Protection and automation
GT3 and GT4 Protective Relay Replacement
Pasadena Water and Power
Protective relay replacement for gas turbine units GT3 and GT4.
Engineering Tools
Free calculators our engineers use on real projects, 11 so far. Each one runs in your browser and shows every step.
BUS ACables and raceways
BUS BShort circuit and arc flash
BUS CBuilding circuits and equipment
BUS DOverhead distribution
Recently used
NOTES
- Nothing you enter is sent to Kewo Engineering or stored on a server.
- Each tool shows its method, references and every calculation step.
- Bookmark any tool, or install the tools as an app on your phone or desktop to use them offline.
- Results support, and do not replace, the judgment of a licensed engineer.
REVISIONSENGINEERING TOOLS
| REV | DESCRIPTION | DATE |
|---|---|---|
| MV Cable Ampacity Calculator | Oct 10 | |
| Short Circuit and Arc Flash | Oct 10 | |
| Conduit Fill Calculator | Oct 10 | |
| LV Cable Ampacity Calculator (preview) | Oct 10 | |
| 12 kV Pole Explorer (preview) | Oct 10 | |
| Panel Schedule Calculator | Oct 10 | |
| Cable Pulling Calculator | Oct 9 | |
| Circuit Calculator (preview) | Oct 9 | |
| Motor Calculator (preview) | Oct 9 | |
| Fault Current Calculator | Oct 9 | |
| Transformer Calculator | Oct 9 |
The clouded tool is the latest release.
Company
Substation, protection and energy storage engineering for public agencies
Kewo Engineering Corporation designs and reviews the electrical and civil systems behind substations, transmission, protection, battery storage and EV charging for Southern California's utilities, ports, transit agencies and cities. We are a certified small business in Diamond Bar, California.
Brian Kewo founded the firm in 2014 after working in substation design at the Los Angeles Department of Water and Power, where he managed and engineered projects from $20,000 to $79 million. We work directly for public agencies and as a subconsultant to the large engineering firms that lead their programs.
Brian Kewo, P.E.
Founder and President. M.S. Electrical Engineering (Electric Power) and M.S. Financial Engineering, University of Southern California; B.S. Electrical Engineering, Cal Poly Pomona. Senior Member, IEEE Power and Energy Society.
2019 IEEE Region 6 Award for Outstanding Corporate Service
Kewo Engineering Corporation
- Established
- 2014
- Office
- Diamond Bar, California
- Professional Engineer
- Electrical, Civil, Mechanical (CA); NV
- CSLB contractor
- Class A, Class B, C-10
- Project management
- PMP, CCM
- Security
- CISSP, CISM
Certifications
- LA Metro SBE, pre-qualified consultant
- Caltrans DBE, MBE
- California DGS Small Business (Micro)
- City of Los Angeles SLB, SBE, VSBE
Clients and teaming partners
Utilities
- LADWP
- Pasadena Water and Power
- Southern California Edison
- Anaheim Public Utilities
- Monte Vista Water District
Transit, ports and airports
- LA Metro
- Metrolink
- Los Angeles World Airports
- Port of Los Angeles
- Port of Long Beach
- Port of Oakland
- Hollywood Burbank Airport
- Foothill Gold Line
- Omnitrans
Cities, counties and institutions
- City of Thousand Oaks
- City of Oxnard
- City of Banning
- County of Sonoma
- Kern County
- Housing Authority of the City of LA
- California DGS
- Sonoma Valley USD
- Cedars-Sinai
Prime consultants
- AECOM
- Arup
- Hatch
- WSP
- HDR
- TYLin
- Stantec
- Mesa Associates
- Beta Engineering
- KTY Engineering
- Balfour Beatty
- Deloitte
Services
From first study through commissioning, as prime or subconsultant.
Design and engineering
Electrical and civil design from concept through issued-for-construction drawings and specifications.
Substations and switchyards, transmission and distribution lines, duct banks, protection and control, grounding, lighting and foundations, delivered at 30, 60, 90 and 100 percent. Supporting studies include grounding, photometrics, AC/DC load, short circuit, arc flash and protection coordination.
Example Receiving Station X, 230/34.5 kV, 320 MVA, for LAWA and LADWP
Project and construction management
Owner's engineering, submittal review, construction monitoring and commissioning support.
We act as the agency's technical representative on design-build and EPC contracts: reviewing contractor submittals, tracking schedule and cost, monitoring construction, and closing out with commissioning and as-built drawings. Led by a PMP and Certified Construction Manager.
Example Glenarm BESS, Owner's engineer, 25 MW / 100 MWh, for Pasadena Water and Power
Specifications and procurement
Technical specifications, bid documents and bid evaluation for major electrical equipment.
Mobile substations, battery storage, EV chargers, breakers and switchgear. We write the technical requirements, answer bidder questions, evaluate proposals, and check Buy America (BABA) compliance on federally funded work.
Example Mobile substation, Technical specification for Pasadena Water and Power
Training and knowledge transfer
Training for utility staff on new systems, equipment and standards.
Classroom and field training on substation automation, protection systems and newly installed equipment, plus the manuals and standards that keep the knowledge in-house after the project ends.
Example Substation automation, Project controls and training support for LADWP
Quality assurance and control
Independent review of design packages before they reach construction.
Third-party QA/QC of protection and control designs, drawings, cable schedules, material lists and calculations, checked against utility standards and the governing codes.
Example Center Substation, QA of 66 kV protection and control design for SCE
Technical areas
- Substations and switching stations to 500 kV
- Transmission and series compensation
- Protection and control, SEL relaying
- Substation automation, RTU and SCADA
- Distribution and overhead-to-underground conversion
- Battery storage and solar interconnection
- EV charging and fleet electrification
- Grounding, lighting and arc flash studies
- Civil and structural foundations
- OT cybersecurity
Projects
Recent work for utilities, transit agencies, ports and cities.
Transportation electrification
Arroyo EV Charging Depot, Phase II
Pasadena Water and Power
Second phase of the Arroyo EV charging depot.
Storage and solar
Glenarm 25 MW / 100 MWh BESS, Owner's Engineer
Pasadena Water and Power, 2025–2026
Review of EPC contractor submittals and support through construction, commissioning and as-builts, covering equipment, CAISO metering, civil and structural work, arc flash and protection coordination.
Storage and solar
Glenarm BESS Interconnection Study
Pasadena Water and Power
Interconnection study for the Glenarm battery energy storage project.
More projects
- Receiving Station X (RS-X)LAWA and LADWP2019–2024
New 320 MVA, 230/34.5 kV receiving station serving LAX, the first LADWP receiving station built in over three decades. Electrical design at 30, 60, 90 and 100 percent, four 230 kV underground duct banks, and construction support, with grounding, photometric and AC/DC load studies.
- McCullough–Victorville Lines 1 and 2 Series CompensationLADWP2022–present
Replacement of series capacitors and associated equipment at the McCullough and Victorville switching stations. Electrical design of conduits, grounding, bus work, breakers, switches, CVTs, line traps and SCADA/HMI support, plus submittal review and construction monitoring.
- Sylmar Ground Return System ReplacementLADWP
Engineering support for replacement of the ground return system at Sylmar.
- Mobile Substation SpecificationPasadena Water and Power
Technical specification for a utility mobile substation.
- Center Substation 66 kV Circuit Breaker ReplacementSouthern California Edison2023
Quality assurance review of the protection and control design for replacement 66 kV breakers and disconnects and new line PTs: design drawings, cable schedules and material lists.
- Park, Anaheim and Clair Substation Protection and RTU UpgradesCity of Anaheim2020–2022
Protection and RTU upgrades across three substations. At Park, 11 relay racks removed and 17 installed; at Anaheim, 7 racks converted to SEL RTAC and Axion. Site visits, system design and drawings to city standards.
- Substation Automation System Engineering SupportLADWP
Engineering, project controls and training support for LADWP's substation automation program.
- Bus Barn Battery Storage and Solar PVSonoma Valley USD
Battery storage and solar PV at the district's bus barn, an EPRI-supported project.
- 5 MW Solar PV Single-Line Diagram for InterconnectionEpic American Energy
Single-line diagram for a 5 MW solar PV plant's utility interconnection application.
- Overhead-to-Underground Conversion, 8730 Alden DriveCedars-Sinai2024–present
Utility coordination with LADWP on lines, poles and temporary pole relocation, and electrical documentation for the affected buildings submitted to LADBS.
- Plant 1 Underground PowerlineMonte Vista Water District2025
Moving overhead power and communication lines underground with a new pad-mounted transformer: site assessment, underground distribution design, SCE coordination and permitting.
- Overhead Electrical Upgrades (GSA 03)City of Anaheim
Electrical design services for overhead distribution upgrades.
- South Oxnard Center Lighting DesignCity of Oxnard
Lighting design for the South Oxnard Library and South Oxnard Center.
- Zero Emission Bus Master Plan (Re)VisioningLA Metro2024–present
Update of Metro's zero emission bus master plan: lifecycle program cost framework, ZEB operations strategies, regional charging needs, and transition planning for contracted service divisions.
- SCE Method of Service StudyLA Metro
Method of service study with Southern California Edison for LA Metro.
- Electric Bus Charger Construction ManagementOmnitrans
Construction management for electric bus chargers at two bus yards.
- EV, Energy Storage and Solar Program ManagementCity of Thousand Oaks
Program management for the city's EV charging, energy storage and solar infrastructure.
- Maintenance Yards EV Charger ExpansionPasadena Water and Power
EV charger expansion at the utility's maintenance yards.
- CP Dayton Foundations DesignMetrolink
Foundations design at Control Point Dayton.
Contact
For teaming on an RFQ or RFP, send the solicitation number, due date and the scope you need covered.
1370 Valley Vista Drive, Suite 200 #2114
Diamond Bar, CA 91765
Certifications
- LA Metro SBE, pre-qualified consultant
- Caltrans DBE, MBE
- California DGS Small Business (Micro)
- City of Los Angeles SLB, SBE, VSBE
FIRM
Kewo Engineering Corporation
OFFICE1370 Valley Vista Drive, Suite 200 #2114
Diamond Bar, CA 91765
Diamond Bar, CA 91765
ENGINEER IN CHARGEBrian Kewo, P.E.
Electrical, Civil, Mechanical
Electrical, Civil, Mechanical
CERTIFICATIONSMetro SBE, Caltrans DBE/MBE, DGS SB (Micro), City of LA SLB/SBE/VSBE
DWG NO.KEC-WEB-001
Scale: NTS
Scale: NTS
REV 26.10