Use Case

Comprehensive Energy Overhaul for GSA and FBI

We were able to reduce energy cost and consumption by 20%. The annual energy savings exceeded $90,000.

Asset Facts

Date Built 2004

Square Feet 142,002

Asset Type Offices, Flex Space

Project Facts

Annual Energy Savings 866,921 kWh

Annual Cost Savings $92,092

Gross Investment $294,063

Rebates $105,699

Rebates as & of Total Project Cost 36

Net Investment $188,365

Net Payback 2.05 years

ROI: 49%

Public Sector – Lighting – HVAC – Envelope – BMS

Energy Savings 19%

Whole building energy cost and consumption reduced by 20%

Energy usage reduced by over 860,000 kWh per year

Annual energy savings exceed $90,000.


fbi baltimore stats

Millions of kWh Annually

Annual Electricity Consumption


Built in 2004, this 150,000 ft² office building in the mid-Atlantic United States had operating and client comfort issues arising from inefficiencies in the HVAC, building envelope, and lighting systems.

  • A large atrium in the lobby and core of the building had significant solar heat gain during the summer, and the annex with 25-foot ceilings had a high level of temperature stratification during the winter

  • HVAC system ran beyond standard operating requirements

  • Light levels in tenant space were on average 36% above the IESNA and lease requirements

  • This secure facility required that our personnel be escorted, thus limiting installations to set operating hours.

Our Solution

Implemented energy efficiency retrofit measures, addressing multiple building systems, including HVAC, lighting, building envelope, advanced controls, and operations:

  • Installed high-output and high-efficiency lighting fixtures and controls

  • Introduced destratification fans in the annex, triggered by outside air temperature

  • Applied low-e solar film to lobby and atrium, reducing solar heat gain and UV ray damage

  • Implemented data visualization system, displaying real-time energy consumption.

Optimized HVAC operations by adding a building management system (BMS) overlay, controlling system components by taking into consideration:

  • Time of day usage charges

  • Peak demand

  • Historical building operations and consumption

  • Future weather conditions.