GREENER POWER

THE SOLUTION

One of the top electrical contractors in Texas was challenged by their GC to go greener with their onsite job trailers. The contractor turned to HOLT Industrial rentals after a previous attempt at fulfilling the need had proven inconsistent for the customer.

After testing the power needs of the 5-trailer setup, our team concluded a hybrid solution of a diesel power generator — for instant, anytime power — coupled with a battery energy storage system — for optimizing power storage and long term usage — would provide a greener solution without sacrificing reliability.

The rental package included a Cat® XQ230 diesel generator, HOLT Industrial Rentals 250-575 Battery Energy Storage System (BESS), step down transformer and cables. This solution has resulted in a better than 4:1 run ratio, with the generator running only four hours in a 24 hour time frame.

Comparing the original set-up to the new hybrid generator/battery set-up, the customer saw monthly savings of 150+ gallons of fuel and generator runtime decreasing from 48 hours down to 12 hours. We are also able to load the generator to a better load profile to prevent instances of wet stacking and regen issues.

Although deployed in this case for a long term job site solution, BESS set-ups (whether island or hybrid) are also ideal for short-term power needs like expected power outages, short-term projects, or special events. These scalable power solutions are not only instantly available but also align with green energy goals by reducing reliance on fossil fuels.

A. 

B. 

The generator without the battery (image A.) shows fluctuating KW and operates at a low load, which is not ideal for tier 4 engines as it can lead to shutdown faults over time. While a smaller generator could be used, the customer plans to add more load, necessitating frequent generator changes. In contrast, the generator with the battery (image B.) demonstrates a more stable load profile, allowing for full loading, which is better for both the engine and the generator overall.