Genset rental for factories gives you standby power the moment the TNB supply trips or there's scheduled maintenance, so your production line, cold storage and machinery never grind to a halt. Most factories run larger units in the 100kVA–500kVA+ range with an ATS (Automatic Transfer Switch) for automatic changeover. The gensets are DOSH certified, from RM80/day depending on size and duration.
A single hour of downtime in a factory can ruin an entire batch, thaw your cold storage, or stop a line that costs thousands of ringgit to restart. A standby genset keeps operations running even when the grid goes down.
When does a factory need a standby genset?
A factory needs a standby genset any time there's a risk the TNB supply could be cut — whether that's a sudden trip or scheduled substation maintenance.
TNB sometimes issues maintenance notices for industrial areas, and during those windows the supply can be down for several hours. Without a backup, the line stops and production costs keep stacking up.
On top of that, factories with cold storage, freezers, or a continuous process are the most exposed — even a brief interruption can ruin stock and half-finished products.
- Scheduled TNB maintenance (planned shutdown) in industrial areas
- Sudden voltage trips or blackouts that happen often
- Cold storage / freezers that can't lose power
- Continuous production lines that are expensive to restart
- As a permanent standby for critical 24/7 operations
What genset size (kVA) suits a factory?
Factories usually run larger gensets, in the 100kVA to 500kVA+ range, depending on the total load of the machinery and equipment.
The figures below are rough estimates only. Your actual load depends on the number of motors, compressors and chillers, plus the starting current of each machine — which typically draws far more power at startup than while running.
The most accurate approach is to prepare a load list (every piece of equipment and its rating) and we'll help size it correctly. An undersized genset will trip; an oversized one just wastes money.
- Workshop / small factory: roughly 60kVA–150kVA
- Medium factory with a few lines: roughly 150kVA–350kVA
- Large / heavy factory with cold storage: 350kVA–500kVA+
- Always confirm with a load list before booking — don't size it by guesswork
| Factory Type | Estimated Size | Typical Load |
|---|---|---|
| Small factory / workshop | 60kVA–150kVA | Light machinery, lighting, office |
| Medium factory | 150kVA–350kVA | Several production lines, compressor |
| Large factory / cold storage | 350kVA–500kVA+ | Heavy machinery, chiller, freezer |
What is an ATS and why does a factory need one?
An ATS (Automatic Transfer Switch) is a switch that automatically transfers supply from TNB to the genset within seconds when the grid drops — with no one having to start the genset manually.
For factories with cold storage or a continuous line, an ATS is all but essential. Automatic changeover means the machinery barely pauses, and you don't need staff on standby around the clock just to start the genset.
Without an ATS, every blackout means someone has to go and start the genset by hand — slow, risky, and that downtime is more than enough to spoil frozen stock or halt a critical process.
- Switches from TNB to genset automatically within seconds
- No standby staff needed for a manual start
- Protects cold storage and continuous processes from downtime
- We can supply the genset + ATS together — just tell us when you request a quote
Standby vs Prime power — which should a factory pick?
The choice comes down to how often you'll use it: standby for occasional backup, prime for when the genset is your main power source running for hours every day.
A standby rating suits most factories that only run the genset when TNB trips or during maintenance — limited, non-continuous use. It's the most cost-effective option for a backup role.
A prime rating is for factories in areas with no grid, sites with an unstable grid, or operations that need the genset running long hours every day. Tell us your usage pattern and we'll recommend the right rating.
- Standby: backup when TNB trips / during maintenance — occasional use
- Prime: main power source, running long hours every day
- Picking the wrong rating can hurt the genset's performance and lifespan
- DOSH certified for both types — safe for industrial use
| Factor | Standby | Prime |
|---|---|---|
| Role | Backup only | Main power source |
| Frequency | Occasional | Hours every day |
| Best for | Factories on the TNB grid | No grid / unstable grid sites |
How much does genset rental for a factory cost?
Rental starts from RM80/day, but the actual price for factory-scale sizes depends on a few key factors — it isn't a single fixed price.
The biggest factor is the kVA size: a 500kVA genset naturally costs more than a 100kVA one. Rental duration also plays a part — the daily rate usually drops for weekly or monthly hires.
Other factors include delivery cost, diesel, deposit, and whether you need an ATS or extra cabling. That's why we don't publish a fixed price list — send us your load list and location, and we'll work out an accurate quote.
- kVA size — the bigger it is, the higher the rate
- Rental duration — daily, weekly, or monthly (the rate drops for longer terms)
- Delivery + setup — depends on location and site access
- Diesel + deposit — usually separate from the rental rate
- ATS / extra cabling if required
- Factories use a standby genset to avoid downtime when TNB trips or during maintenance
- Typical factory sizes are 100kVA–500kVA+ — confirm with a load list, not guesswork
- An ATS is essential for cold storage & continuous lines — automatic changeover in seconds
- Standby for occasional backup; Prime for when the genset is your main daily power source
- Costs from RM80/day, based on kVA + duration + delivery + diesel — request a quote with your load list
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Genset rental for factories — standby when TNB trips, protect cold storage & production lines. 20kVA–500kVA+, ATS, DOSH certified. WhatsApp for a quote.
WhatsApp NowFAQ
What genset size suits my factory?
Factories typically use 100kVA–500kVA+ depending on the machinery load. These figures are estimates only — prepare a load list of all your equipment so we can size it accurately and avoid an undersized genset that will trip.
Can the genset start automatically when TNB trips?
Yes, with an ATS (Automatic Transfer Switch) installed. The ATS transfers supply from TNB to the genset within seconds with no manual start — essential for cold storage and continuous production lines.
What's the difference between standby and prime power?
Standby is for occasional backup when the grid is cut, which suits most factories. Prime is for a genset that serves as the main power source, running for hours every day. Tell us your usage pattern and we'll recommend the right rating.
How much does genset rental for a factory cost?
It starts from RM80/day, but the actual rate depends on kVA size, rental duration, delivery and diesel. For larger factory sizes, contact us with your load list and location for an accurate quote.
Can I rent a genset long-term for a factory?
Yes — we offer daily, weekly and monthly rental. For longer terms, the daily rate is usually lower. Ideal for ongoing standby projects or while TNB upgrades a substation.
Are your gensets DOSH certified?
Yes, our gensets are DOSH certified and safe for industrial use. This matters for safety compliance on the factory site. Contact us to check the certification details for the specific unit you're renting.