| Administrative Controls Management, Inc. |
Advanced Power |
| Aerial Hydraulic Repair, Inc. |
Altec Industries, Inc. |
| American Energy Services, Inc. |
| AZCO Inc |
Baker Tilly |
| Barr Engineering Co. |
Barton Malow |
| Ben F. Thomas Sales Co. |
Bitlyft |
| Black & Veatch |
Border States |
| Century A&E |
The Christman Company |
| CityInsight |
Clarke Energy |
| Collaborative Learning |
Contract Land Staff |
| Commonwealth Associates, Inc. |
CPV Mason Road |
| Crossroads Mobile Maintenance |
CSI Utility Sales |
| CTC Engineering |
Dickinson Wright PLC |
| Dig-It, Inc. |
Eaton: Cooper Power Systems |
| Electrical Resources Company |
ELUS Company |
| Emerald Transformer |
Farabee Mechanical, Inc. |
| Firmatek |
Fishbeck |
| Franklin Energy Services LLC |
Fujitsu Network Communications |
| GAR-NET Associates |
GDS Associates |
| Genics Inc. |
Granger Construction Company |
| GRP Engineering, Inc. |
HDR |
| HEK Inc |
Hydaker-Wheatlake Company |
| Irby Utilities |
Jennings Strouss & Salmon, PLC |
| Juhl Energy, Inc. |
Karoub Associates |
| Kent Power, Inc. |
Kiewit Engineering Group Inc. |
| KW Associates |
Lawson-Fisher Associates, P.C. |
| Marshall Energy Center |
MC Power Companies |
| Megger |
Michigan Cat |
| Michigan Electric Cooperative Association |
Midwest Utility Sales |
| Milwaukee Tool |
Miron Construction |
| Mitsubishi Hitachi Power Systems |
MJ Electric, LLC |
| mPower Innovations |
Nelson Tree Service, Inc. |
| NESCO Specialty Rentals |
Newkirk Electric Associates |
| Nighthawk |
Nokia |
| NTH Consultants, LTD |
Okonite Company |
| Origis Energy USA |
Osmose Utilities Services, Inc. |
| Power Line Supply |
PowerLink Electrical Sales |
| Power System Engineering, Inc. |
Premier Power Maintenance Corporation |
| Renewable World Energies, LLC |
RESCO |
| S & C Electric Co. |
Sargent & Lundy |
| Sawvel and Associates |
Sensus |
| Somes-Nick & Co. |
Spectrum Engineering Corporation |
| The SPE Group |
Spiegel & McDiarmid, LLP |
| SSOE Group |
Sunbelt Solomon Solutions |
| T&R Electric Supply Company |
Tech Products, INC. |
| Terex USA |
Theka Associates Engineering, Inc. |
| Total Electric Power Sales, Inc. |
Utilities Instrumentation Service |
| Utility Consulting Group, LLC |
Utility Financial Solutions |
| Utility Sales and Service |
Varnum Law Firm |
| Versalift Midwest, LLC |
Wartsila North America |
| Woodlyn Sales |
W.W. Williams |
