When utility backlogs drag on for months, grid capacity falls short, or strict emissions targets loom, reliable power becomes your single most critical asset.
Sourcing that power isn’t as simple as ordering a piece of machinery. Before a generator is quoted, five decisions have to be made: whether to rent or buy, which fuel to run, what condition of unit fits the schedule, what size the load actually needs, and what duty the unit will be asked to do. Get them in the right order and the equipment choice mostly makes itself.
At NexSource Power we work through those decisions with you from our Red Deer head office and packaging facility, and stay with the unit after it ships, from rapid emergency deployments to engineered prime-power sites.
Rent or buy: cash flow against asset equity
Sourcing heavy industrial power isn’t just a technical decision. It’s a balance between protecting cash flow and building long-term equity, and it usually comes down to two things: how long the project runs and how predictable the load is.
| Factor | Rental fleet | Asset purchase |
| Project duration | Short-term, seasonal, or shifting timelines (under 12 months) | Permanent facilities or multi-year, continuous operations |
| Financial treatment | Operating expenditure (OpEx); keeps cash free | Capital expenditure (CapEx); builds asset equity |
| Load flexibility | Swap or scale up as site demand changes | Fixed capability, sized to your peak demand |
| Maintenance | Handled by NPI field service, 24/7 | Your own team, or a service contract |
Renting shields you from depreciation and a large upfront cost, which is why it suits exploratory drilling pads, short turnaround windows and emergency setups. Buying outright generally gives the lowest cost per kilowatt-hour over a long service life. Renting vs. buying an industrial generator works through the numbers in more detail.
Natural gas or diesel: sizing the system to local fuel access
Fuel logistics decide how complicated a site is to run and how it sits against emissions rules. Diesel accepts a large block load quickly; natural gas turns local fuel into a much lower cost of running continuously.
Natural gas: the prime-power benchmark
If your operation sits near a pipeline or produces its own gas, natural gas generators close the gap between emissions targets and dependable baseline power.
- Direct fuel sourcing: a stable pipeline supply, or treated associated field gas where quality allows, removes fuel trucking and the storage problems that come with it.
- Winter resilience: gaseous fuel has no gelling risk in sub-zero weather.
- Lower emissions: natural gas generator sets produce far less particulate matter than diesel and suit continuous, high-hour prime duty.
Diesel: mobile and resilient standby power
Diesel generators remain the default where there is no gas line, or where accepting the largest possible step load instantly is non-negotiable.
- Responsiveness: fast, heavy load acceptance and immediate deployment for highly variable sites.
- Trade-offs: that readiness comes with fuel-polishing schedules and storage-tank compliance to manage.
- Price exposure: unlike on-site gas, diesel leaves your operating budget exposed to crude pricing.
If you would rather own the set than rent it, diesel generators for sale shows what we have on offer today, each set priced on its own condition and hours.
Natural gas vs. diesel at 1 MW and above compares the two at larger scale.
See the natural gas rental fleet
New, surplus or used: matching condition to your schedule
When factory lead times stretch across several months, the project doesn’t have to wait. A surplus unit or a tested pre-owned package can close the gap between when power is needed and when a new build could arrive.
- Factory new: sized and packaged to your footprint, with a manufacturer warranty whose terms depend on the model and configuration. Best for permanent multi-megawatt installations, where the lead time runs alongside civil works anyway.
- New surplus: unused units from cancelled projects or overstock. New-equipment condition on a much shorter timeline.
- Used: used diesel or natural gas generators cut the upfront cost substantially. Every used and surplus unit we sell is load-bank tested and inspected before it leaves the yard.
For what to check before buying a pre-owned set, see used vs. new industrial generator sets.
Sizing: matching the unit to your load profile
Getting the size wrong is expensive. Undersize it and you get voltage dips and damaged equipment; oversize it and you get wet-stacking, wasted fuel and engine wear.
A stable system comes from mapping the real electrical profile: the steady baseline, and the spikes that come when large motors start.
- 50–150 kW: lighting, instrumentation, site offices and construction tooling. Mostly steady-state kVA matching and fuel economy.
- 200–500 kW: submersible pumps, medium compressors and conveyors. Sizing has to absorb motor-starting kVA spikes.
- 1–3 MW and up: data centres, heavy mining loads, large manufacturing plants and microgrids. Sizing is about N+1 redundancy and paralleling switchgear.
The commercial generator sizing guide walks through load profiles, starting current and duty cycle step by step.
Duty rating: standby, prime or temporary
A generator has to match the job it will actually do. Run a unit built for emergency standby around the clock as the primary source and it will wear out early and operate outside its rating.
- Emergency standby: low annual hours, absolute readiness. An automatic transfer switch (ATS) brings the unit on within seconds of a utility failure.
- Continuous prime: the main source of power where the grid is absent or uneconomic. Built for high hours and stable thermal performance under a steady load.
- Temporary and outage cover: trailer- or skid-mounted units on rental through facility turnarounds, substation maintenance windows and seasonal peaks.
Where the equipment works
NexSource Power builds, packages and deploys equipment for demanding field conditions across Western Canada:
- Oil and gas: upstream well pads and midstream facilities running artificial lift and compression, often on natural gas generators fuelled from the site itself, through severe winter cold.
- Mining and remote exploration: paralleled generation for remote camps and material handling, independent of the grid.
- Facilities and utilities: standby systems for manufacturing plants, water treatment and other critical infrastructure exposed to grid instability.
Support for the life of the unit
We stay with the equipment after it leaves the yard: load-bank testing and commissioning at the start, planned and predictive maintenance after that, and field technicians available 24/7 for service and emergency dispatch. NexSource Power is COR certified and maintains its standing on Avetta, ComplyWorks and ISNetworld.
