Methane, under control. From every liquid system on Earth.

Bluemethane exists to end methane emissions from liquids. Our mission is to prevent one billion tonnes of greenhouse gas from liquid waste streams by 2050.

A world where methane no longer comes from liquids

Methane escapes from wastewater treatment, anaerobic digestion, reservoirs and other liquid systems – largely unmeasured and unmanaged. It is one of the fastest levers we have on near-term warming, and for most operators it is also invisible.

We started Bluemethane to change that. Our vision is a world where methane emissions no longer come from liquids. Our job is to make those emissions visible, preventable and economically recoverable, turning methane from an infrastructure liability into a measurable operational variable.

Learn more about methane

How we are making it real

Each of our technologies answers one question a water operator has to answer.

Question

Technology

What it does

Measure

Question How much methane am I wasting?

Technology Emily — real-time methane measurement for liquids

What it does Accurate methane measurements, of entrained and dissolved, to ±10%, with a result at least every 15 minutes.

Capture

Question Can I recover methane instead of losing it?

Technology Chloe — methane degassing and recovery

What it does The same quality biogas you already collect from your digester: usable, high-quality, methane-rich biogas.

Prevent

Question Can I stop methane forming when I’ve recovered all I can?

Technology Brutus — methanogenesis deactivation and prevention

What it does Can stop up to 99% of further methane being produced.

Designed to integrate with existing infrastructure, reduce emissions, improve efficiency and support regulatory and net zero targets.

Where Bluemethane came from

Bluemethane began with a newspaper article: a 2016 Guardian report that hydroelectric dams emit a billion tonnes of greenhouse gases a year.

In the warm winter of 2018–2019, Néstor started thinking about it.

Louise and Néstor met in March 2021, living in two different countries but both trying to solve the same challenge. In May 2021 they gave up their day jobs to pursue methane emissions from liquids, all without ever having met in person. They met face to face for the first time in September 2021.

Year

Milestone

2018–19

Néstor begins thinking about methane emissions from reservoirs

2021

Louise and Néstor meet (March), leave their jobs (May), meet in person (September);
Bluemethane Limited incorporated 26 May

2024

First production-scale methane-capture unit deployed at a biogas plant

2025

Completed a project with eight UK water companies to demonstrate methane capture and prevention

The people behind the science

A specialist team of engineers, scientists and commercial leaders — working on one problem.

Louise Parlons Bentata
Co-founder & CEO
Louise leads Bluemethane’s commercial strategy, customer and regulatory engagement. Before founding Bluemethane she advised engineering and manufacturing businesses on strategy, brand and lead generation, and worked with Johnson & Johnson and L’Oréal. She holds an MBA from INSEAD, an MA in Geography from the University of Cambridge.

Néstor Rueda-Vallejo
Co-founder & CTO
Néstor leads Bluemethane’s technology development. A mechanical engineer (BSc, MSc), he specialises in structural integrity and process optimisation using computational modelling, and worked with hydropower and mining firms across Europe and Latin America before co-founding Bluemethane.

Science first, and shown to you

Evidence over adjectives

Every performance claim on this site links to the data, method or source behind it.

Measured, not modelled, where we can

We show how a number was obtained and under what conditions.

Open technical information

Datasheets and technical leaflets are available to download without contacting us.

Honest about limits

If a figure is not yet confirmed, we say so.

Let’s put methane under control together.

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