Rent or Buy? Choosing Generator Power for Projects of 12 Months or More
The short answer: a new 1,250 kVA (about 1 MW) diesel generator costs around USD 220,000 (about AED 808,000). Renting the same capacity for 12 months or more starts from about AED 32,000 per month, excluding fuel. The purchase price alone equals roughly 25 months of rent, before servicing, overhauls, standby units, storage and resale losses. For projects up to about two years, renting is almost always cheaper. Buying starts to make sense when the load is stable for several years and you have your own team to maintain the equipment.
Rent vs buy at a glance
| Factor | Rent | Buy |
|---|---|---|
| Upfront cost | None | About USD 220,000 per 1,250 kVA unit |
| Maintenance and repairs | Provider's responsibility | Your team, parts and downtime |
| Standby unit (N+1) | Added per month when needed | Bought and kept idle |
| Change in load | Add or return units | Fixed fleet, over or under capacity |
| After the project | Return the units | Store, redeploy or sell at a loss |
| Best for | 1 month to about 2 years, changing load | Several years, stable load, in-house O&M |
The break-even in numbers
Compare the total rental cost with the purchase price of one new 1,250 kVA unit (about AED 808,000 at USD 220,000):
| Project length | Rental from AED 32,000/month | Purchase price (equipment only) |
|---|---|---|
| 12 months | AED 384,000 | AED 808,000 |
| 24 months | AED 768,000 | AED 808,000 |
| 36 months | AED 1,152,000 | AED 808,000 |
On equipment cost alone, renting stays cheaper for about the first 25 months. Ownership costs push that break-even point further out, while resale value pulls it back in. The full comparison is:
- Rental: monthly rate × months
- Ownership: purchase price + servicing + overhauls + spares + storage + transport − resale value
The hidden costs of owning a generator
The purchase price is only the start. A generator running 24/7 works 8,760 hours a year, and owners pay for:
- Scheduled servicing. Oil, filters and inspections every few hundred running hours, which on continuous duty means every few weeks.
- Major overhauls. Engines on continuous duty need top-end and major overhauls after tens of thousands of hours.
- Spare parts and technicians. Keeping critical spares and qualified staff on site or on call.
- Standby capacity. For critical loads, a second unit that sits idle most of the time.
- Storage and transport. A yard between projects and the cost of moving heavy units.
- Resale loss. Used generators with high running hours sell well below their purchase price.
When renting is the better choice
- The project runs for less than about two years.
- The load will change as the project grows or winds down.
- You need N+1 redundancy without buying idle equipment.
- There is no in-house team to maintain generators.
- A grid connection or permanent plant is expected later.
When buying, or a permanent plant, makes sense
- The site will need power for several years with a stable load.
- You have qualified maintenance staff and a spare parts supply.
- A gas supply is available. For long-term loads, a gas-fired plant usually runs at lower fuel cost than diesel. SINTAQA designs and builds gas-fired and CHP plants and can operate them under an O&M contract.
For a detailed breakdown of rental rates by capacity and fuel consumption, see how much it costs to rent a 1 MW generator in the UAE. Planning a project of 12 months or more? Request a quote with your load and timeline, and we will compare rental and permanent options for you.
Frequently asked questions
How much does a new 1 MW diesel generator cost?
A new 1,250 kVA (about 1 MW) containerised diesel generator costs around USD 220,000, or about AED 808,000.
Is it cheaper to rent or buy a generator for a 1-year project?
Renting. Twelve months of rental from AED 32,000 per month totals about AED 384,000, less than half the purchase price of a new unit, and the provider covers maintenance.
After how many months does buying a generator pay off?
The purchase price of a new 1,250 kVA unit equals about 25 months of long-term rent. Servicing, overhauls, storage and standby units push the real break-even further out.
How much does long-term generator rental cost in the UAE?
From about AED 32,000 per month for 1 MW (one 1,250 kVA unit) on projects of 12 months or more, excluding fuel.
When should I consider a permanent power plant instead of rental?
When the site needs power for several years and has a stable load, especially if natural gas is available.