Heale Manufacturing CO LLC | Waukesha | — | ● ACTIVE |
Advanced Ionics, INC | New Berlin | 20–99 | ● ACTIVE |
Generac Power Systems, INC. | Waukesha | — | ● ACTIVE |
Archangel Device LLC | Waukesha | — | ● ACTIVE |
Pa Electronics CORP | Hartland | — | ● ACTIVE |
Renewable Energy & Drives US LLC | New Berlin | — | ● ACTIVE |
Schunk Carbon Technology, LLC | Menomonee Falls | — | ● ACTIVE |
Universal Real Time Power Conversion LLC | New Berlin | — | ● ACTIVE |
Generac Power Systems INC - Eagle | Eagle | — | ◐ LIKELY ACTIVE |
| CPCooper Power Systems LLC | Waukesha | — | ◇ UNVERIFIED |
| CPCooper Power Systems-transformer Product | Waukesha | — | ◇ UNVERIFIED |
| SCSchunk Carbon Technology LLC | Menomonee Falls | — | ◇ UNVERIFIED |
| AIAbb INC. | New Berlin | — | ◐ LIKELY ACTIVE |
| DNDrs Naval Power Systems INC | Menomonee Falls | — | ◐ LIKELY ACTIVE |
| LCLovejoy Controls Corporation | Waukesha | — | ◐ LIKELY ACTIVE |
The Gund Company, INC. | Waukesha | — | ▲ REPORTED CLOSED |
| STSpx Transformer Solutions INC | Waukesha | — | ◇ UNVERIFIED |
| ANABB New Berlin- 18250 W Lincoln Ave | New Berlin | 100–499 | ◐ LIKELY ACTIVE |
| ASAmerican Superconductor Corporation - Wisconsin | Pewaukee | 1–19 | ◐ LIKELY ACTIVE |
| BEBevco Engineering | Sussex | 20–99 | ◐ LIKELY ACTIVE |
| CPCooper Power Systems, LLC | Waukesha | — | ◐ LIKELY ACTIVE |
| ESEngineering Specialists, Inc. | Brookfield | 100–499 | ◐ LIKELY ACTIVE |
| IEIMS Engineered Products - New Berlin | New Berlin | 20–99 | ◐ LIKELY ACTIVE |
| IAITW Appliance Components | New Berlin | 20–99 | ◐ LIKELY ACTIVE |
| MFMenomonee Falls Technical Center | Menomonee Falls | 100–499 | ◐ LIKELY ACTIVE |
| MGMes Group, LLC | Brookfield | — | ◐ LIKELY ACTIVE |
| NBNew Berlin - 16250 W Glendale Drive | New Berlin | 100–499 | ◐ LIKELY ACTIVE |
| OAOlb Associates LLC | Delafield | — | ◐ LIKELY ACTIVE |
| PWProlec-GE Waukesha, Inc. | Waukesha | 500+ | ◐ LIKELY ACTIVE |
| PWProlec-ge Waukesha, INC. | Waukesha | — | ◐ LIKELY ACTIVE |
| TWTrystar Waukesha | Waukesha | 20–99 | ◐ LIKELY ACTIVE |
| WMWaukesha Manufacturing Lincoln Avenue | Waukesha | 100–499 | ◐ LIKELY ACTIVE |
| WMWaukesha Manufacturing Plant | Waukesha | 500+ | ◐ LIKELY ACTIVE |
| AAABL Automation Inc. | New Berlin | — | ◇ UNVERIFIED |
| ASAmerican Superconductor Corporation | New Berlin | — | ◇ UNVERIFIED |
| BGBaldor Generators | Mukwonago | — | ◇ UNVERIFIED |
| BHBentley Holdings, LLC | Waukesha | — | ◇ UNVERIFIED |
| EEEnsync Energy Systems | Menomonee Falls | — | ◇ UNVERIFIED |
| FAFormer Abb INC | New Berlin | — | ◇ UNVERIFIED |
| ILIntrigue Lighting, LLC | Menomonee Falls | — | ◇ UNVERIFIED |
| MIMacromatic Industrial Controls, INC. | Waukesha | — | ◇ UNVERIFIED |
| MCMte Corporation | Menomonee Falls | — | ◇ UNVERIFIED |
| PWProlec-ge Waukesha, INC. (prog Ii) | Waukesha | — | ◇ UNVERIFIED |
| SBStorage Battery Systems INC | Menomonee Falls | — | ◇ UNVERIFIED |
| SMSussex Manufacturing | Sussex | — | ◇ UNVERIFIED |
| TTTlx Technologies, LLC | Waukesha | — | ◇ UNVERIFIED |
| TLTpgw, LLC | Brookfield | — | ◇ UNVERIFIED |