The next generation of energy starts here
Grown.
Not extracted.
An ocean-grown feedstock. A new source of renewable gas, fuel and chemicals.
A different starting point
The ocean grows it.
We turn it into possibility.
That changes everything.
Cleaner waters. Valuable products.
Seaweed absorbs excess nutrients as it grows. We cultivate it, turn it into a stable pelletised feedstock, and build a path to renewable products that work with existing infrastructure.
The Zenco platform
One marine crop.
A whole new value chain.
Three connected stages. From cultivated seaweed to gas, biochemicals and synthetic fuels.
Start in the ocean.
Offshore seaweed cultivation absorbs excess nutrients without using arable land or freshwater irrigation.
Make it work at scale.
Harvested seaweed is dried, blended and pelletised into a proprietary feedstock engineered for anaerobic digestion.
Unlock every output.
Anaerobic digestion produces biomethane and valuable digestate. Captured bio-CO₂ and hydrogen provide a route to synthetic fuels.
Three outputs. One platform.
Meet the next generation.
Renewable products designed around the infrastructure the world already uses.
Zenethane™
Biomethane produced through anaerobic digestion and upgrading, for injection into existing gas networks.
Zemicals™
Recoverable value from seaweed digestate, including nutrients and biostimulants for agricultural and other applications.
Zenthynol™
Drop-in synthetic fuels from captured bio-CO₂ and electrolysed hydrogen through RWGS and Fischer-Tropsch synthesis.
More than a feedstock
A better future.
From the water up.
Growing seaweed creates a connection between ocean restoration and the energy transition. A cultivated resource with a purpose beyond its harvest.
Next Generation Feedstock for
Bioenergy & Biofuel Production
Innovative Alternative Products for a Sustainable & Secure Future
Ocean Bioremediation → Renewable Products
Cleaning the ocean. Bio-alternatives on Land
Seaweed absorbs agricultural run-off and wastewater pollution from our oceans. We harvest it, pelletise it, and convert it into renewable energy, drop-in fuel, and synthetic fuel (Zenethane, Zemicals and Zenthynol) through anaerobic digestion — bringing ocean waste back to land as valuable products.
Grown, Not Extracted | Seaweed OpCo + Anaerobic Energy Co platform | Seaweed pellets → AD → Products
Outputs: Zenethane, Zemicals, Zenthynol
Over 500 Ocean Dead Zones Worldwide
Processing & distribution
Land
3
Ocean
The problem we solve
The ocean is drowning in our waste. We turn that waste into value.
Agricultural run-off and wastewater dumping flood our seas with excess nutrients, creating dead zones where marine life cannot survive. There are over 500 recorded dead zones Worldwide. Seaweed is nature's bioremediator — it absorbs these pollutants as it grows. We cultivate seaweed at scale in these damaged waters, harvest it, pelletise it, and process it through anaerobic digestion to produce renewable energy, drop-in fuel, and synthetic fuel. We bring ocean waste back to land as products that replace fossil-based ones.
Step 1
Seaweed absorbs pollution
Step 2
Pelletised for AD feedstock
Step 3
Gas, Fuel, Chemicals
How it works
From ocean waste to renewable products.
Our process starts in polluted waters and ends with three valuable products. Seaweed bioremediates the ocean, gets pelletised into stable feedstock, and is converted through anaerobic digestion into energy, biochemicals, and synthetic fuel.
Bioremediation at source
Seaweed naturally absorbs excess nitrogen, phosphorus, and heavy metals from agricultural run-off and wastewater. By cultivating at scal, we clean the ocean while growing our feedstock.
World's largest ocean dead zone
Natural nutrient absorption
Year-round cultivation
Pelletisation & stabilisation
Harvested seaweed is dried, blended with complementary inputs, and compressed into standardised pellets. This stabilises the biomass, optimises digestion performance, and makes it shippable — turning a marine crop into a reliable industrial feedstock.
>70% Seaweed grown in dead zone
Standardised pellet quality
Optimised for anaerobic digestion
Anaerobic digestion → 3 products
Pellets are processed through anaerobic digestion at our Bioenergy hubs, producing Zenethane (biomethane), Zemicals (biochemicals), and Zenthynol (synthetic fuel via Fischer-Tropsch synthesis) — all from one circular process.
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