Business Details
45 Years
experience
Expert Electrical Engineering Services in San Antonio
Founded in 1981, Grubb Engineering has built a reputation as a trusted leader in electrical power systems design, commissioning, and maintenance. With over four decades of experience serving water/wastewater plants, electric utility facilities, and large industrial clients, we combine advanced computer studies with hands-on technical expertise to deliver safe, reliable solutions. Our team of licensed engineers, NETA-certified technicians, and project management professionals adheres to the highest industry standards, maintaining Full Member status with the International Electrical Testing Association. We specialize in power system analysis, equipment testing, and SCADA design while providing tailored engineering services for both new infrastructure and facility upgrades.Our commitment to continuous improvement is reflected in our adoption of cutting-edge technologies like thermal infrared scanning and partial discharge testing. Backed by extensive project experience across Texas, national, and international markets, we maintain rigorous quality control through documented processes and certified professional oversight. Our collaborative approach ensures clients receive technically sound solutions that prioritize operational efficiency and regulatory compliance. This enduring focus on technical excellence and client partnership has sustained our growth since incorporation in the State of Texas.
Services
Electrical System Design
Power System Testing
Transformer Testing
SCADA Design
Arc Flash Analysis
Thermal Infrared Scanning
Substation Engineering
Cable Fault Detection
Protective Relay Testing
Ground System Evaluation
Details
- Year established: 1981
Highlights and features
- We offer 40+ years of specialized electrical engineering experience with critical infrastructure
- Our team includes NETA-certified technicians and Texas-licensed professional engineers
- We maintain Full Member status with the International Electrical Testing Association
- We implement patented testing methodologies for power system reliability assessment
- Our engineers hold PMP certification for rigorous project management standards
Associations and certifications
- International Electrical Testing Association
Services
Electrical System Design
Our electrical system design services cover commercial, industrial, and utility projects from 120V to 4160V+ systems. We specialize in creating customized solutions for new installations and facility upgrades while ensuring compliance with national electrical standards. Our engineers utilize advanced software tools to develop comprehensive designs for substations, transmission lines, and distribution networks that optimize system reliability and efficiency.
Power System Testing
We conduct comprehensive power system testing including short circuit analysis, protective device coordination, and arc flash hazard assessments. Our certified technicians use state-of-the-art equipment to validate system performance parameters and ensure compliance with NFPA 70E and NEC requirements. These studies help identify potential risks and optimize protective device settings for enhanced personnel safety and equipment protection.
SCADA Design
Our SCADA design capabilities include complete control system architecture development for water/wastewater facilities and industrial plants. We design integrated monitoring and control solutions that incorporate instrumentation, programmable logic controllers, and communication systems. These implementations improve operational efficiency through real-time data acquisition and remote equipment management for critical infrastructure applications.
Transformer Testing
We provide specialized transformer testing services using both conventional and advanced diagnostic methods. Our NETA-certified technicians perform power factor testing, partial discharge analysis, and oil/gas diagnostics on energized equipment. These non-invasive assessments identify potential insulation degradation and other failure indicators while minimizing facility downtime through condition-based maintenance approaches.
Thermal Infrared Scanning
Our thermal imaging services use FLIR-certified equipment to detect abnormal temperature patterns in electrical systems. This non-destructive testing method identifies loose connections, overloaded circuits, and failing components before they cause equipment failures. We provide detailed reports with thermal imagery and repair recommendations to enhance system reliability and reduce unplanned outages.
People
Robert D. Grubb, Jr.
President and Electrical Test Technician IV
Leading technical services since 1992, Robert oversees testing operations and client support. He specializes in electrical system testing and has developed training programs for switchgear maintenance and safety protocols.
Steven Mouser, P.E.
Engineering Manager
As PE-licensed engineering manager, Steven directs design projects since 2004. He specializes in electrical systems for water/wastewater facilities and has extensive experience with storage tanks and pumping stations.
Devin Castillo
Electrical Test Technician II
Devin manages testing operations with NETA Level II certification and thermography expertise. A former Navy nuclear electrician, he specializes in electrical system studies and field service management.
Robert D. Grubb, P.E.
Founder Principal Engineer
Founder and principal engineer since 1981, Robert brings 50+ years of electrical engineering experience. He previously served as Chief System Protection Engineer for CPS Energy and authors technical papers on power systems.
Joy L. Grubb
Past President
As sole owner since 1992, Joy managed company growth while serving as CFO and HR Director. Her financial leadership enables technical teams to focus on delivering high-quality engineering solutions.
Questions
What industries does Grubb Engineering serve?
We specialize in water/wastewater facilities, electric utilities, and industrial infrastructure projects across Texas and beyond.
Are your technicians certified?
Yes, our team includes NETA-certified technicians, licensed professional engineers, and PMP-certified project managers.
What testing services do you offer?
We provide comprehensive power system testing including transformer analysis, cable testing, switchgear evaluation, and arc flash studies.
Can you help with regulatory compliance?
We ensure all testing and documentation meets NFPA 70E, NEC, and other applicable electrical safety standards.
Do you handle both design and implementation?
Yes, we offer complete engineering services from initial design through system commissioning and ongoing maintenance.
How do you handle emergency situations?
While we don't provide 24/7 emergency services, we prioritize scheduled maintenance to prevent critical failures.
