Company lists · Data refreshed September 2026

Top 25 Generator maintenance services based in the United States

Name: Generator maintenance services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 679 companies tracked

RevenueBase identified 679 generator maintenance services headquartered in the United States as of September 2026 and tracks 13,022 professional contacts across them, including 4,546 with verified work emails. Houston is the largest hub.

This list covers generator maintenance services headquartered in the 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 19, 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 19, 2026 86% judged on-target in blind review

679Companies

13,022Contacts tracked

4,546Verified emails

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The 25 largest generator maintenance services based in the United States

Ranked by team size

Top 25 of 679 generator maintenance services based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to generator maintenance services: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	NAES	Partial evidence	Issaquah, WA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,956 contacts →
	Partial evidence “NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.” Source: RevenueBase Database · checked Sep 19, 2026
2	Power Plant Services	Partial evidence	Melrose Park, IL, United StatesHQ checked Sep 19, 2026	201-500	1,463 contacts →
	Partial evidence “We are a full service turnkey provider for the power generation industry and those industries generating their own power as a means to an end.” Source: RevenueBase Database · checked Sep 19, 2026
3	Shermco Industries	Partial evidence	Irving, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,221 contacts →
	Partial evidence “Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Source: RevenueBase Database · checked Sep 19, 2026
4	Md&a	Partial evidence	Latham, NY, United StatesHQ checked Sep 19, 2026	501-1,000	379 contacts →
	Partial evidence “Mechanical Dynamics & Analysis (MD & A) provides power generation companies around the globe with a full-service OEM alternative for services, parts, and repairs.” Source: RevenueBase Database · checked Sep 19, 2026
5	Taw, An IPS Company	Indirect evidence	Greenville, SC, United StatesHQ checked Sep 19, 2026	501-1,000	305 contacts →
	Indirect evidence “Excellence in creating innovative solutions for the supply, control and use of energy.” Source: RevenueBase Database · checked Sep 19, 2026
6	Genserve	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	201-500	198 contacts →
	Partial evidence “GenServe supports critical infrastructure by delivering expert, OEM-agnostic power services across all generator systems and brands.” Source: RevenueBase Database · checked Sep 19, 2026
7	Evans Enterprises Inc., An IPS Company	Indirect evidence	Norman, OK, United StatesHQ checked Sep 19, 2026	201-500	170 contacts →
	Indirect evidence “Located throughout the Southern and Western United States, Evans Enterprises has multiple locations to serve you.” Source: RevenueBase Database · checked Sep 19, 2026
8	Clifford Power Systems, INC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 19, 2026	51-200	165 contacts →
	Partial evidence “For 40 years, Clifford Power has assured you have continuous power by providing dependable generator systems, services, rentals and parts.” Source: RevenueBase Database · checked Sep 19, 2026
9	National Electric Coil	Partial evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	501-1,000	153 contacts →
	Partial evidence “Leading independent manufacturer of generator stator and rotor windings, including inner-water and inner-hydrogen stator bars, roebel bars and diamond coils.” Source: RevenueBase Database · checked Sep 19, 2026
10	Allied Power Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	143 contacts →
	Partial evidence “APG is a growing independent provider of critical components and services to its customers in the power generation, refining, pipeline, and general industrial sectors.” Source: RevenueBase Database · checked Sep 19, 2026
11	Electric Motor & Contracting Co., INC	Indirect evidence	Chesapeake, VA, United StatesHQ checked Sep 19, 2026	201-500	131 contacts →
	Indirect evidence “Established in 1960, Electric Motor and Contracting remains one of the largest independently owned electric motor and pump repair shops in the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
12	Kraft Power Corporation	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 19, 2026	51-200	130 contacts →
	Indirect evidence “IN POWER FOR 60 YEARS Kraft Power was founded in 1965 in Boston, Massachusetts.” Source: RevenueBase Database · checked Sep 19, 2026
13	Energy Systems Southeast, LLC	Partial evidence	Birmingham, AL, United StatesHQ checked Sep 19, 2026	201-500	112 contacts →
	Partial evidence “Energy Systems Southeast is a full-service provider of industrial and residential generator sales, installation, service, parts and rentals.” Source: RevenueBase Database · checked Sep 19, 2026
14	Power Services Group, INC	Partial evidence	Cape Coral, FL, United StatesHQ checked Sep 19, 2026	51-200	107 contacts →
	Partial evidence “Power Services Group (PSG) is the leading US-owned, independent provider of turnkey maintenance, repair, and overhaul solutions for steam and gas turbines.” Source: RevenueBase Database · checked Sep 19, 2026
15	Prime Power Services, INC	Indirect evidence	Austell, GA, United StatesHQ checked Sep 19, 2026	51-200	92 contacts →
	Indirect evidence “Prime Power Services is your standby and emergency power source, because we understand what that means to you.” Source: RevenueBase Database · checked Sep 19, 2026
16	Technical Diagnostic Services	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 19, 2026	201-500	91 contacts →
	Indirect evidence “For over 25 years, Sentinel-TDS, based in Dallas/Ft.” Source: RevenueBase Database · checked Sep 19, 2026
17	Canter Power Systems	Partial evidence	Greensboro, NC, United StatesHQ checked Sep 19, 2026	51-200	88 contacts →
	Partial evidence “Canter Power Systems is a Generac Power Premier Pro dealer and one of the largest independent installers of home standby generators in the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
18	HECO	Indirect evidence	Kalamazoo, MI, United StatesHQ checked Sep 19, 2026	51-200	87 contacts →
	Indirect evidence “HECO helps industrial plants utilize more dependable motors and equipment.” Source: RevenueBase Database · checked Sep 19, 2026
19	Total Energy Systems, LLC	Indirect evidence	De Pere, WI, United StatesHQ checked Sep 19, 2026	51-200	86 contacts →
	Indirect evidence “At Total Energy Systems, real power starts with the people who’ve got your back.” Source: RevenueBase Database · checked Sep 19, 2026
20	Zabatt Power Systems INC	Partial evidence	Jacksonville, FL, United StatesHQ checked Sep 19, 2026	51-200	80 contacts →
	Partial evidence “Although our headquarters are in Jacksonville, we are proud to offer the highest quality generators and electrical service in the state of Florida.” Source: RevenueBase Database · checked Sep 19, 2026
21	Turbine Generator Maintenance	Strong evidence	Cape Coral, FL, United StatesHQ checked Sep 19, 2026	51-200	76 contacts →
	Strong evidence “Turbine Generator Maintenance, Inc.(TGM) is the premier solution provider for steam and combustion turbine and generator inspection, testing, and repair.” Source: RevenueBase Database · checked Sep 19, 2026
22	Praetorian Power Protection LLC	Partial evidence	Seattle, OR, United StatesHQ checked Sep 19, 2026	51-200	71 contacts →
	Partial evidence “Vision: To be the Global Power Protection Expert Mission: Deliver exceptional testing, maintenance, engineering, and commissioning services with uncompromising quality, safety…” Source: RevenueBase Database · checked Sep 19, 2026
23	Kiemle-Hankins	Indirect evidence	Perrysburg, OH, United StatesHQ checked Sep 19, 2026	51-200	68 contacts →
	Indirect evidence “Kiemle-Hankins is a leading industrial service and repair company.” Source: RevenueBase Database · checked Sep 19, 2026
24	Turbinepros	Strong evidence	Dayton, MN, United StatesHQ checked Sep 19, 2026	51-200	67 contacts →
	Strong evidence “TurbinePROs is a field service provider offering OCIC, Maintenance, Repair, Overhaul, and Upgrade of all rotating equipment including turbines, generators, pumps, and compressors…” Source: RevenueBase Database · checked Sep 19, 2026
25	Magnetech Industrial Services, INC	Partial evidence	Massillon, OH, United StatesHQ checked Sep 19, 2026	201-500	66 contacts →
	Partial evidence “Magnetech is an ISO-quality provider of electrical-mechanical industrial services, including testing, repair, rewind and refurbishment of ac/dc motors and generators…” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: generator maintenance services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names generator maintenance services.
Partial evidence: Its own public description names part of generator maintenance services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name generator maintenance services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 679 generator maintenance services based in the United States

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Generator maintenance services based in the United States at a glance

As of Sep 19, 2026

34.9%Verified-email coverage

19.2Average contacts per company

11-50Median size (employees)

3.7%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

296

11-50

232

51-200

112

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 679 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 generator maintenance services, 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 the United States whose own description of what they do matches “generator maintenance services”. 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 generator maintenance services), 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 generator maintenance services, and records with no verified work email. Companies headquartered outside United States 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, 4,546 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 19, 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.

Generator maintenance services by metro

Generator maintenance services in Houston25

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 generator maintenance services, 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 generator maintenance services are there based in the United States?

RevenueBase identified 679 generator maintenance services headquartered in the 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?

NAES, headquartered in Issaquah, tops this list with the largest team on record.

Which city has the most generator maintenance services?

Houston leads with 25 headquartered companies, followed by Auburn (6) and Baton Rouge (6).

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 4,546 verified decision-maker contacts tracked across these 679 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 19, 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.