Reliable temporary power is essential on any construction site. From the first stages of groundworks through to final fit out, generators keep equipment operating, welfare facilities running and projects progressing to schedule.
However, selecting the wrong generator can create unnecessary challenges. A unit that is too small may struggle to meet demand, causing equipment failures and costly delays. On the other hand, an oversized generator can lead to higher hire costs, increased fuel consumption and reduced efficiency.
Choosing the right generator from the outset helps keep your project productive while controlling operating costs.
At Ideal Heat Solutions, we work closely with contractors across the UK to provide temporary generator hire that is correctly sized for each project’s requirements, ensuring reliable performance throughout every stage of construction.
Why Correct Generator Sizing Matters
Every construction project has different power requirements.
The generator you choose must be capable of supplying sufficient electricity for all equipment operating on site, while also allowing for changing demands as the project progresses.
Correct sizing helps you:
- Avoid costly downtime
- Improve fuel efficiency
- Reduce operating costs
- Prevent overloaded electrical systems
- Support safe site operations
- Maintain productivity throughout the project
Taking time to assess your power requirements before hiring a generator can prevent expensive problems later.
Start with a Complete Load Assessment
One of the most common mistakes when specifying temporary generators is overlooking smaller electrical loads.
While large items of plant are easy to identify, numerous smaller pieces of equipment can collectively have a significant impact on total power demand.
A comprehensive load assessment should include:
- Tower cranes
- Site hoists
- Welfare cabins
- Site offices
- Lighting towers
- Power tools
- Compressors
- Pumps
- Temporary heating equipment
- Drying equipment
- Battery charging stations
- Security systems
Considering every electrical load helps ensure your generator has sufficient capacity to support daily operations.
Construction Site Power Requirements Change Over Time
Power demand is rarely consistent throughout a construction programme.
Early stages of a project may require relatively modest electrical capacity, while later phases often involve multiple trades working simultaneously.
For example:
Groundworks
Power requirements are typically lower, focusing on welfare facilities, pumps and small equipment.
Structural Construction
Demand increases as cranes, hoists and larger plant become operational.
Internal Fit Out
Electrical usage often reaches its highest level as several trades work simultaneously using power tools, temporary heating and lighting.
Understanding how demand changes throughout the programme allows your temporary power solution to evolve alongside the project.
Flexible Generator Hire for Growing Projects
At Ideal Heat Solutions, we understand that construction projects don’t always remain static.
If your site’s power requirements increase during the build, we can help adjust your temporary power solution by:
- Supplying larger generators
- Adding additional generator capacity
- Supporting phased power requirements
- Advising on future site demand
This flexibility helps ensure your temporary power continues meeting site requirements without unnecessary disruption.
Key Factors When Choosing the Right Generator
Allow Capacity for Peak Demand
Generators should be sized for the highest anticipated simultaneous load rather than average daily consumption.
This provides sufficient headroom during busy working periods.
Consider Starting Loads
Equipment such as cranes, compressors and pumps often require significantly higher power during start up than during normal operation.
Accounting for these peak loads helps prevent voltage drops and equipment issues.
Fuel Capacity
Generator fuel tanks should be appropriate for your expected operating hours and planned refuelling schedule.
Careful planning helps reduce interruptions while improving site productivity.
Electrical Connections
Before delivery, it’s important to confirm that the generator’s connection type, distribution equipment and cabling are compatible with your site’s electrical infrastructure.
Our engineers can assist with this as part of the planning process.
Supporting Construction Projects Across the UK
Our temporary generator hire solutions support a wide variety of construction projects, including:
- Residential developments
- Commercial buildings
- Infrastructure projects
- Healthcare facilities
- Education projects
- Industrial developments
- Civil engineering works
- Public sector construction
Whether your project requires temporary power for several weeks or many months, we can provide reliable equipment supported by experienced engineers.
A Complete Generator Hire Service
At Ideal Heat Solutions, we provide a fully managed temporary power service that includes:
- Site surveys
- Generator sizing advice
- Delivery
- Installation and commissioning
- Fuel management
- Routine servicing
- Technical support
- Collection at the end of the hire period
Our team works alongside contractors and project managers to ensure temporary power is available when and where it’s needed.
Why Choose Ideal Heat Solutions?
With extensive experience supporting construction projects throughout the UK, we understand the challenges contractors face when planning temporary power.
Our specialists take the time to understand your project’s current requirements as well as anticipated future demand, helping you select the most efficient and cost effective generator for every stage of the build.
Whether you’re managing a small development or a large infrastructure project, we’re committed to delivering dependable generator hire backed by professional support.
Speak to Our Generator Hire Specialists
Choosing the right generator is about more than selecting a kVA rating. It requires understanding your equipment, project programme and future power requirements.
If you’re planning a construction project and need reliable temporary power, our team is here to help.
Contact Ideal Heat Solutions today with your equipment list and project programme. We’ll recommend the most suitable generator hire solution, ensuring your site has the right level of power from the first day of construction through to project completion.
Frequently Asked Questions
Can I upgrade to a larger generator during the project?
Yes. If your site’s power requirements increase, we can often provide a larger generator or additional capacity to support the next phase of construction.
Do you carry out site surveys before recommending a generator?
Yes. For larger or more complex projects, we can review your load schedule or visit the site to assess power requirements before recommending the appropriate generator.
What fuel options are available?
We provide diesel generator hire and can also arrange fuel supply and fuel management services to suit your site’s operating schedule and access requirements.
How do I know what size generator my construction site needs?
Our specialists assess your equipment list, electrical loads and project programme to recommend the most suitable generator capacity, ensuring reliable performance without unnecessary operating costs.
Can generator hire support long term construction projects?
Absolutely. We provide both short term and long term generator hire for construction projects across the UK, with ongoing maintenance, technical support and flexible hire periods to match your programme.