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power usage effectiveness

Maximize your PUE with FGC Construction’s best in class mechanical team.

Our core competency is the management of customer data center projects large and small. Whether it’s a building conversion project, UPS and Generator retrofit, or new data center site construction, we can appreciate the necessary customer service and communication required to translate your ideas into a successful project.

Mechanical systems are the main influence on good PUE and efficiency in your facility. An antiquated system operating at a low efficiency can be extremely costly to operate. A jump in mechanical efficiency in your facility can have a quick payback to the bottom line. Capitalizing a new system that increases PUE and overall efficiency is often the right financial decision. Our team can help you estimate both those efficiency gains, and provide a turn-key installation estimate for the overall project.

Important services we provide are:

  • Data Center HVAC Sizing and load assessment
  • System assessment to accommodate new data center hvac equipment
  • Location, permitting
  • Heat Load, PUE impact assessment, capacity, proximity, and airflow planning
  • Physical Delivery, Offload, Rigging, Setting, pads, location
  • Physical connections, Electrical, SNMP, Power in/out
  • Startup, Integration, and Commissioning

The focus on “PUE” or Power Usage Effectiveness has been around the last 15 years. It is the calculation of input power used in the facility vs. units used to produce/cool/transfer the power. Therefore, you can create a higher PUE by inefficiencies in distribution transformers within the facility, poor airflow and cooling methods, inefficient UPS and Battery Systems losing internal kW power, and general choices of technology during construction.

It is possible to target a PUE during the design phase of a data center. Understanding that the PUE is a direct relationship to operational costs later. A higher PUE will cost more on an annual basis to operate than a lower PUE. Investment in highly efficient mechanical systems upfront can save large amounts of operational dollars later. Choosing technologies such as cooling systems, UPS Systems, space layouts, containment, and distribution can all affect PUE.


There is a direct relationship between cost to build and rack density in a data center construction project. The more power and cooling packed into a specific area, the higher the cost to build. Data Center density on the basic is the quantity of kW in terms of server BTU you are stacking in rack areas, and how much cooling it takes in the square footage they utilize. However, the more efficiently you move hot air out and return it to cold air such as in higher density installations, the better your PUE is, and the lower your Operational Expenses (E) will be at your facility.

Please click through to learn more about density challenges and FGC Construction.

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  • FGC Construction installed an entire megawatt of UPS and generator upgrade to our 3d Printing facility. This holds our power stable and provides unlimited runtime. Much appreciated!

    Lee M.COO - Boston, MA
  • FGC Construction delivered 2.5MW of high density data center in the middle of Silicon Valley. City planning to utility negotiations. Very impressed!

    Tim S.CFO - Silicon Valley, CA

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