What is Renewable Natural Gas?

Renewable Natural Gas (RNG) is a fully compatible, drop‑in replacement for fossil natural gas.

Cetna’s process produces RNG using sustainably sourced wood residues and wood wastes generated from regional manufacturing operations. These biomass materials undergo steam reforming, where they are thermochemically converted into a clean intermediate feed gas. The resulting feed gas is then routed through a methanation reactor, which catalytically upgrades the gas into high‑purity renewable natural gas suitable for injection into existing natural‑gas infrastructure.

How is RNG used?

• Injected into natural gas pipelines

• Used for thermal energy (industrial heat, boilers)

• Used to generate electricity

• Used as vehicle fuel (notably in heavy‑duty fleets)

• Used as a feedstock for chemicals and fuels (e.g., methanol)

Why RNG matters?

RNG is one of the few drop‑in, infrastructure‑compatible low‑carbon fuels available today. It supports decarbonization in sectors that are hard to electrify—heavy industry, long‑haul transport, and chemical production—while also reducing methane emissions from waste systems.