UK Office (HQ)
Address
Onnu Ltd, York House, York Road, Maidenhead, SL6 1SF,
United Kingdom
Making permanent carbon removal commercially viable at scale
Every year, enormous quantities of biomass are left to decay, releasing their carbon back into the atmosphere. We see that low-value biomass as an opportunity.
Our proprietary, patent-protected CarboFlow pyrolysis plants turn low-value biomass and difficult waste streams into valuable biochar, high-quality carbon removal credits and usable green energy, with economics that make projects work.
Our targets
Our CarboFlow technology delivers clean energy, while capturing carbon, manufacturing biochar and investing in local circular economies.
By 2030, we aim to have facilitated the annual delivery of:
160k tCO2e
of carbon
removed
80k t
biochar
manufactured
200 MW
of clean energy generated
across 29
operational pyrolysis sites
Our story
We see biomass pyrolysis and biochar as the most accessible and scalable of all engineered carbon removal processes, thanks to its relative simplicity, and ability to support profitable business models.
To ensure this sector thrives, and can have a game-changing impact in the fight against climate change, Onnu seeks to remove barriers to scaling, both for our own business and others, to expand and grow the market.
By 2030 we will have played our part building a world where no biomass is wasted, pyrolysis routinely generates localized green energy, biochar use is widespread and biochar CDR is removing mega tonnes of CO2 from the atmosphere.
OUR PEOPLE
Leadership Team
-
Giles Welch
Founder and CEO
Carbon market expert and entrepreneur, taking businesses from concept to scale.
-
Hélèna Theseira
Head of Compliance and Operations
Operations leader from regulated industries, focused on quality.
-
Seb Burn
Head of Engineering
Chartered engineer, 10+ years in pyrolysis plant design and operation.
-
Michael Douglas
Advisor
Revenue leader in technology and services, advising on commercial strategy for novel concepts.
-
Jon Lee
Advisor
Finance director and investor, advising on investment strategy.
Our locations
Cape Town
Address
21 Dreyer Street, Claremont,
Cape Town 7780,
South Africa
Phone
Malaysia Office
Address
A-29-8, Menara UOA Bangsar, Jalan Bangsar Utama 1, Bangsar 59000, Kuala Lumpur
Latest insights
Second CarboFlow unit expands biochar and renewable energy production at Aumkar Plantation
A second CarboFlow unit expands biochar production, renewable heat generation and verified carbon removal at Aumkar Plantation in Sabah, East Malaysia.
Second CarboFlow unit expands biochar and renewable energy production at Aumkar Plantation
Onnu approved as Isometric biochar equipment partner
We’re pleased to announce that, following a rigorous validation of our CarboFlow technology, Onnu has been approved as an official Isometric biochar equipment partner, with CarboFlow now a pre-approved pyrolyzer under Isometric’s pre-approval scheme.
Onnu approved as Isometric biochar equipment partner
Onnu employs automated feed monitoring through image recognition
Onnu has recently partnered with AI implementation specialist for engineering firms, Mainspring AI, to add automated feed monitoring capabilities to its current and future CarboFlow installations.
Onnu employs automated feed monitoring through image recognition