25kVA Diesel Generator Hire

Reliable power from a 25kVA generator hire for medium to larger sites, tools and temporary setups, with fast delivery across Sydney, Melbourne, Brisbane and Adelaide. Opt Hire supplies site-ready equipment that is tested, tagged and ready to perform.

Get A Quote

Call 1300 678 447

25kVA Generator Specifications

Power Output	25kVA / ~20kW
Fuel Type	Diesel
Brand	Perkins / Cummins / Kubota / Trime (varies)
Phase	Single / 3-phase (model dependent)
Fuel Tank	120L
Runtime	25 hours
Noise Level	64.7dBA
Starting Type	Electric start
Dimensions	2132x780x1304mm
Weight	774kg

Contact our team full datasheets and specific model specifications.

Contact Team

What Does a 25kVA Generator Power?

A 25kVA generator hire solution is ideal for larger-scale applications where consistent and reliable power is required across multiple systems and equipment.

Typical uses include:

Medium to large construction sites running multiple tools and machinery
High-demand equipment such as compressors, mixers and welders
Site offices, facilities and welfare units with higher power needs
Events requiring lighting rigs, staging and sound systems
Workshops and temporary facilities with continuous energy requirements

This size offers greater capacity than smaller generators, making it well suited to projects that need reliable, uninterrupted power across several applications.

For larger requirements, see 30kVA diesel generator hire

For smaller jobs, see 20kVA diesel generator hire

Why Choose a 25kVA Diesel Generator

A diesel 25kVA generator hire provides reliable, long-running performance in demanding environments where uptime is critical.

Diesel generators at this size are commonly chosen because they offer:

Fuel-efficient operation for longer runtimes
Strong and stable output across multiple loads
Increased capacity for heavier equipment and mixed usage
Durable performance in construction and industrial environments
Reliable off-grid power for remote and temporary setups

Diesel generators remain the preferred option for mid-to-large power requirements where reliability, efficiency and durability are essential.

Explore Diesel Generators

How Hiring a 25kVA Generator Works

Hiring a 25kVA generator from Opt Hire is straightforward:

What's Included

Generator supplied ready for operation
Fuel level checked prior to delivery
Optional leads and distribution boards
Ongoing support and swap-out options if required

1. Enquire

Tell us what you need to power and your site requirements.

2. Confirm

We recommend the right 25kVA generator hire setup including accessories if required.

3. Delivered

Your generator arrives tested, tagged and ready for operation.

Areas We Serve

Generator Hire Across

NSW VIC SA QLD

We provide 25kVA generator hire Sydney, Melbourne, Brisbane and Adelaide, with delivery available across metro and regional locations.

We support projects across key commercial and industrial hubs including Parramatta, Blacktown, Wetherill Park and Alexandria, with delivery available across broader New South Wales.

We service metro and major project zones such as Thomastown, Epping, Tullamarine and Dandenong, with coverage extending across Victoria.

We supply power solutions to high-demand areas including Eagle Farm, Logan, Ipswich and Northgate, along with regional Queensland locations.

We cover industrial and project-focused areas such as Wingfield, Regency Park, Lonsdale and Gepps Cross, with service available across South Australia.

Get A Quote

Call 1300 678 447

Testimonials

OPT HIRE has been an invaluable partner to our project at Sunbury Road, Victoria. Their sustainable portable building solutions not only met our specific needs but also aligned perfectly with our commitment to reducing our carbon footprint.

Daniel, Construction Manager

I sincerely commend OPT HIRE for their outstanding support throughout the Lathams Road Project. The team’s commitment to supporting the project was invaluable. Their sustainable asset offering of hybrid power and lighting solutions not only aligned with our environmental goals but also significantly reduced our carbon footprint.

Ben, Project Director

Projects We've Powered

Keeping a Close Eye on Queensland Construction Sites

Opt Hire has supported a number of clients in Queensland with innovative site security solutions using sustainable CCTV technology to minimise theft and reduce operational downtime.

Revolutionising Power Solutions: The Instagrid Advantage

Unsure of the benefits associated with using Instagrid’s lithium-ion batteries as opposed to traditional diesel generators to power equipment on construction or industrial worksites? Here’s two real-world examples illustrating the advantages.

Winslow Reaps the Rewards of Battery-Powered Compaction

Since 1985, Winslow Infrastructure, a subsidiary of Winslow Group, has been responsible for the ongoing management of drainage works at the RBR Project in Truganina.

Lighting the Way for Maca Civil Staff

A competitive Tier 2 company working on the North East Link Project, MACA Civil is well-known throughout the civil infrastructure sector for partnering with Tier 1 companies on large-scale projects valued over $100M.

ALL CASE STUDIES

Generator Faq's

What does a 25kVA generator power?

A 25kVA generator can power medium to large construction sites, compressors, welders, site offices, lighting systems and multiple tools running at the same time. It is commonly used where more capacity is needed than entry-level generators, but without moving into large industrial units.

How long will a 25kVA diesel generator run on a full tank?

A 25kVA diesel generator is designed for extended daily operation across full work shifts, with runtime depending on load and fuel tank size. It is well suited to projects requiring consistent, reliable power throughout the day.

How much does it cost to hire a 25kVA generator?

The 25kVA generator hire cost depends on hire duration, delivery, fuel requirements and any accessories such as distribution boards. These generators are typically used for medium-scale sites where steady, reliable power is required across multiple systems.

Is a 25kVA generator single or 3-phase?

Most 25kVA diesel generators are available in both single and 3-phase configurations. 3-phase units are commonly used for mixed equipment loads and construction applications requiring balanced power supply.

Can I hire a 25kVA generator long-term?

Yes, 25kVA generator hire is commonly used for short- to medium-term construction, commercial and temporary site setups, with longer-term hire available depending on project requirements.

Get Reliable 25kVa Power on site

Need a dependable 25kVA diesel generator?

Talk to Opt Hire for practical advice, fast quotes and site-ready delivery.

Get a Quote for 25kVA Generator Hire here:
Click Here

Call 1300 678 447 to Speak with Our Team

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