protection and control

Asplundh Engineering Services (AES) provides engineering, design, planning and field services for the utility industry, including power generation, transmission and distribution infrastructure. AES serves investor-owned, municipal and cooperative utilities, large power users, government, general contractors, industrial commercial and developers, renewable energy developers and EPC firms. It is an Asplundh company backed by more than 100 years of experience.

CAD and GIS designconstruction managementdistribution engineeringEngineering design and planningengineering procurement and constructionGas pipeline engineeringPower system analysisproject managementSubstation EngineeringTesting and commissioningtransmission line design

Expanse Electrical provides integrated electrical infrastructure, instrumentation and automation system solutions for process-driven assets across the U.S., including design, installation, integration, testing, start-up and maintenance of electrical power distribution and control systems. The company cites 70+ years of electrical, power and automation expertise and operates with core values of GRIT, reciprocity, innovation and trust.

civil and structural engineeringconstruction, installation, testing and startupcontrol system integrationcontrol system migration/modernizationfiber-opticsHMI designindustrial network designMV drive packagingPLC programmingpower transformer oil processing, inspection, maintenance and repairSCADA hostingsubstation design and engineeringsystem integrationUL control panel manufacturing

Kewo Engineering Corporation is a certified small business in Diamond Bar, California that designs and reviews electrical and civil systems for substations, transmission, protection, battery storage and EV charging. Founded in 2014 by Brian Kewo, P.E., the firm serves Southern California utilities, ports, transit agencies and cities, working directly for public agencies and as a subconsultant to large engineering firms.

AC/DC load studiesarc flash studiescivil and structural foundations designcommissioning supportconstruction managementgrounding studiesOT cybersecurityphotometric studiesprotection coordinationQA/QC reviewshort circuit studiessubstation designtrainingtransmission and distribution line design