Equipment Insight -- Job site power
Industry experts weigh in on ways rental centers can cash in on portable power units.
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JOSH CIRILLO |
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It’s important to size the generator or BESS for the expected load. Too small of a unit will cause power issues and may damage the unit; too large of a unit can lead to wet stacking and very inefficient operation. |
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| For rental operations, reliable equipment means fewer returns and less time spent troubleshooting. It translates directly into more time in the field, increased customer satisfaction, and ultimately, more revenue. | |
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The Makinex Portable Power Box represents less downtime, greater operational flexibility and a strong alignment with the industry’s increasing focus on sustainability. |
Proper sizing essential for power success
Mobile generators are indispensable assets in industries ranging from construction and events to emergency response and disaster recovery.
However, the effectiveness and longevity of these generators depend heavily on properly sizing for the application to optimize proper heat management and reduced downtime.
Correctly sizing a mobile generator or genset properly is crucial to ensure it can handle the electrical load safely and efficiently. Sizing a generator is determining which model is appropriate based on the total power requirements needed at the site. If the generator is undersized for the application, the lack of available power can damage the generator and potentially limit the amount of equipment that can be used simultaneously.
However, if the generator is too large for the application, the lack of sufficient load will not meet the minimum load requirements and therefore not produce enough heat for the Tier 4 diesel engine to maintain a hot enough exhaust temperature. Over time, this creates a carbon build up and unburned fuel in the exhaust system, which is commonly referred to as wet stacking. Wet stacking reduces generator output, increases pollutions levels and can result in costly engine damage and failures that affect components like the EGR, injectors, turbocharger, pistons and valves. Other related issues include re-gen lockout and nuisance shutdowns and a potential need for an on-site load bank.
To address these challenges, mobile generator manufacturers have recognized the need for better load management to reduce service issues, prevent engine damage related to light loading and increase onsite dependability. Some manufacturers offer an installed internal and external supplemental mechanical or resistive loading system that automatically activates when the Tier 4 engine is underloaded. The supplemental load increases the engine’s internal temperature, which helps it reach the engine manufacturers minimum engine temperature requirement.
Typical loading systems engage when output is under 30 percent of its rated load and disengages when generator output reaches 75 to 80 percent. They also sense phase and voltage.
While these systems help prevent wet stacking, they often use a one-size-fits-all approach and may not optimize heat generation or fuel efficiency. Mechanical systems also require maintenance and are prone to fail over time. Because of these factors, there is an opportunity for increased optimization of the heat generated and the minimum load needed to achieve these results.
Wacker Neuson has developed a supplemental loading device designed to meet minimum engine requirements and prevent wet stacking. The internally installed Thermal Recovery Loading System (TRLS) will automatically apply load to the generator when low or no external load is detected.
The TRLS helps maintain the manufacturer’s recommended minimum engine operating temperature by using resistive coils to increase overall load. The resistive coils also heat coolant through the engine block, efficiently recovering thermal load and increasing internal temperature.
The system detects voltage (120 volts to 600 volts) and phase setting, so no operator input required. It pairs with a variable-speed fan to optimize cabinet temperature and maintain system efficiency. It’s a maintenance-free system that has no moving parts and is vibration-resistant. It is designed to match specific engine load requirements to minimize fuel consumption.
Proper sizing and loading of mobile generators is not just a technical consideration; it is a critical factor in ensuring operational efficiency and equipment longevity. When factoring in the cost of increased service issues, engine repairs and potential onsite failures, the use of supplemental load devices help the users benefit from reduced costs, improved reliability, and enhanced performance in all their power generation needs.
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ANNE NELSON |
Revolutionizing temporary power
The Powr2 Powrbank Max is helping industries around the world get more out of their energy through energy conservation and smart distribution. The Powrbank Max is a large-scale battery energy storage system (BESS) designed for temporary power applications and built for scalability. It delivers reliable, efficient power wherever it’s needed.
Whether supporting sustainable job site power or enabling critical infrastructure during grid outages, the Powrbank Max BESS is at the forefront of energy transition. Here are just a few examples of how the Powrbank Max is transforming temporary power for various industries globally:
Residential construction: During construction of a large housing development, the Powrbank Max provided quiet, off-grid power to both site operations and newly built homes awaiting grid connection. It bridged the energy gap while minimizing emissions and unwanted noise.
Aqueduct construction: At an aqueduct site, the Powrbank Max powered two critical compressors used in drilling operations. The system’s reliable performance demonstrated how battery storage can enhance temporary construction site power in remote and rugged conditions.
Marine construction: Mounted on a spud barge, the Powrbank Max powered pumps, pile drivers, compressors and HVAC systems. The use of a BESS eliminated the need for frequent refueling, underscoring its advantages as a clean diesel generator alternative for marine and remote operations.
Remote construction/tower crane power: On a remote desert job site, the Powrbank Max served as the primary energy source for a tower crane, office HVAC and site lighting. A backup generator ran just once daily to recharge the unit, offering a reliable and efficient temporary power solution.
Heavy and civil engineering construction: A heavy and civil engineering construction project used the Powrbank Max to provide efficient temporary construction site power. It supported critical operations during a major bridge and tunnel expansion. The system helped ensure efficient energy use throughout the project.
From marine applications to large infrastructure builds, the Powrbank Max BESS is reshaping how industries think about temporary power solutions. By offering a cleaner, quieter and more efficient diesel generator alternative, it’s helping reduce emissions, fuel dependency and operational costs.
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RYAN |
Phase flexibility possible
One standout feature of Echo Industrial Power Equipment (IPE) is its proprietary Simul-Phase technology. This allows customers to access single-phase and three-phase power simultaneously from a single generator with no external transformers required. It’s an advantage for customers juggling multiple prime power needs on the same job site and helps rental centers provide more versatile equipment without added logistics or cost of extra components.
Additionally, the equipment is designed to be easy to use. Echo IPE rental customers consistently say they can confidently send these generators to a wide variety of job sites without worry. The interface is clear and intuitive, with key components easily accessible for maintenance. Operating instructions are printed directly on the machine so even non-specialists can get the machines running quickly. It’s a reliable solution that delivers advanced capabilities and everyday practicality.
Rental customers are focused on three primary concerns when it comes to power equipment: safety, time and cost. Many end users aren’t technical experts, and if setup or maintenance is complicated, it creates headaches for the rental center and the customer. That’s why Echo IPE generators are engineered for intuitive, simple operation. From clear interfaces to on-unit instructions and easy-access components, their design reduces the risk of user error and speeds up deployment in the field.
Rising fuel and labor costs plus the burden of managing extra accessories like transformers can eat into rental center profitability. Echo IPE is built for fuel efficiency and dependability, helping rental businesses reduce the need for add-on rentals or frequent service calls.
When rental centers invest in new equipment, they need to be confident that it will generate quick returns. Echo IPE’s long-term reliability, lower total cost of ownership and broad job site flexibility all work in tandem to drive high utilization.
Echo IPE units are engineered for uptime with rugged, thoughtful construction and proven durability, backed by an experienced factory service organization. That means fewer maintenance-related returns and more time rented in the field. With Simul-Phase technology, each generator can support single-phase and three-phase applications simultaneously, eliminating the need to rent or manage additional equipment. Fewer components mean less setup, faster deployment and a better rental experience for end users.
All of this adds up to stronger ROI: less downtime, fewer service calls and more jobs each unit can support, all while simplifying operations for rental centers and their customers. •
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BEN HOUK |
Dependable power on demand
When it comes to portable power solutions, rental businesses need equipment that performs under pressure. Tsurumi Pump’s TPG Series generators are engineered with that goal in mind. Designed for maximum durability, the TPG Series exceeds rental business and job demands.
A notable feature of the TPG Series is its carbon monoxide (CO) sensor. This sensor monitors CO levels and automatically shuts off the generator if levels become dangerously high.
The TPG Series also features reduced noise output and oversized fuel tanks, allowing for extended operation without interruption. This is particularly valuable for remote job sites where continuous power is essential, but refueling may present challenges. The large fuel tank reduces downtime costs, making it a practical and efficient choice for users and rental businesses.
Each unit is powered for longevity by a reliable Honda engine. The TPG Series offers efficient fuel consumption with an oil alert system that turns off the motor if the oil falls below a safe operating level. Additionally, Tsurumi’s portable generators are designed to power the tools commonly used on construction and remediation sites.
Equipment reliability is a concern that rental companies face when selecting equipment, as downtime can lead to lost revenue. For rental operations, reliable equipment means fewer returns and less time spent troubleshooting. It translates directly into more time in the field, increased customer satisfaction, and ultimately, more revenue. By pairing Honda engines with Tsurumi products, the TPG Series delivers a high level of reliability that rental businesses can depend on.
When selecting power generation equipment, rental centers prioritize solutions that are dependable, easy to maintain and adapt to a wide range of end user needs. Tsurumi’s TPG Series is a versatile and worthwhile addition to any fleet.
Tsurumi’s nationwide dealer support and parts availability helps keep TPG units running and ready to rent. Tsurumi carries parts for a minimum of seven years after a model is retired, ensuring that rental centers can access the parts they need. Quick access to customer support and replacement parts reduces downtime and maximizes the lifespan of each unit, reinforcing ROI for rental businesses.
Backed by Tsurumi’s reputation for quality and service, the TPG Series generators provide rental centers with confidence that their investment will continue performing reliably in the field.
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BRANDY CARMONA |
Sustainable power solutions
In today’s world, where sustainability and environmental consciousness are at the forefront of many industries, the transition to electric power generation is key.
Makinex engineers continue to lead innovation in the rental industry, and the latest breakthrough is the Portable Power Box (PPB), a next-generation solution designed to meet the evolving needs of today’s portable power market.
The PPB is a quiet, clean, and safe power solution, purpose-built for maximum versatility across multiple industries and applications. With noise-free, fuel-free and emissions-free operation, it is ideally suited for any setting where traditional generators fall short, such as indoor environments, confined spaces, noise- or emission-regulated areas and more.
Charging is flexible and efficient, with compatibility for slow charging with 120-volt and fast charging via 240-volt power, as well as integration with solar photovoltaic (PV) systems.
Delivering up to 6kW of continuous power and equipped with a 15kWh battery capacity, the PPB empowers operators across construction sites, outdoor events, emergency response operations and beyond.
Built with durability and compact size in mind, maneuvering and storage are effortless, ensuring a long operational life and superior durability in demanding rental environments. The PPB charges overnight or in as little as four hours, enabling rapid turnaround times for rental centers and maximizing equipment utilization.
For rental centers and their customers, the Makinex Portable Power Box represents less downtime, greater operational flexibility and a strong alignment with the industry’s increasing focus on sustainability. With whisper-quiet performance and zero emissions, the PPB is not just an innovation, it’s the future of portable power.
Rental centers are always looking for solutions that are reliable, easy to maintain, environmentally responsible and versatile.
With the Portable Power Box, Makinex engineers have directly addressed these concerns. Unlike traditional generators, the PPB offers emission-free operation and quiet performance, making it suitable for a much broader range of work environments, including indoor or noise-sensitive areas.
Its compact size and portability solve major logistics challenges; it’s easy to transport and deploy wherever it’s needed. Furthermore, fast recharging in just four hours means rental centers can turn units around quickly, improving asset utilization and profitability.
The PPB offers a smart, modern solution that supports sustainability goals while still delivering industrial-grade performance.
Rental centers will find the Portable Power Box to be an incredibly smart investment. First, it’s future-proof — there’s growing demand across industries for renewable, low-emission solutions, and the PPB positions rental fleets to meet that demand head-on.
Second, with its quick recharge time and versatile-power output, it ensures minimal downtime and maximum rental availability, directly boosting ROI.
Its flexibility — from powering tools on construction sites to running sound systems at outdoor events — means a single unit can serve multiple rental markets, increasing fleet utilization.
Just as important, the low maintenance and zero fuel costs associated with a battery-powered system further improve the overall profitability over time.
This areicle originally appeared in the July-August 2025 issue of Pro Contractor Rentals mangazine. Urbain Communications LLC. All rights reserved.
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