 S&c Electric Company | West Palm Beach | FL | — | ◇ UNVERIFIED |
| SESchumacher Electric CORP | Hoopeston | IL | — | ◇ UNVERIFIED |
| SCSfeg CORP | Fairview | TN | — | ◇ UNVERIFIED |
| SLShape LLC | Addison | IL | — | ◇ UNVERIFIED |
| SWShiloh Wind Power Plant | Suisun City | CA | — | ◇ UNVERIFIED |
| SESiemens Energy, INC | Manteca | CA | — | ◇ UNVERIFIED |
| SCSolomon CORP. - Solomon | Solomon | KS | — | ◇ UNVERIFIED |
| STSolomon Transformers, LLC | Prairie Du Chien | WI | — | ◇ UNVERIFIED |
| STSpark Thermionics INC | Berkeley | CA | — | ◇ UNVERIFIED |
| SMSpecialty Magnetics, LLC | Macedonia | OH | — | ◇ UNVERIFIED |
| SCSpx Corporation-waukesha Elect | Milpitas | CA | — | ◇ UNVERIFIED |
| STSpx Transformer Solutions | Dudley | NC | — | ◇ UNVERIFIED |
| STSpx Transformer Solutions, INC. | Kenner | LA | — | ◇ UNVERIFIED |
| SWStrauss Wind, LLC | Lompoc | CA | — | ◇ UNVERIFIED |
| SSSubstation #157 (fulton Street) | Washington | DC | — | ◇ UNVERIFIED |
| SSSunbelt Solomon Services--elba | Elba | AL | — | ◇ UNVERIFIED |
| STSunbelt Transformer | Bakersfield | CA | — | ◇ UNVERIFIED |
| STSunbelt Transformer | Temple | TX | — | ◇ UNVERIFIED |
| STSunbelt Transformer LLC | Bakersfield | CA | — | ◇ UNVERIFIED |
| STSunbelt Transformer, LLC | Bakersfield | CA | — | ◇ UNVERIFIED |
| STSunbelt Transformer LTD | Pompano Beach | FL | — | ◇ UNVERIFIED |
| SSunoco #0261-8767 | Allison Park | PA | — | ◇ UNVERIFIED |
| SISyndevco INC | Southfield | MI | — | ◇ UNVERIFIED |
| SPSynergy Power Group, LLC Dba Team Fenex | Sandoval | IL | — | ◇ UNVERIFIED |
| TDT & D Power, INC | Tooele | UT | — | ◇ UNVERIFIED |
| TITechnology INC. | Herndon | VA | — | ◇ UNVERIFIED |
| TETeledyne Electronic Safety Products | Northridge | CA | — | ◇ UNVERIFIED |
| TPTellus Power Green | Foothill Ranch | CA | — | ◇ UNVERIFIED |
| TTesla-energy | Santa Ana | CA | — | ◇ UNVERIFIED |
| TWThe Winsdor | Walnut Creek | CA | — | ◇ UNVERIFIED |
| TBThomas & Betts Elastamold CORP. | Hackettstown | NJ | — | ◇ UNVERIFIED |
| TLTpgw, LLC | Brookfield | WI | — | ◇ UNVERIFIED |
| TBTrans Bay Cable LLC | Pittsburg | CA | — | ◇ UNVERIFIED |
| TDTransformer Decommissioning INC D/b/a Emerald Transformer | Nabb | IN | — | ◇ UNVERIFIED |
| TDTransformer Division Bastrop Facility | Bastrop | TX | — | ◇ UNVERIFIED |
| TMTransformer Maintenance and Service, INC. | Maxton | NC | — | ◇ UNVERIFIED |
| TMTransformer Mfg INC | Norridge | IL | — | ◇ UNVERIFIED |
| TSTransformer Salvage Incorporated | Dudley | NC | — | ◇ UNVERIFIED |
| TOTt Office Jv LLC | Milpitas | CA | — | ◇ UNVERIFIED |
| TETucson Electric Power Company | Springerville | AZ | — | ◇ UNVERIFIED |
| UFUS Fabrication & Design | Farmington | MI | — | ◇ UNVERIFIED |
| VHVaisala Hbu | Sunnyvale | CA | — | ◇ UNVERIFIED |
| VIVantran Industries | Waco | TX | — | ◇ UNVERIFIED |
| VIVantran Industries LLC | Woodway | TX | — | ◇ UNVERIFIED |
| VSVector Systems, Inc | Bonham | TX | — | ◇ UNVERIFIED |
| VPVersatile Processing Group | Nabb | IN | — | ◇ UNVERIFIED |
| VTVf Transformer | Elgin | IL | — | ◇ UNVERIFIED |
| VTVirginia Transformer CORP. | San Jose | CA | — | ◇ UNVERIFIED |
| VTVirginia Transformer Corporation | Troutville | VA | — | ◇ UNVERIFIED |
| VTVirginia Transformer Corporation Universal - Pocatello Facility | Pocatello | ID | — | ◇ UNVERIFIED |
