Public Sector

In the US, GreenGen is an active partner with numerous public sector entities, including federal and municipal agencies.

US Government

In 2020, GreenGen was awarded an Indefinite Delivery/Indefinite Quantity (IDIQ) Energy Savings Performance Contracting (ESPC) Multiple Award Task Order Contract (MATOC) from the U.S. Army Corps of Engineers, Engineering and Support Center in Huntsville, Alabama. GreenGen is one of only four small businesses on-ramped to the $1.5 billion contract for the design, installation, and operation of energy savings projects to help military installations meet mandated energy savings goals. The IDIQ ESPC MATOC allows federal agencies to enter into partnerships with ESCOs to perform energy savings and facility improvements. By fronting capital costs, the contract allows the Army to prioritize projects that support readiness and focus on modernization and reform.

Since 2014, GreenGen has had a GSA Schedule 84 contract (Contract # GS-07F-143BA), which provides all federal agencies, as well as some state and local governments, with a vehicle to procure services from GreenGen on both a paid-for and performance-contract model. 

GreenGen’s Multiple Award Schedule 334512 is designated specifically for the GSA’s new and highly competitive ESPC ENABLE program. GreenGen is one of only 12 contractors in the US approved by the GSA under this schedule to support this program. In addition, GreenGen is on the US Department of Energy’s Qualified List of ESCOs.

The Federal Energy Management Program's (FEMP) Energy Savings Performance Contract (ESPC) ENABLE provides a standardized and streamlined process for federal facilities to install targeted, energy conservation measures (ECMs) in six months or less. Projects are administered through the General Services Administration (GSA) Federal Supply Schedule 84, MAS 334512 using a set of pre-established procurement and technical tools. The program allows sites an opportunity to implement specific ECMs including lighting, water, simple HVAC controls, HVAC system replacement, and solar photovoltaics.

ESPC ENABLE offers the same benefits as a conventional ESPC while at the same time, taking advantage of the GSA Schedule and its set of pre-qualified vendors and pre-negotiated pricing. This allows for a faster selection process so that a project can be designed and installed quickly. Other traditional ESPC benefits include:

  • Zero upfront capital costs to the agency
  • Guaranteed energy cost savings that exceed annual payment
  • Prescribed measurement and verification to ensure savings are achieved
  • Standard tools and contract templates to ensure consistency and project replication
  • Qualified energy service companies
  • Extensive project assistance and technical support from the Federal Energy Management Program (FEMP) experts to ensure success.

Through the ESPC ENABLE program, smaller Federal facilities now have the opportunity not only to upgrade their old equipment, but also to contribute to a number of sustainability initiatives and enhance their ability to fulfill their stated mission.

Recent examples of GreenGen’s projects in the public sector include:


GreenGen has won one-third of all the ENABLE Task Orders awarded to date.

  • GSA Region 7, Ft Worth, TX –GreenGen worked with GSA Region 7 to develop, finance, and implement energy conservation measures at their agency owned facilities secured through multi-year performance contracts. Solutions included retrofit interior and exterior fixtures with LED fixtures and Cypress wireless thermostats integrated into the BAS; and retrofit and installed controls on 10 split systems serving the Federal garage. 
  • GSA Ohio – GreenGen worked GSA to develop, finance, and implement ECMs in three buildings in Columbus and Dayton. Solutions included HVAC, HVAC controls, including a glycol cooling loop (replacing two CRAC units); RTU and split system equipment replacement; interior/exterior LED lighting upgrades, and recommission of Lighting Control System in the Rice Federal Building and US Courthouse.
  • GSA Michigan – GreenGen worked with GSA to develop, finance, and implement ECMs in 13 buildings throughout Saginaw, Flint, Ann Arbor, and Detroit secured through multi-year performance contracts. Solutions included HVAC, HVAC controls, and Variable Frequency Drives (VFDs) on cooling tower fans, overhaul/repair WS economizer and repair valves; indoor/outdoor lighting and controls at all locations; building envelope solar film at Saginaw; indoor and outdoor lighting.
  • Department of Homeland Security, CBP Yuma – GreenGen has completed the retrofit on the high security ten-mile border fence between the US and Mexico, developing an optimal LED fixture design to replace existing 1000w Metal Halide fixtures and retrofit the nearly 300 60-foot poles
  • US Department of Agriculture, US Forest Service Regions 5 & 6 – GreenGen is currently working with the US Department of Agriculture to implement a series of ESPCs under the ESPC ENABLE program to help reduce the energy costs for a portfolio of more than 450 buildings in US Forest Service Region 5 (Southern California) and Region 6 (Washington, Oregon, Idaho). This assignment was competitively secured under the GSA Schedule 84 SIN 246-53 (predecessor to the MAS 334512) contract and includes lighting, HVAC, HVAC controls and solar PV ECMs. GreenGen secured long-term financing; annual debt service payments will be secured through guaranteed energy savings. A $470,000 DOE AFFECT grant for Region 6 was secured to offset solar PV. In addition, GreenGen's work on USFS Region 5 won the 2018 Federal Green Challenge Award for Innovation.
  • GSA US Courthouse & Federal Building, Hammond, IN – GreenGen upgraded exterior lighting of a 55,000 ft2 green area and 83,000 ft2 of hardscape parking area, as well as upgrading lighting of the four courtrooms.
  • Department of Transportation, SLSDC – GreenGen performed an Investment Grade Audit of the Saint Lawrence Seaway Development Corporation in Massena, NY to assess the feasibility of an ESPC under ENABLE


  • U.S. Army Corps of Engineers, Engineering and Support Center in Huntsville, Alabama – GreenGen is one of only four small businesses on-ramped to the $1.5 billion IDIQ ESPC MATOC contract for the design, installation, and operation of energy savings projects to help military installations meet mandated energy savings goals.
  • Federal Bureau of Investigation – GreenGen has completed energy efficiency retrofits, upgrades and recommissioning on multiple leased FBI facilities. The scope of work has included lighting, mechanical systems, building envelope, controls, and behavior/data visualization.
  • Library of Congress – GreenGen retrofitted a secure facility used for storage and management of historic documents with LED fixtures with occupancy-based controls to limit interior fixture runtimes to when specific storage aisles were in use, reducing fixture wattage by 70%. Secured rebates and grants that covered 57.1% of project cost; Engineered photometrics with LOC and GSA for energy efficient LED upgrades and retrofitted 14 existing RTUs with controllers enabling power/output modulation with building demand, resulting in 44% energy reduction


  • City of Washington, DC – GreenGen has performed retrocommissioning work on behalf of the DC Department of General Services.
  • DC Water Authority – GreenGen has performed an energy assessment of DC Water’s portfolio of facilities, as well as provided submetering and energy efficiency work to select buildings.
  • State of Maryland – GreenGen is currently under contract to provide metering and data analytics to Maryland-based manufacturers in support of the State’s goal of making industry more competitive. GreenGen is under contract to perform energy assessments, develop energy efficiency recommendations, present energy assessment reports to clients, identify available rebates, and prepare a financial analysis (including Life Cycle Cost analysis, cash flows and simple payback scenarios) for the recommended implementation.

South America

  • City of Montevideo, Uruguay – GreenGen designed and implemented a submetering and data analytics program for the City of Montevideo, Uruguay. This program included the assessment of a dozen public facilities and the implementation of submeters. Each building’s data was placed on a web-based portal to provide city officials and engineers access to consumption data, allowing them to make significant reductions based on changes to equipment, schedules, and controls. The project was financed by the Inter-American Development Bank.


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