Natural Gas • LPG • Biogas • Hydrogen • Cogeneration
Gas engine sales, service and cogeneration.
Shaw Diesels supplies, installs, services and maintains gas engines and cogeneration systems for natural gas, LPG, biogas and hydrogen applications across New Zealand and the Pacific.
Gas engines are increasingly the power source of choice for operations that need cleaner emissions, lower fuel costs, or the ability to generate electricity from waste gas. From farm biogas cogeneration through to large-scale industrial natural gas power generation, Shaw Diesels has the products and expertise to deliver the right solution.
We represent DEUTZ, Green Power Generators and Lister Petter for gas engine sales, and provide maintenance support for MWM (DEUTZ) large-scale commercial gas engines. Whether you need a new gas engine, a cogeneration package, or ongoing service for an existing installation — we’re your single point of contact.
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Cleaner power for a growing range of industries.
Gas engines are used wherever operations need reliable power generation with lower emissions, reduced fuel costs, or the ability to turn waste into energy.
Dairy & agriculture
Biogas cogeneration from covered effluent ponds, generating electricity and hot water from farm waste.
Wastewater treatment
Methane capture from municipal and industrial treatment plants, powering on-site generation.
Landfill gas
Converting landfill methane into usable electricity rather than flaring it.
Industrial power generation
Natural gas and LPG engines for standby, prime power and peak shaving.
Commercial & institutional
CHP (combined heat and power) systems for hospitals, hotels, food processing and manufacturing.
Construction & material handling
Compact LPG-powered engines for forklifts, boom lifts and indoor equipment.
Natural gas and LPG engines.
Spark-ignited gas engines for industrial power generation, material handling and off-highway applications.
Natural gas (CNG/LNG) and LPG engines offer a cleaner-burning alternative to diesel for a wide range of industrial applications. They produce significantly lower particulate emissions and, depending on the fuel source, can deliver meaningful reductions in carbon output.
DEUTZ’s G 2.2 and G 2.9 series are compact, water-cooled LPG and CNG engines designed for off-highway mobile machinery — sharing the same footprint as the proven TCD 2.9 diesel platform, making them a straightforward swap for operations looking to transition from diesel to gas. For larger stationary and power generation applications, the DEUTZ TCG 914 and TCG 2015 series deliver natural gas power from 24 to 240 kilowatts.
Shaw Diesels can advise on the right gas engine platform for your specific requirements, and provide full installation, commissioning and ongoing service support.
Enquire about gas engines
Biogas and methane engines.
Turning waste into energy.
Biogas engines generate electricity and heat from methane produced by farm effluent, wastewater and landfill decomposition. Rather than flaring the gas or letting it escape, biogas systems capture it and convert it into usable power.
Shaw Diesels supplies Green Power biogas cogeneration packages designed for New Zealand conditions and regulations. These European-packaged units use proven American-built engines and are available from approximately 20 kW for farm-scale systems through to 70 kW and above for larger agricultural, wastewater and landfill operations.
For larger-scale methane power generation, Shaw Diesels also provides maintenance and support for MWM (DEUTZ) commercial gas engines capable of megawatt-scale output.
Enquire about biogas solutions
Cogeneration — heat and power from one system.
Combined heat and power (CHP) systems generate electricity while recovering waste heat for hot water, heating and industrial processes — improving overall energy efficiency.
Instead of wasting engine heat, cogeneration systems recover it through the engine water jacket and exhaust, producing hot water at 80–90°C for dairy shed wash-down, effluent heating, industrial processes and building heating.
Shaw Diesels supplies cogeneration packages complete with engine water-jacket heat recovery, SCADA-compatible control panels, generator protection and network synchronisation options — all configured to New Zealand electrical and gas safety regulations and backed by local service and support.
- Farm SDBIO20 — 4-cylinder engine, ~20 kW three-phase output, ~18 m³/hr biogas consumption. Suited to farm effluent systems
- Commercial SDBIO70 — Big Block V8 at 1500 rpm, ~70 kW three-phase output, ~65 m³/hr biogas consumption. For larger farms, municipal wastewater and landfill
Enquire about cogeneration
Hydrogen engines — the next generation.
DEUTZ has introduced the TCG 7.8 H2 — a six-cylinder hydrogen combustion engine now in full series production. Delivering 220 kW at 2200 rpm and 1000 Nm of torque, it’s designed for zero-emission stationary power generation and off-highway applications.
Unlike fuel cell systems, the TCG 7.8 H2 uses proven internal combustion technology, making it robust enough for demanding environments — resistant to extreme temperatures, vibration, dust and solar radiation. It runs on hydrogen with a minimum purity of 98% (ISO 14687).
As New Zealand’s hydrogen infrastructure develops, Shaw Diesels is positioned to support customers looking to adopt this technology.
Talk to us about how hydrogen power could fit into your operation.
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Gas engine brands we represent.
Shaw Diesels is an authorised dealer or service partner for the following gas engine manufacturers.
DEUTZ Gas Engines
G 2.2 and G 2.9 (LPG/CNG, 35–73 HP), TCG 914 (natural gas, 32–114 HP), TCG 2015 V6/V8 (natural gas, 220–322 HP with CHP capability), and the TCG 7.8 H2 hydrogen engine (220 kW).
Green Power Generators
European-packaged biogas cogeneration sets using American-built 4-cylinder, 6-cylinder & Big Block V8 engines. Optimised for biogas applications, New Zealand conditions and local regulations. 20–70+ kW.
Lister Petter Gas Engines
Spark-ignited gas engines for industrial and power generation applications, complementing the Lister Petter diesel range with the same reputation for durability and reliability.
Ready to talk about gas power?
Whether you’re exploring biogas cogeneration for your farm, need a natural gas engine for industrial power generation, or want to understand what hydrogen could mean for your operation — Shaw Diesels has the products and expertise to help.
We handle everything from initial consultation and system design through to supply, installation, commissioning and ongoing maintenance. Based in Auckland and Christchurch, with service coverage across New Zealand and the Pacific.
Let’s talk!