Industrial • Standby • Portable • Home • Marine • Sales • Service • Hire
Generator sales, service and support across New Zealand.
Shaw Diesels supplies, installs, services and maintains diesel generators for industrial, standby, portable, home and marine applications — from 5 kVA backup units through to 2200 kVA industrial systems.
A diesel generator needs to start at the flick of a switch and keep running for as long as you need it to. Whether you’re powering a home off the grid, keeping a construction site running, or protecting a hospital from a mains outage — Shaw Diesels has the right generator and the expertise to back it up.
We represent leading generator brands including DEUTZ Power Solutions, Isuzu Power Solutions, Lister Petter, Zenith Engineering, Vortum and Green Power, and provide full lifecycle support: sales, installation, commissioning, scheduled servicing, emergency repairs and 24/7 call-out. Based in Auckland and Christchurch, with service coverage across New Zealand and the Pacific.
Find the right generator for your application.
Not sure which type of generator you need? Here’s a quick guide to our six categories — or contact us and we’ll help you work it out.
Industrial Generators
Heavy-duty generator sets for construction sites, mining operations, agriculture, manufacturing and commercial facilities. Open-frame and canopied configurations from 12 kVA to 2200 kVA.
Standby Generators
Automatic backup power systems with transfer switches for hospitals, data centres, government facilities, water treatment, schools and commercial buildings. Seamless switchover when the mains fails.
Portable Generators
Portable diesel generators for construction, trades, agriculture, events and Pacific Island operations. Compact enough to trailer between sites, robust enough to run all day.
Home Generators
Diesel generators for off-grid homes, lifestyle blocks, remote properties and Pacific Island communities. We supply, install and service home generators from 5 kVA upwards.
Marine Generators
Isuzu-powered marine generators from Vortum (super-silenced, 7.5–18.5 kVA) and Zenith Engineering (20–100 kVA). For leisure, charter, commercial fishing and ferry operations.
Generator Hire & Lease
Don’t need to buy? We offer generator hire and long-term lease options for projects, seasonal requirements and operations where ownership isn’t the right fit.
Generator brands we sell and service.
Shaw Diesels is an authorised dealer for these generator and engine brands. Each brand page has the full range and technical details.
DEUTZ Power Solutions
The DPS range: 13–770 kVA generator sets for standby, prime power, industrial and hybrid applications. Powered by genuine DEUTZ engines.
Lister Petter
Diesel generators for home, portable and industrial use. Renowned for durability, fuel efficiency and ease of maintenance in remote locations.
Isuzu Power Solutions
Authorised Isuzu dealer. Isuzu engines power the Zenith marine generator ranges and are trusted across industrial and agricultural applications worldwide.
Zenith Engineering
Isuzu-powered marine gensets from 20–100 kVA in single and three-phase configurations. Built to spec for commercial fishing, charter, ferry and large leisure operations.
Vortum
Super-silenced marine generators from 7.5–18.5 kVA. Just 57 dB at seven metres under full load — quieter than a normal conversation. Built by Zenith Engineering.
Green Power Generators
Don’t see your engine brand here? We rebuild virtually any diesel engine. Call us to discuss your requirements.
New and reconditioned generators for sale.
From compact 5 kVA home units through to 2200 kVA industrial systems — we’ll match the right generator to your requirements and budget.
Shaw Diesels supplies new generators from the brands we represent, as well as quality reconditioned and rebuilt units for operations where a new generator isn’t the most cost-effective option. Every reconditioned generator is inspected, tested and backed by our warranty.
Request a quote
Not sure what generator size or type you need?
Our team will assess your power requirements, recommend the right generator, and handle delivery, installation and commissioning.
We can also design and build custom generator solutions for applications where a standard unit won’t fit — see our Custom Solutions page for more information.
Custom Solutions
Generator repairs, servicing and service contracts.
A generator that won’t start when you need it is worse than no generator at all. Regular servicing is the single most effective way to ensure your generator performs when it matters.
Shaw Diesels offers scheduled maintenance programmes and service contracts for generators of all sizes. Our diesel engineers service and repair generators from every brand we sell, and many others. Whether it’s a routine annual service or a full overhaul, we have the expertise and genuine parts to get it done right.
Service & support you can rely on.
We currently hold service contracts at high-profile sites including Auckland Hospital and the North Shore Treatment Plant — so you can trust us with your critical backup power.
- Scheduled servicing — regular maintenance programmes tailored to your generator and operating hours
- Service contracts — fixed-term agreements for ongoing maintenance and priority call-out
- Diagnostics and repairs — fault-finding, component replacement and performance tuning
- Genuine parts — from the brands we represent, or sourced through manufacturer supply networks
- Control panel servicing — repair and supply of electrical control panels and DSE controllers
Contact Us
24/7 emergency call-out.
Generator breakdowns don’t wait for business hours. Neither do we.
Shaw Diesels provides 24-hour, 7-day emergency call-out for generator failures across New Zealand. When your backup power is down and you can’t afford to wait, our team will respond — day or night.
Based in Auckland and Christchurch, with mobile service capability throughout New Zealand and the Pacific Islands. We regularly service generators in remote locations, island communities and offshore sites where getting the right engineer with the right parts is critical.
call 0800 3388 969