification technology’s future ownership unresolved.
Fulcrum BioEnergy — built a gasification plant to turn municipal waste into jet fuel with backing from BP, United and Cathay Pacific; produced a brief run of synthetic crude in 2022, shut the plant in May 2024, and filed Chapter 11 that September with a ~$0.4 billion net deficit, its assets sold at auction.
Red Rock Biofuels — woody-biomass gasification to Fischer-Tropsch jet fuel; Southwest Airlines and FedEx had already signed offtakes, but the Oregon plant was never commissioned, defaulted on ~$355 million and went into foreclosure.
Velocys — the Fischer-Tropsch “waste-to-jet” developer backed by British Airways and, once, Shell; after 15 years and tens of millions in grants, none of its projects reached commercial production before it entered administration in 2023.
Alter NRG — its plasma gasifier never ran at scale: Air Products abandoned the two Teesside plants in 2016 and wrote down ~$0.9–1.0 billion; the technology was later sold into a Chinese group.

The lesson: a technology that works in a pilot does not always survive its first commercial scale-up. That is exactly why this ranking weights operating reference plants above announced ones — and why the companies that cleared that bar sit in the top tier.

§ What separates the top tier

The companies above the line share three things a deck can’t fake: operating reference plants (not renderings), owned technology (not re-badged third-party kilns), and feed flexibility — the ability to take the variable, contaminated waste an industrial operator actually produces, not a clean sorted stream. The leader on that last point is rarely the company with the most press.

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