Power Generation

Inglett & Stubbs has completed the design and installation of hundreds of megawatts of prime and standby power plants for industrial, healthcare, military and mission critical facilities. We have the capabilities to design, coordinate, install and maintain all of our power generation projects. Inglett & Stubbs has utilized parallel diesel generators as well as turbine prime mover generators to achieve maximum power availability for the lowest installation cost. In our power generation systems, we work with industry leaders to provide the most efficient equipment and dependable fuel systems for your mission critical facility. Our goal is to guarantee uninterrupted power for your critical systems, 24/7/365.

Power generation installations include:

  • Prime Power Turbine/Electric Generators
  • High Speed Diesel
  • Distributed Generation (Peak Shaving) Installations
  • Medium Voltage Installations
  • Utility Dispersed Generation Power Plants
  • Paralleling Switchgear & Controls
  • Grid & Distribution Systems

Some examples of our power generation facilities include:

QTS Metro Data Center

Mission Critical Data Center Standby Power Plant
The QTS Metro data center is located in the heart of Atlanta, GA. The facility encompasses 970,000 ft2 with a data center footprint of nearly 531,000 ft2, including over 323,000 ft2 of raised floor. A 115 kV, 120 MVA on-site utility substation serves this facility with three 40 MVA, 13.8kV secondary transformers. The system supports six 2,750 ton centrifugal water chillers and 40.5 MW of uninterruptible power supply systems. A 78 MW standby diesel electric generator plant was designed and installed with closed transition transfer capabilities to support all facility loads.

Singing River Hospital

Utility Dispersed Generation Power Plant
The Singing River Hospital in Pascagoula, Mississippi needed a higher capacity emergency power plant but could not interrupt their existing operations during an upgrade. The Inglett & Stubbs solution required intercepting and inserting a new standby/peak sharing power plant in the 24 kV primary utility lines serving the entire complex. With the assistance of Mississippi Power and the Southern Company, two 2MW generators, step-up transformers and a paralleling switchgear system were remotely installed. Once the new plant was fully tested and commissioned, Inglett & Stubbs used the hospital’s existing generators to support the emergency loads in the facility during the 3 hour cutover process.

The self-contained, remotely controlled power plant can operate in parallel with the utility or can be isolated from the grid to support hospital operations. The new plant can be remotely dispatched by the Mississippi Power to “peak shave” during high demand periods, thus saving the community hospital thousands of dollars a year. The rapid start-up and paralleling capabilities of this new emergency plant allowed removal of the older generators at the hospital, providing space for additional facility upgrades. The hospital also remotely starts the plant when violent Gulf storms or hurricanes are approaching, insuring uninterrupted emergency services to the community.

Georgia Dome

Distributed Generation and Peak Sharing Installation
Georgia Power, the Atlanta local utility, had been searching for ways to off-set peak kW demands, especially during the warm summer months. From this need, they implemented the Supplemental Generation (SG) Program. This allowed owners of emergency generators to run their units in parallel with the utility grid to help reduce the overall utility load. In return, the generator owners received free generator maintenance, free fuel and significant rebates on their power bills. The Georgia Dome subscribed to this program and allowed Inglett & Stubbs to install the remotely dispatched, automatic paralleling switchgear and controls for the system. Working in conjunction with Prime Power, Inc., Inglett & Stubbs successfully installed the controls on each of the 480V generators, allowing the customer to save significantly on utility and generator maintenance costs.

Hayes Prison

Emergency Power and Peak Sharing Power Plant
With modifications provided by Inglett & Stubbs and Prime Power, Inc, Hayes Regional State Prison was also able utilize their existing standby generator system with the Georgia Power SG Program. The generators can be remotely dispatched by Georgia Power to operate in parallel with the utility to offset peak kW demands on their local distribution grid near Rome, GA. Working in a high security prison was a challenge but the results were impressive. The Georgia Department of Corrections saved thousands of dollars in generator maintenance, fuel and utility bills by participating in this program.

Atlanta Federal Center

Emergency Standby Power Plant
The Atlanta Federal Center houses over 5,000 employees and dozens of federal agencies. The complex contains a large multi-function emergency/standby generator plant to support the many critical functions in this high-rise office complex. Inglett & Stubbs installed the electrical distribution system for this complex, which included an automatic ISO, Inc. generator load sharing and paralleling switchgear system. This gave the Federal Center the capability to operate their plant for emergency standby power, or to remotely dispatch their plant for peak sharing with Georgia Power under their SG program. Peak sharing operation under full load takes the place of the normal periodic preventive maintenance testing while saving the government thousands of dollars in generator maintenance and fuel cost.

CDC Central Plant

Campus wide Emergency Power and Standby Power
In 1996 the Centers for Disease Control and Prevention (CDC) outgrew their existing standby generator plant at the Roybal Campus. A new 12 MW, 4.16 kV standby generator plant and utility service entrance was designed with the capacity to automatically pick-up the entire CDC Campus should utility power fail. However, installation of the new power plant could not interrupt any on-going and critical research activities at the Campus. Inglett & Stubbs and Prime Power, Inc. installed new fully automated switchgear and control systems along with six Caterpillar 3516 diesel powered generators. The new plant allowed for closed transition transfer capabilities and parallel operation with the utility for kW demand reduction. The entire plant was fully commissioned prior to cutover and the old power plant was demolished to make way for a new central chilled water and boiler plant. Inglett & Stubbs also participated in the 2002 CDC Central Utility Plant upgrade to support their major campus expansion, which continues today.

Kimberly Clark Research Campus

Temporary Peak Sharing Power Plant
Inglett & Stubbs installed a temporary peak sharing power plant at the 12.47 kV service entrance to the Kimberly-Clark Research Campus located in Rowell Georgia. This was done to reduce their annual peak kW demand, which allowed them to set a new base-line to determine their utility rate. Three 2MW standby generators were installed with utility paralleling and load sharing capabilities. The plant was installed in a remote corner of the campus to reduce noise impact on operations. Remote start-up capabilities were provided with the system to allow to the utility to “peak shave” during the heavy load of the summer months.