Partnering to achieve Net Zero today

We make Net Zero a reality now, not in the distant future, because neither the climate nor your business can afford to wait.

Taking your business, and the planet, to Net Zero

Onnu diagram

Businesses are struggling to balance affordable energy with reliable green initiatives to reduce emissions and reach their ambitious Net Zero goals.

Onnu builds and manages hubs that manufacture biochar using breakthrough pyrolysis technology. Our operations generate excess energy, and if our hubs are situated close to an energy partner, it can be delivered as a fully sustainable, carbon negative heat or cold energy source for industry.

Why partner
with us

Decarbonisation

Each of our Hubs can annually avoid 1,500 tCO2e emissions and remove 2,000 tCO2e.

Affordable, stable prices

Secure competitive energy rates for up to 10 years.

Managed service

We’ll build and operate the whole thing, so you can concentrate on your buiness.

Stable, sustainable onsite energy

Pyrolysis diagram

Green Energy Hubs are pyrolysis plants co-located with energy customers and owned and run by Onnu as a fully managed service.

We take local waste biomass and manufacture biochar, enabling us to offer you secure, green energy that is affordable now, and future proofed against price rises in the future.

How is this possible? The production of biochar creates a large volume of excess heat - a typical plant produces up to 2MW of thermal or cold energy - which can be delivered to you as a carbon negative source of energy. Not only this, but the process of manufacturing biochar qualifies for carbon removal credits, which further help to finance the operation and lower the price at which we can supply energy to you.

Can Onnu energy work for you?

Get in touch and we will deliver a free decarbonisation report for your business

Find out more

Green Energy

Our Green Energy Hubs produce large amounts of excess heat which can be delivered as a fully sustainable, carbon negative energy source for your business.

More green energy

Biochar

Biochar is a long-term store of carbon, and an effective soil additive improving plant yields and health. We are committed to producing it on a large scale to make a real difference in the fight against climate change.

More biochar

Technology

We build our plants with the most advanced technology from the worlds leading manufacturers, ensuring reliability and optimal performance.

More technology

Impact calculator

What do you currently pay for energy?

III

£ - per kWh

What are your energy requirements?

III

- kW

Annually

Over 10 years
(accounting for inflation)

Energy Savings

£ -

CO2 captured

-

tons CO2e

Emissions avoided
(from fossil fuels)

-

tons CO2e

Biochar manufactured

-

tons

Waste diverted

-

tons

Sustainable development goals achieved

Sustainable development goals affordable and clean energy
Sustainable development goals industry, innovation and infrastructure
Sustainable development goals sustainable cities and communities
Sustainable development goals responsible consumption and production
Sustainable development goals climate action

Carbon removal

Onnu is registered with both Verra and Puro.Earth. We follow the VCS or Puro’s Biochar methodology depending on which is best for the project, both of which secures the highest value Carbon Removal Credits for organisations looking to voluntarily offset their carbon footprint.

Latest insights

We're Hiring! Join us to make a real impact today

We're Hiring! Join us to make a real impact today

Company

These are exciting times at Onnu. Do you want to join us on this exciting journey? As we move into delivery mode, we are growing the team and looking for capable people who want their career to make a difference.

Read more
ChatGPT and AI: How will it impact climate tech and the wider world

ChatGPT and AI: How will it impact climate tech and the wider world

Climate news

ChatGPT is astonishing many who are encountering it, and promising to upend many aspects of business and communication. We put on our techie hats and take a look.

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Our COP27 Review - how did it measure up?

Our COP27 Review - how did it measure up?

Climate news
Carbon removal
Biochar

After two long weeks in Egypt we examine the key outcomes, and how it may affect the year ahead.

Read more

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