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Greffen Systems was created to bring innovative, new “Green” technologies into the United States. With products like the M2G Advanced Load Monitoring Controller, Greffen has become best practices at a number of U.S. organizations spanning every geographic and climatic area.


Alabama A&M
Atria West – Los Angeles
Austin ISD
Baylor Medical Center
Bell Helicopter
Berry Center
Bi-State Metro
Boston College
Brooks City Base
Cabrini High School
Carolinas Health Care
Cleveland Clinic
College of Charleston
Commerce Bank – St. Louis
Craig County Schools - VA
Cypress Fairbanks Schools
Donaldson Corporation
Dow Chemical
El Paso ISD
Elon University
Electronic Arts
EPA Duluth Minnesota
Fauquier County Schools
Flat Rock Schools

Ford Motor Company
Fort Bragg
Fort Jackson
Fort Campbell
Fulton County Jail
Goose Creek ISD
General Motors
Georgia Building Authority
Georgia Institute of Technology
Guardian Industries
Guilford Schools
Hewlett Packard
Internal Revenue Service
Iron Mountain
Jackson Correctional Facility
Kaiser Permanente
JPMorgan Chase
Lapeer Correctional Center
L3 Communications
Lara Academy
Lenox Center
Life Technologies
Lincoln Harris
Lincoln Properties
Lockheed Martin

Loyola University
MacDill Air Force Base
Mancelona Schools
Marist Schools
Mecklenburg Court House
Michigan Lapeer Correctional Facility
Michigan State University
Middle Georgia State
Middle Tennessee State
Mound Road Correctional Center
New Brookside Apartments
Northwest ISD – Gene Pike
Orchard Lake Saint Marys'
Palm Terrace – Orange County
Pilgrim Manor Nursing Home
Reid House
Richland College
Richland County Schools
Rutherford County Detention Center
Rutherford County Schools

Selfridge Air National Guard Base
South Carolina Dept. of Corrections
South Carolina Dept. of Admin
South Windsor Schools
Sovereign Partners
State Of Tennessee
State Street Bank
State University of New York
Stratton Air National Guard Base
Sysco Foods
Tennessee Dept. of Corrections
Union Bank
University of Georgia
UNC Charlotte
United Auto Workers
University of North Carolina
University of North Texas
University of South Carolina
University of Texas Dallas
U.S. Bank
Vanguard University
Waterford Public Schools
Wells Fargo
Worthington Community Center

Greffen has worked very diligently to introduce and prove our products with corporations, large facility management organizations as well as utilities and government agencies.


Our products have been installed in every geographic and climatic area of the United States.

A number of utilities including National Grid, Detroit Edison, Consumers Energy, Laclede gas, Missouri Gas and many others now offer substantial rebates on Greffen’s products. Where required, Greffen offers full installation, training and support and is recognized for extremely high levels of customer satisfaction across their U.S. customer base.

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