Nature already
solved waste.
We engineered it.
Our patented biorefinery is modelled on the way a cow digests. It takes sewage sludge and organic waste that cities pay to bury — and returns renewable gas, living fertiliser and carbon credits. Proven in the field. Scaling now.
// Move your cursor — the digester is feeding · click to send a pressure wave
in India
Bell Island, Nelson
awards & honours
across Aotearoa
Every council is sitting on a
problem that only grows.
Sewage sludge and organic waste are treated as a cost — trucked, buried, and emitting methane for decades. New Zealand also carries an offshore carbon bill it can't pay down with more landfill.
Rising disposal cost
Biosolids handling, trucking and levies climb every year, with tightening rules on land application and PFAS closing off the cheap options.
Locked-in emissions
Landfilled organics release methane — a greenhouse gas ~28× more potent than CO₂ — long after the truck has left.
New standards, old plants
Taumata Arowai's environmental performance standards mean much of the existing treatment fleet simply won't meet consent — replacement is coming whether or not it's planned for.
A stomach, engineered.
The Bioenergy Resource Recovery Plant blends nitrogen-rich sewage sludge with carbon-rich food and garden organics — FOGO — for the carbon-to-nitrogen balance its microbes need. The blend then passes through six sequential chambers, each culturing its own microbial community and handing its output to the next — drawing energy and nutrients out of waste that conventional treatment can only bury.
Tap or hover a stage to trace it in the reactor →
- 01
Intake, blend & thermal hydrolysis
Sludge is balanced with FOGO for a stable carbon-to-nitrogen ratio, then thermally hydrolysed to rupture cell walls and lift biogas yield.
- 02
Hydrolysis
Complex solids are broken into soluble compounds — the first chamber of the rumen.
- 03
Acidogenesis
Microbial communities ferment sugars and acids, priming the stream for gas.
- 04
Acetogenesis
Intermediate acids convert to acetate, hydrogen and CO₂ — fuel for the final stage.
- 05
Methanogenesis
Archaea release biogas: a renewable, pipeline-grade energy carrier.
- 06
Recovery
What remains is captured as living fertiliser and verified carbon — nothing is landfilled.
Why a cow? A cow turns fibrous waste into energy and fertility through a sequence of specialised stomachs. The BRRP does the same — six staged chambers, each hosting a distinct microbial community, digesting what conventional treatment plants pay to dispose of. Our plant is patented on that same six-stage architecture, so it runs stably on feedstock that defeats conventional digesters.
Everything on this page is that idea, rendered live — six droplets, one field, nothing wasted.
Waste goes in.
Three markets come out.
Unlike a treatment plant that only spends money, the BRRP earns from every tonne — turning a civic cost centre into revenue-generating infrastructure. Choose an output and the field transmutes with it.
Built, permitted, funded, replicating.
Reference plant · Yamunanagar, India
A full commercial-scale co-digestion plant, built by our partners Texol and running in the field for years — proof the process handles real, messy feedstock reliably. We evolved that model into the six-stage BRRP.
OperationalFlagship demonstration · Bell Island, Nelson
A 20 tonne-per-day plant — government-backed, consented, and under contract — the reference site that turns councils from interested to contracted.
Government-backed · consented · under contractA bankable regional model in a day
AI-driven data processing turns a region's waste streams, volumes and logistics into a plant model inside a single workshop — compressing months of feasibility into one day, so councils and partners can move to decisions fast.
1-day regional modelGrounded in te ao Māori
Partnerships with iwi including Ngāti Toa Rangatira reflect kaitiakitanga at the core of the model — infrastructure that restores the land it draws from, not just extracts value.
KaitiakitangaNew Wastewater Environmental Performance
Standards meet a bankable answer.
The market isn't speculative. New wastewater environmental performance standards (WEPS) from the Water Services Authority — Taumata Arowai are mandating change, a national biomethane strategy is quantifying the prize, and councils need a partner who can deliver — today.
- Proven technology de-risks the hardest part — the plant already works in the field.
- Three revenue lines per site — gas, fertiliser and carbon — not a single-product bet.
- Regulation is the tailwind — new standards convert "nice to have" into "must build".
- Replicable model — one validated design, rolled across regions and, next, offshore.
Contact us.
Tell us what you're working with — we'll be in touch.
// Ngā mihi nui — thank you for looking.