Rivan’s 1-megawatt green-gas system reaches scale before its air capture does

The story

British climate-technology company Rivan has moved its modular synthetic-methane system from smaller demonstrations to a 1-megawatt deployment and has opened a London production base designed to manufacture up to 50 systems a year. The scale-up is a meaningful test of whether power-to-gas equipment can be built more like a product than a custom industrial project. It also needs a precise label: Rivan’s current full-scale unit uses biogenic carbon dioxide delivered from a nearby anaerobic-digestion plant, while the company’s direct-air-capture technology is still being scaled for integration.

The system combines three established steps. Renewable electricity powers electrolysis to split water into hydrogen. Carbon dioxide is supplied to a methanation reactor, where it reacts with hydrogen to form methane and water. The resulting synthetic natural gas is chemically compatible with existing pipelines, storage and gas-burning equipment. Rivan’s engineering proposition is to package electrolysis, carbon supply and methanation into a modular system that can be deployed in arrays rather than engineering each installation from scratch.

Rivan announced the 1 MW deployment in August and said commissioning was under way. It has not publicly provided audited output, uptime or full levelised-cost data for the plant. The company says its redesigned electrolyser and reactor lower hardware costs sharply compared with industry benchmarks, but those comparisons are company claims rather than independent measurements. The system is therefore beyond a laboratory proof of concept, yet still short of the operating record needed to demonstrate repeatable commercial performance.

That distinction matters because new coverage has described the broader idea as turning air, water and electricity into pipeline gas. Rivan’s intended end-state does include direct-air capture, which would pull dilute carbon dioxide from the atmosphere. Its current 1 MW plant does not yet do that. According to Rivan’s own deployment notice, the unit uses liquefied biogenic CO₂, and the direct-air-capture system is being scaled. Biogenic carbon can still support a low-emission pathway, but it is a different feedstock, infrastructure and cost problem from capturing carbon directly from ambient air.

The company’s newly opened Production Base 1 in South Bermondsey is meant to industrialise the approach. Rivan says the 60,000-square-foot site can reach 50 MW of annual system output—equivalent to 50 one-megawatt modules—and includes 25,000 square feet of research space for the reactor, electrolyser and air-capture equipment. The first systems are scheduled to leave the assembly line in early 2027. A larger second base planned for 2028 would increase output by ten to twenty times, though those figures remain targets.

A separate partnership with Wales & West Utilities is intended to place Rivan’s first grid-connected commercial project in Wiltshire. The parties say the planned plant would use solar power, electrolysis and methanation, then inject compliant gas into Britain’s existing network. Grid compatibility is e-methane’s core advantage: it can use assets built for fossil natural gas and provide storable energy for periods when wind and solar output are low. The grid project has been announced, but Rivan has not yet reported first injection or sustained commercial operation.

Cost will decide whether that infrastructure advantage outweighs the conversion penalty. The Wall Street Journal reported on October 25 that Rivan says its methane can be produced below the current European natural-gas benchmark, which the newspaper put near €90 per megawatt-hour, without disclosing a detailed price. That benchmark is elevated by geopolitical pressure and is not a durable proxy for competitiveness. Rivan’s April partnership announcement instead set a goal of reaching cost parity by 2028, underscoring that the comparison depends on assumptions about power, carbon, financing and the fossil-gas reference price.

Independent analysis sets a demanding baseline. The International Energy Agency estimates that roughly half of the primary energy supplied can be lost across electrolysis and methanation. It also notes that synthetic methane can cost substantially more than the hydrogen used to make it because of methanation equipment, efficiency losses and carbon sourcing. Direct electrification will usually use renewable electricity more efficiently where heat pumps, electric furnaces or batteries can do the job. E-methane’s strongest potential is in high-temperature industry, seasonal storage and other applications where molecules or existing gas infrastructure have unusual value.

INNOVOX analysis: Rivan is testing whether manufacturing discipline can change the economics of a familiar chemistry. A standardised module could shorten development cycles, reduce interface failures and let capacity grow by adding units. But modularity does not erase the physics of two energy conversions, and a gas marketed as low carbon still releases carbon dioxide when burned. Its lifecycle result rests on the origin of that carbon, genuinely additional low-carbon power and tight control of methane leakage. The decisive evidence will be measured output and cost after commissioning, followed by direct-air-capture integration and independently audited emissions—not factory capacity alone.

INNOVOX analysis

Rivan’s consequential innovation is the attempt to manufacture the whole power-to-gas chain as repeatable modules, not a new chemical reaction. That integration could reduce project risk and construction time. Its climate and commercial case will nevertheless depend on verified system efficiency, low-carbon electricity, the carbon source, methane leakage and the cost of competing direct electrification.

What to watch

Watch for commissioning data from the 1 MW unit, independently verified production cost and uptime, integration of Rivan’s direct-air-capture equipment, a first grid injection with Wales & West Utilities, and evidence that Production Base 1 can deliver its planned early-2027 manufacturing ramp. Lifecycle emissions and methane-leak measurements will be as important as nameplate capacity.