HYDI Hydrogen unit - Australian-made hydrogen on demand for diesel engines
Australia's Authorised HYDI Reseller

Cut your diesel costs.
Without changing
your engines.

Bolt-on hydrogen unit. No engine modification.
Pays for itself in under 12 months.

Calculate my savings › View the Results
15%
Fuel Saving
Verified by Scania OBM · Pilbara WA
400+
Units Deployed
MinRes · 3+ years · zero issues
~4mo
Typical Payback
400,000 km/yr at $2.00/L diesel
80%
DPM Reduction
UniSA independent testing
CAT 793F mining haul truck overlooking a green Australian landscape - representing cleaner heavy diesel fleets with HYDI
Australia's Authorised HYDI Reseller

A Cleaner
Diesel Fleet.

Heavy on power. Light on emissions.

Cut emissions across CO₂, NOx, and DPM
in the trucks that need it most.

Calculate my carbon reduction › View the Results
80%
DPM Reduction
UniSA independent testing
22%
NOx Reduction
Holcim/Scania Pilbara
17%
CO₂ Reduction
Holcim/Scania Pilbara
Verified
UniSA · Scania · Volvo
Independent testing
Scroll

Proven fuel savings

Real numbers.
Real conditions.

Real Australian fleets. Independently measured.

15%
less fuel
Holcim cement haulage
Pilbara WA. Verified by Scania's onboard system.
12.4%
less fuel
Liontown mine haulage
Kathleen Valley WA. 71,815 km independently audited.
19.7%
less fuel
WA Government rail project
CAT loader on Public Transport Authority site.
14%
less fuel
MinRes mining road trains
300 Kenworth trucks running 3+ years. Zero issues.
8%
less fuel
Hi-Trans long-haul freight
Over 1 million km in side-by-side trial.

What industry leaders say

Verified by the
companies that matter.

“

Holcim has seen fuel performance savings estimated at 15% when hauling payloads up to 100-tonnes in three-trailer combinations. The Scania onboard management system confirms these figures.

Robert Taylor - General Manager Mining, Scania Australia

Scania
“

We're seeing 17% less carbon dioxide, 80% lower diesel particulate matter, 22% lower nitrogen oxides, and 25% lower carbon monoxide.

Adam Evans - Logistics Manager, Holcim Western Australia

Holcim
AdBlue jerry can in a truck workshop

The cost of clean diesel

The AdBlue
headache.

Sensor faults. Crystallised lines. Trucks derated mid-haul. Cleaner emissions shouldn't cost you uptime.

HYDI cuts NOx 22% at the source.
Less AdBlue. Less SCR drama.

How does this work?

At the source vs after-treatment

NOx forms inside the engine's combustion chamber when diesel burns. The hotter the burn, the more NOx. There are two ways to deal with it.

After-treatment. Let the engine make all the NOx it normally would, then clean it up downstream in the exhaust. That's SCR with AdBlue. AdBlue gets injected into hot exhaust gas, reacts with NOx, turns it into nitrogen and water vapour. A chemical clean-up after the damage.

HYDI Source reduction. Make less NOx in the first place by changing how combustion happens. HYDI injects hydrogen into the air intake, making diesel burn faster, more completely, and at moderated peak temperatures. Less peak heat means less thermal NOx formed. Holcim and Scania measured a 22% drop.

The SCR system still runs. AdBlue still does its job. There's just less NOx for it to neutralise.

Live fleet calculator

See what HYDI saves your fleet.

Drag the sliders to match your data.
This is real data from real deployments across Australia.

Your fleet

Engine selected - consumption auto-set
Avg fuel consumption (L/100km)53
1030507090120150
Number of vehicles10
150100150200
Avg km per vehicle / year78,000
10k250k500k750k1M
Diesel price ($/L)$2.00
$1.00$2.00$3.00$4.00$5.00
Operating conditions

Expected fuel saving based on proven HYDI deployments.

Your estimated annual HYDI impact

$0
Annual
fleet fuel savings
0 tonnes
Annual
CO₂ reduction
Fuel saved per vehicle$0
Litres of diesel saved0 L
CO₂ emissions reduced0 kg
Particulate reduction~70%
Est. payback period0 months
0 mo6 mo12 mo18 mo24 mo

Payback based on HYDI hardware only.
Contact Scott for a full quote tailored to your fleet.

* Hardware is HYDI unit + AR17 auto-refill tank (where required). Installation arranged separately.
** Figures are an indicative estimate based on verified HYDI deployments.

Scott will be in touch within 24 hours
Free consultation · No obligation · Australia-wide
Estimates based on Australian Bureau of Statistics averages and HYDI deployment data.
Actual results vary by engine type, operating conditions, and usage patterns.
Contact Scott for a tailored fleet assessment.

Why choose HYDI

10 years of engineering.
A decade of proven results.

🔒

Warranty safe

No engine modification. Never triggered a successful warranty claim. Scania honoured full R&M on Holcim fleet. MinRes directed their OEM to accept all 300 units.

⚡

Zero stored hydrogen

Generated on demand only. Activates at 600–700+ RPM. Shuts off when engine stops. ISO certified.

📊

Dual-verified data

Macnaught flow metres cross-validated with Volvo ECU. 2,036 hourly satellite data points. 1.08% variance between instruments.

♻️

ESG & Safeguard

Quantified CO₂ reduction helps win tenders, reduce licence costs, and meet Safeguard Mechanism obligations.

🔧

20-year lifespan

One consumable: distilled water = 1 litre per 30–37 hours. PEM replaced at ~8,000 hours. Fully transferable between vehicles.

HYDI HY1800h - Australian made, stainless steel

Australian made

Headquartered in Hendon, Adelaide SA. 10+ years R&D. Stainless steel construction. Manufacturing, support, and refurbishment all handled locally.

Get in touch

Ready to cut your
fuel bill?

Scott Arnold - SOLE Nation
Scott Arnold
Authorised HYDI Reseller - Australia
0419 710 736 hydi.com.au

Scott will put together a custom fuel saving breakdown for your fleet - typically within one business day.

Scott will respond within one business day.