Company lists · Data refreshed September 2026

Top 24 Electrical systems integration contractors based in Seattle, United States

RevenueBase identified 42 electrical systems integration contractors headquartered in Seattle, United States as of September 2026 and tracks 1,924 professional contacts across them, including 678 with verified work emails. Across the United States, Houston is the largest hub for this category (240 companies); Seattle has 42.

This list covers electrical systems integration contractors headquartered in Seattle, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review
42Companies
1,924Contacts tracked
678Verified emails
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The 24 largest electrical systems integration contractors based in Seattle, United States

Ranked by team size
Top 24 of 42 electrical systems integration contractors based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to electrical systems integration contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 2026501-1,000533 contacts →

Partial evidence

“North Coast, family-owned and operated since 1913, is one of the largest and fastest growing electrical distributors in the nation with 43 locations operating in Washington…”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceSeattle, WA, United StatesHQ checked Sep 29, 2026501-1,000434 contacts →

Indirect evidence

“For more than 70 years Cochran has been powering the Pacific Northwest.”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 202651-20070 contacts →

Partial evidence

“Since 1951, Nelson Electric has been wiring the buildings that define the Puget Sound region.”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-5031 contacts →

Partial evidence

“US Electric is your turnkey Marine Electrical Services leader.”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-5029 contacts →

Partial evidence

“Artisan Electric installs solar panels, electrical and EV chargers in Seattle & Western Washington.”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 202651-20028 contacts →

Partial evidence

“Western Electrical Services, Inc.(WES) formerly known as Advanced Electrical Testing (AET) has been performing electrical testing services since 1996, as part of Northwest Circuit…”

Source: RevenueBase Database · checked Sep 29, 2026
7Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 202651-20022 contacts →

Partial evidence

“Welcome to Evergreen Power Systems, Inc.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-5021 contacts →

Indirect evidence

“EBD Services is committed to serving our clients and community as trusted partners.”

Source: RevenueBase Database · checked Sep 29, 2026
9Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-5021 contacts →

Partial evidence

“Count on us for complete electrical overhauls, implementing advanced technologies, EV charging station installations, and any specific enhancements that will make your project a…”

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-5019 contacts →

Partial evidence

“We are a West Coast electronic systems integrator serving locations nationwide.”

Source: RevenueBase Database · checked Sep 29, 2026
11Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 2026501-1,00017 contacts →

Partial evidence

“As American troops returned from World War II, several of those veterans decided to start an electrical contracting company.”

Source: RevenueBase Database · checked Sep 29, 2026
12Strong evidenceSeattle, WA, United StatesHQ checked Sep 29, 202651-20016 contacts →

Strong evidence

“BlueCore Power is a commercial and industrial electrical contractor committed to a superior standard of quality and individualized customer service.”

Source: RevenueBase Database · checked Sep 29, 2026
13Strong evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-5013 contacts →

Strong evidence

“Elmore Electric serves the commercial marine industry, providing electrical system design, manufacturing, installation, and service in addition to providing high quality…”

Source: RevenueBase Database · checked Sep 29, 2026
14Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-5011 contacts →

Partial evidence

“Kemly Electric, Inc : Serving the greater Seattle Area since 1991 Kemly Electric has been providing expert quality service and repair to the greater Seattle area for over 20 years.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 20261-109 contacts →

Partial evidence

“Electrical services including testing, commissioning, troubleshooting, consulting, startup, retrofit, and modernization.”

Source: RevenueBase Database · checked Sep 29, 2026
16Strong evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-506 contacts →

Strong evidence

“Ergosync is a full-service electrical and systems engineering company offering design services, project management, construction support, and commissioning services.”

Source: RevenueBase Database · checked Sep 29, 2026
17Strong evidenceSeattle, WA, United StatesHQ checked Sep 29, 20261-106 contacts →

Strong evidence

“4th Systems is a full-service Electrical Contractor located in Seattle, Washington.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceSeattle, WA, United StatesHQ checked Sep 29, 202651-2006 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-505 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-505 contacts →

Indirect evidence

“WHAT WE DO CETS, Inc.”

Source: RevenueBase Database · checked Sep 29, 2026
21Partial evidenceSeattle, WA, United StatesHQ checked Sep 29, 202611-503 contacts →

Partial evidence

“Started in 2002, We have working in the Greater Seattle Area providing expert Electrical services.”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceSeattle, WA, United StatesHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
23Indirect evidenceSeattle, United StatesHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“Commercial, Residential, Marine & Industrial”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceSeattle, WA, United StatesHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“Founded by Jon Mathison, AIA offers industrial automation services throughout the Pacific Northwest, Alaska, and Hawaii.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 24 of 42 electrical systems integration contractors based in Seattle, United States

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Electrical systems integration contractors based in Seattle, United States at a glance

As of Sep 29, 2026
35.2%Verified-email coverage
45.8Average contacts per company
11-50Median size (employees)
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
14
51-200
7
501-1,000
3
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 42 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among electrical systems integration contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Seattle, United States whose own description of what they do matches “electrical systems integration contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names electrical systems integration contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among electrical systems integration contractors, and records with no verified work email. Companies headquartered outside Seattle are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 678 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Electrical systems integration contractors by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names electrical systems integration contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many electrical systems integration contractors are there based in Seattle, United States?

RevenueBase identified 42 electrical systems integration contractors headquartered in Seattle, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

North Coast Electric, headquartered in Seattle, tops this list with the largest team on record.

Which city in the United States has the most electrical systems integration contractors?

Houston leads the United States with 240 headquartered companies, followed by New York (133) and Los Angeles (79). Seattle has 42.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 678 verified decision-maker contacts tracked across these 42 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.