True Power Systems delivers arc flash analysis, short-circuit studies, and coordination studies for Washington data centers, aerospace and manufacturing plants, public-power utilities, healthcare institutions, and municipal facilities. PE-stamped and code-compliant.
Washington Quick Facts
PE License
Active · State of Washington
Standards
NFPA 70E · IEEE 1584 · IEEE 242 · ANSI C37 · OSHA 1910
Software Platforms
ETAP · EasyPower · SKM/PTW · CYMCAP
Washington Services
All studies are performed by a licensed Professional Engineer, delivered with PE stamp, and compliant with NFPA 70E, IEEE 1584, and OSHA 29 CFR 1910.335 requirements.
NFPA 70E compliant arc flash studies with IEEE 1584-2018 calculations, equipment labeling, and PPE recommendations. Required for any Washington facility where energized electrical work is performed.
NFPA 70E · IEEE 1584 · OSHA
Fault current calculations to verify equipment interrupting ratings are adequate. Required when adding new equipment, upgrading service, or when utility fault current levels have changed.
ANSI/IEEE · NFPA 70 NEC
Time-current curve analysis to ensure protective devices operate in the correct sequence. Critical for facilities with multiple sources, generators, or complex distribution systems.
IEEE 242 · NFPA 70
Power quality studies for facilities with VFDs, motor controls, or non-linear loads. Essential for Washington wastewater treatment plants, manufacturing facilities, and data centers.
IEEE 519 · IEEE 1159
Steady-state power flow studies to identify voltage regulation issues and verify equipment loading. Critical for planning electrical infrastructure expansions and additions.
IEEE 399
Cable ampacity calculations for underground duct banks using CYMCAP, required for large commercial developments, utilities, and medium-voltage underground distribution projects in Washington.
CYMCAP · Neher-McGrath
Washington Markets
Potential Washington Customer Base
Counts below are the total Washington establishments per sector across the state — the universe of facilities that may need a power system study, not a TPS client list.
8,066
Manufacturing
285,839 workers
24,052
Healthcare & social assistance
524,832 workers
4,771
Educational services
287,382 workers
1,106
Data centers & hosting
24,239 workers
237,649 total Washington establishments · Source: U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages
Power system studies and Master Service Agreements for Washington cities, counties, and public agencies. Arc flash compliance for city halls, public works facilities, and transit authorities.
Harmonic analysis and arc flash studies for Washington water and wastewater utilities. Experience with pump station electrical systems, VFD installations, and SCADA-integrated power distribution.
Arc flash, short-circuit, and coordination studies for Washington manufacturing plants, food processing facilities, and heavy industrial operations. OSHA compliance documentation included.
Power demand analysis and complete power system studies for Washington data centers and mission-critical facilities. Capacity planning, redundancy verification, and feasibility studies for new and expanding sites.
Arc flash studies and electrical engineering support for Washington K-12 schools and universities. Coverage for classroom buildings, athletic facilities, and central plant electrical systems.
Engineering support for Washington EV charging installations and renewable energy projects, including charger load studies, service capacity analysis, and utility interconnection support.
Washington Power Landscape
Every power system study TPS delivers in Washington accounts for the utilities, fault duties, and interconnection requirements specific to the state. This is the landscape our Washington work sits in.
Washington is part of the Western Interconnection and does not sit inside a centralized RTO or ISO. Wholesale transmission is largely operated by the Bonneville Power Administration (BPA), and Washington participates in the CAISO Western Energy Imbalance Market (WEIM) and the emerging Western Resource Adequacy Program (WRAP). Investor-owned utilities (Puget Sound Energy, Avista, Pacific Power) sit alongside consumer-owned public utilities, municipal utilities, and Public Utility Districts (Seattle City Light, Tacoma Power, Snohomish County PUD, Chelan PUD, Grant PUD, etc.). The available fault current at any facility service is set by the serving utility and can shift when that utility upgrades transformers, ties, or substations, which is why short-circuit and arc flash studies should be revisited after any utility-side work.
Washington operates an OSHA-approved state plan: DOSH (the Division of Occupational Safety and Health), administered by the Washington Department of Labor and Industries (L&I), covers both private-sector and state/local government employers. DOSH enforces electrical safety under Washington Administrative Code (WAC) chapter 296-24 and treats NFPA 70E as the consensus standard for arc flash risk assessment and equipment labeling. A current, PE-sealed arc flash study is the documentation a DOSH compliance officer or an insurance auditor expects to see.
The authority having jurisdiction for the installation itself is typically the Washington Department of Labor and Industries (L&I) electrical program or, in cities and counties that have their own electrical inspection departments, the local AHJ. Both enforce the National Electrical Code as adopted in Washington. Every study True Power Systems delivers in the state is modeled to current IEEE and NFPA methodology and sealed by a Professional Engineer licensed in Washington.
Regulatory & Grid Context
State Regulator
Washington Utilities and Transportation Commission
WUTC
Wholesale Grid Operator
Western Interconnection — Bonneville Power Administration (BPA) wholesale transmission; participating in WEIM / WRAP
Major Washington Utilities
Washington Industrial Corridors
Why TPS in Washington
True Power Systems holds an active Professional Engineer license in the State of Washington and serves facilities across the state, from the Seattle-Tacoma-Everett aerospace and manufacturing belt to the Spokane industrial base, the Tri-Cities energy and research corridor, and the Quincy / East Wenatchee hyperscale data-center footprint. Our engineers model every study in ETAP, EasyPower, SKM/PTW, and CYMCAP to current code.
We are registered as a Veteran-Owned Small Business (VOSB) in SAM.gov, satisfying both private-sector and government contracting requirements for Washington cities, counties, federal sites, public-power utilities, and PUDs.
What Every Study Includes
VOSB & Federal Credentials
UEI: H6HAZKAD4LJ7 · CAGE: 08E02
NAICS 541330 / 541690 / 238210
Active SAM.gov Registration
SDVOSB-eligible per 38 U.S.C. § 8127
Washington FAQ
Washington operates a state OSHA plan — DOSH, administered by the Washington Department of Labor and Industries (L&I) — covering both private-sector and public-sector employers. DOSH enforces electrical safety under WAC chapter 296-24, which references NFPA 70E for arc flash risk assessment and equipment labeling.
If workers ever interact with energized equipment — troubleshooting, racking breakers, voltage testing — NFPA 70E calls for an arc flash risk assessment and DOSH expects equipment to carry incident-energy labels. New equipment, a service upgrade, or a change in utility fault current all trigger a new or updated study.
Washington sits inside the Western Interconnection with no centralized RTO; BPA operates the bulk of wholesale transmission and the state participates in the CAISO Western EIM. Facilities are served by a mix of investor-owned utilities (Puget Sound Energy, Avista, Pacific Power), municipal utilities (Seattle City Light, Tacoma Power), and PUDs (Snohomish, Chelan, Grant, etc.). The fault current available at your service comes from the utility and changes when the utility upgrades equipment, so short-circuit and arc flash results should be re-checked after utility-side work.
A power system study used for compliance must be sealed by a Professional Engineer licensed in Washington. True Power Systems holds an active Washington PE license and stamps every Washington deliverable.
A complete package covers incident-energy calculations and arc flash boundaries, ANSI Z535 equipment labels, short-circuit and equipment-duty evaluation, protective-device coordination, an as-studied one-line diagram, and a PE-sealed report.
Washington Inquiries
Ready to get started on a Washington power system study? Fill out the form and a TPS engineer will respond within one business day with a scope and fee proposal.
Contact TPS
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