Power Systems Engineering

For more than 50 years, Shermco has solved complex power system engineering challenges for customers across a wide range of industries. Our expertise goes beyond individual projects, supporting the performance, safety, and reliability of entire electrical systems. A strong power system starts with accurate one-line diagrams, detailed power system studies, and coordinated models verified through arc flash analyses – Shermco is your trusted partner for all of these.

Shermco’s Power Systems Engineering team provides conceptual design and front-end engineering (FEED) studies to modernize aging infrastructure, enhance system performance, and plan for future growth. Our engineers work closely with you to develop practical, sustainable solutions for long-term operational success.

We deliver comprehensive electrical solutions across the full asset lifecycle: from power system studies and design to commissioning, startup, and ongoing asset management. Our approach prioritizes safety, strengthens reliability, and optimizes performance throughout your operation

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Our Services

Our team specializes in power system engineering solutions that strengthen and modernize existing facility infrastructure. With Shermco, you gain access to unmatched industry expertise, proven safety performance, and a full range of engineering services spanning design, analysis, commissioning, and ongoing system support.

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Power Systems Studies

Short Circuit, Device Evaluation, Coordination Studies

NFPA 70E Arc Flash Analysis & Equipment Labeling

Specialty Studies:

Back-to-back Capacitor Switching
Load Flow Analysis
Transient Stability
Harmonic Analysis

Power Quality Analysis:

Field Evaluation & Measurements
Data Analysis
PQ Mitigation Solutions
Arc Flash Hazards and Mitigation Solutions
Identify and Replace Over-dutied Equipment
End of Life Equipment Replacement

Power System Engineering & Design

Front End Loading (FEL) / Front End Engineering Design
(FEED) Studies:

FEL-0: Feasibility
FEL-1: Concept
FEL-2: Detailed Scope
FEL-3: Design and Construction (IFC)

Specialize in:

HV & MV Substation Engineering & Design
LV & MV Switchgear
LV Secondary Unit Substations & Switchgear
LV & MV Motor Control

Emergency Response Services

Initial Callout Assessment
Temporary Power Support
Emergency Repairs & Triage Planning
Turnkey Recovery Planning and Execution
Documentation & Commissioning

Shermco Renew: LV & MV Switchgear Modernization

Upgrades and Enhancements:

Circuit Breaker Technology for Reliability and Protection
Arc Flash Mitigation and Remote Racking/Operation
Relay Replacements (Electro-mechanical to Digital)
Paralleling Switchgear and Generator Controls Modernization
Metering & Thermal Protection Monitoring Upgrades

Complex Turnkey Power Distribution

Incoming Service & Substation Upgrades/Replacements
LV, MV, and HV Systems
Capacity Evaluations and Upgrades
Backup Power Systems (UPS and Generators)
Complex Brownfield Projects and Upgrades

VFD & Motor Controls

MV VFDs: Preventative Maintenance, Troubleshooting & Repairs, and Upgrades
OEMs Served: Siemens, Robicon, Toshiba, Allen Bradley, TMEIC, Yaskowa, and others
Synchronous Motor Control: Brush and Brushless DC Field Control
MV Soft Starters: Preventative Maintenance, Troubleshooting & Repairs, and Upgrades
LV & MV Application Engineering and Turnkey Replacements

Power System Stability and Compliance Engineering

NERC Compliance Assessments:

PRC-002, PRC-019, PRC-024, PRC-025, PRC-027, PRC-028, PRC-029, PRC-030
MOD-025, MOD-026, MOD-027, MOD-032, VAR-501

Dynamic Modeling:

Positive Sequence Models (PSSE/PSLF)
Electromagnetic Models (PSCAD)
Model validation and verification to meet NERC, ERCOT, CAISO, PJM and other agency requirements and specifications

Substation Studies

Insulation Coordination & Transient Overvoltage Study

Harmonics Study

AC Short Circuit Study

Grounding Study

Transient Recovery Voltage Study

Load Flow & Reactive Compensation Study

AC and DC Arc Flash Study

Protective Device Coordination

Service Offerings

Power Systems Studies

Shermco is your partner in performing comprehensive power system studies including short circuit, coordination, power quality, and arc flash analysis with full NFPA 70E compliance and remediation support.

Equipment Modernization (Shermco Renew)

From breaker retrofits and relay upgrades to complete electrical system replacements, Shermco provides a full spectrum of modernization solutions – customized to extend equipment life, improve reliability & safety, and meet evolving operational needs.

Power System Stability and Compliance Engineering

We build control panels, electric racks/skids, prepackaged PDC buildings, and other equipment tailored to your system specifications.

Why Choose Shermco?

Shermco’s Power Systems Engineering (PSE) team brings over 50 years of experience, backed by regional support across the U.S., delivering quality solutions to our customers. Our team provides expert guidance on existing power system requirements and ensures your project is executed safely, efficiently, and on budget. Our expertise enables us to:

Serve as industry-leading experts in evaluating and optimizing power systems
Deliver projects from concept to commissioning with unmatched speed to market
Provide solutions that meet your needs on time, on budget, and with the highest safety standards