| CTCapstone Turbine CORP | Chatsworth | — | ◇ UNVERIFIED |
| CECarls Electric INC | El Monte | — | ◇ UNVERIFIED |
| CCarrier | Compton | — | ◇ UNVERIFIED |
| CFCasablanca Fan Company | Industry | — | ◇ UNVERIFIED |
| CMCasara Modern | Huntington Beach | — | ◇ UNVERIFIED |
| CLCasella Lighting CO | San Francisco | — | ◇ UNVERIFIED |
| CLCasual Lamps of California | Gardena | — | ◇ UNVERIFIED |
| CLCcl Label INC Dba Imprint Energy | Alameda | — | ◇ UNVERIFIED |
| CLCcsf-puc/street Lighting | San Francisco | — | ◇ UNVERIFIED |
| CTCcsf-puc Ti Warehouse | San Francisco | — | ◇ UNVERIFIED |
 C&d Technologies | Hayward | — | ◇ UNVERIFIED |
| CCCentral Californa Generator LLC | Escalon | — | ◇ UNVERIFIED |
| CTCentral Tire | Delano | — | ◇ UNVERIFIED |
| CTCentral Tool & Mfg INC Dba Dmc Diverdified Mfg CO | Fresno | — | ◇ UNVERIFIED |
| CVCentral Valley Collision Center | Fresno | — | ◇ UNVERIFIED |
| CICeradyne INC | Costa Mesa | — | ◇ UNVERIFIED |
| CCCerox Corporation | Santa Maria | — | ◇ UNVERIFIED |
| CKCervitor Kitchens INC | El Monte | — | ◇ UNVERIFIED |
| CEChicks Electric Motor Service | San Diego | — | ◇ UNVERIFIED |
| CEChico Electric | Maxwell | — | ◇ UNVERIFIED |
| CEChw Enterprises, INC | Visalia | — | ◇ UNVERIFIED |
| CLCirca Lighting | San Francisco | — | ◇ UNVERIFIED |
| CACircle Aw Products CO | Modesto | — | ◇ UNVERIFIED |
| CTCircle T Centerless INC. | Westminster | — | ◇ UNVERIFIED |
| CACity and County of San Francisco Puc | San Francisco | — | ◇ UNVERIFIED |
| CCCity & County of San Francisco | San Francisco | — | ◇ UNVERIFIED |
| COCity of Burbank-safety | Burbank | — | ◇ UNVERIFIED |
| COCity of Lompoc Electrical Div | Lompoc | — | ◇ UNVERIFIED |
| COCity of Mountain House | Mountain House | — | ◇ UNVERIFIED |
| COCity of Nevada City Wastewater Treatment Plant | Nevada City | — | ◇ UNVERIFIED |
| COCity of Riverside | Riverside | — | ◇ UNVERIFIED |
| COCity of Vernon - Leonis Sub | Vernon | — | ◇ UNVERIFIED |
| CLClarus Lighting | Sacramento | — | ◇ UNVERIFIED |
| CIClassic Illumination INC | Berkeley | — | ◇ UNVERIFIED |
| CFClean Freeze INC | San Leandro | — | ◇ UNVERIFIED |
| CIClearlight Infrared 2 Clearlight Saunas | Berkeley | — | ◇ UNVERIFIED |
| CECL Enterprises Inc. | North Hollywood | — | ◇ UNVERIFIED |
| CPCoachella Power Group, INC. | Coachella | — | ◇ UNVERIFIED |
| CDCoastal Defense Products INC | Placentia | — | ◇ UNVERIFIED |
| CICoastal Ignition & Controls | Ventura | — | ◇ UNVERIFIED |
| CTCoastline Transport INC | Fowler | — | ◇ UNVERIFIED |
| CCColeen & Company, LLC | Long Beach | — | ◇ UNVERIFIED |
| CLCole Lighting | South El Monte | — | ◇ UNVERIFIED |
| CECollicutt Energy Services | West Sacramento | — | ◇ UNVERIFIED |
| CECollins Electrical Company, INC | West Sacramento | — | ◇ UNVERIFIED |
| COComcast of California/colorado | Pleasanton | — | ◇ UNVERIFIED |
| COComcast of San Leandro INC | Hayward | — | ◇ UNVERIFIED |
| CCCommunity Church/elementary School | Pine Grove | — | ◇ UNVERIFIED |
| CDCommunity Development Commission of Mendocino County | Ukiah | — | ◇ UNVERIFIED |
| CIConbstruction Innovations LLC | Sacramento | — | ◇ UNVERIFIED |
