Company lists · Data refreshed September 2026

Top 25 Hydroelectric engineering firms based in the United States

Name: Hydroelectric engineering firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 337 companies tracked

RevenueBase identified 337 hydroelectric engineering firms headquartered in the United States as of September 2026 and tracks 12,525 professional contacts across them, including 5,820 with verified work emails. Houston is the largest hub.

This list covers hydroelectric engineering firms 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 16, 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 16, 2026 86% judged on-target in blind review

337Companies

12,525Contacts tracked

5,820Verified emails

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The 25 largest hydroelectric engineering firms based in the United States

Ranked by team size

Top 25 of 337 hydroelectric engineering firms based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to hydroelectric engineering firms: 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	FTI	Partial evidence	Menasha, WI, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,741 contacts →
	Partial evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 16, 2026
2	Ulteig	Partial evidence	Fargo, ND, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,362 contacts →
	Partial evidence “Ulteig delivers comprehensive design engineering, program management and technical and field services that strengthen infrastructure vital to everyday life.” Source: RevenueBase Database · checked Sep 16, 2026
3	Wanzek Construction, Inc., A Mastec Company	Indirect evidence	Fargo, ND, United StatesHQ checked Sep 16, 2026	1,001-5,000	933 contacts →
	Indirect evidence “Wanzek Construction, Inc, a MasTec Renewables company, is a leading general construction contractor and clean energy services company headquartered in Fargo, North Dakota.” Source: RevenueBase Database · checked Sep 16, 2026
4	Shimmick Corporation	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	760 contacts →
	Indirect evidence “At Shimmick (NASDAQ: SHIM), we’re shaping the future of sustainable infrastructure through innovative solutions that advance communities and protect our environment.” Source: RevenueBase Database · checked Sep 16, 2026
5	Arb, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	528 contacts →
	Indirect evidence “ARB Inc.” Source: RevenueBase Database · checked Sep 16, 2026
6	NEI Electric Power Engineering, INC	Partial evidence	Lakewood, CO, United StatesHQ checked Sep 16, 2026	201-500	318 contacts →
	Partial evidence “NEI provides professional expertise and design engineering services for all aspects of power systems engineering.” Source: RevenueBase Database · checked Sep 16, 2026
7	Infrastructure And Energy Alternatives, Inc. IEA , A Mastec Company	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 16, 2026	5,001-10,000	318 contacts →
	Indirect evidence “Infrastructure & Energy Alternatives (IEA), a MasTec company, was formed in 2011 and began building an integrated portfolio of energy and infrastructure construction companies.” Source: RevenueBase Database · checked Sep 16, 2026
8	Asplundh Engineering Services	Partial evidence	Willow Grove, PA, United StatesHQ checked Sep 16, 2026	1,001-5,000	284 contacts →
	Partial evidence “Asplundh Engineering Services leverages more than 100 years of experience to provide a superior, single-point solution for engineering, design and testing services to…” Source: RevenueBase Database · checked Sep 16, 2026
9	Illumine-I	Indirect evidence	Austin, CA, United StatesHQ checked Sep 16, 2026	201-500	275 contacts →
	Indirect evidence “The world runs on power.” Source: RevenueBase Database · checked Sep 16, 2026
10	Sukut Construction, LLC	Indirect evidence	Santa Ana, CA, United StatesHQ checked Sep 16, 2026	501-1,000	227 contacts →
	Indirect evidence “Sukut Construction is one of America’s leading heavy civil contractors with over 55 years of proven industry expertise on residential, public, and commercial projects.” Source: RevenueBase Database · checked Sep 16, 2026
11	Boswell	Partial evidence	South Hackensack, NJ, United StatesHQ checked Sep 16, 2026	201-500	190 contacts →
	Partial evidence “Boswell is a leading, fully integrated, multi-disciplinary firm providing a comprehensive range of engineering and power & energy services to federal, state, county, and local…” Source: RevenueBase Database · checked Sep 16, 2026
12	United Engineers & Constructors An Aecon Company	Partial evidence	Mount Laurel, NJ, United StatesHQ checked Sep 16, 2026	201-500	187 contacts →
	Partial evidence “United Engineers & Constructors is an industry-leading infrastructure engineering, procurement, construction, and consulting company dedicated to improving lives by delivering the…” Source: RevenueBase Database · checked Sep 16, 2026
13	Rizzo International	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 16, 2026	51-200	165 contacts →
	Partial evidence “RIZZO International, Inc.(RIZZO) is a global engineering and consulting firm headquartered in Pittsburgh, Pennsylvania US.” Source: RevenueBase Database · checked Sep 16, 2026
14	Revamp Engineering, INC	Partial evidence	Oakland, CA, United StatesHQ checked Sep 16, 2026	51-200	162 contacts →
	Partial evidence “Revamp is the premier engineering firm for large-scale renewable energy projects.” Source: RevenueBase Database · checked Sep 16, 2026
15	PSE Engineers & Consultants	Partial evidence	Madison, WI, United StatesHQ checked Sep 16, 2026	51-200	157 contacts →
	Partial evidence “PSE is an electrical energy expert that provides relationship-driven engineering and consulting services for forward-thinking partners who pursue long-term energy solutions.” Source: RevenueBase Database · checked Sep 16, 2026
16	PND Engineers, INC	Partial evidence	Anchorage, AK, United StatesHQ checked Sep 16, 2026	51-200	139 contacts →
	Partial evidence “PND Engineers, Inc.(PND) is a consulting engineering firm founded in 1979 in Anchorage, Alaska.” Source: RevenueBase Database · checked Sep 16, 2026
17	RLC Engineering	Indirect evidence	Hallowell, ME, United StatesHQ checked Sep 16, 2026	51-200	124 contacts →
	Indirect evidence “Ingenuity, Integrity, and Passion.” Source: RevenueBase Database · checked Sep 16, 2026
18	The Engineering Partners, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	107 contacts →
	Partial evidence “Since 1985, The Engineering Partners Inc.” Source: RevenueBase Database · checked Sep 16, 2026
19	NTM Engineering	Indirect evidence	Dillsburg, PA, United StatesHQ checked Sep 16, 2026	51-200	100 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
20	ASI Construction LLC	Indirect evidence	Colorado Springs, CO, United StatesHQ checked Sep 16, 2026	201-500	94 contacts →
	Indirect evidence “ASI Construction LLC (ASI), a proud member of the Shaft Drillers International (SDI) family of companies, is a self-performing Heavy Civil Contractor specializing in Dam…” Source: RevenueBase Database · checked Sep 16, 2026
21	RK Power Corp	Indirect evidence	San Juan, United StatesHQ checked Sep 16, 2026	51-200	92 contacts →
	Indirect evidence “Somos una compañía formada por profesionales altamente calificados, fundada en el año 2010 con más de 10 años de experiencia en el mercado, dedicados a la Fabricación, Diseño…” Source: RevenueBase Database · checked Sep 16, 2026
22	Bowen Collins & Associates	Indirect evidence	Draper, UT, United StatesHQ checked Sep 16, 2026	51-200	85 contacts →
	Indirect evidence “Bowen Collins & Associates, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
23	ECF Engineering Consultants	Indirect evidence	West Palm Beach, FL, United StatesHQ checked Sep 16, 2026	51-200	84 contacts →
	Indirect evidence “E.” Source: RevenueBase Database · checked Sep 16, 2026
24	West Consultants, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	51-200	84 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
25	American Hydro	Partial evidence	York, PA, United StatesHQ checked Sep 16, 2026	51-200	77 contacts →
	Partial evidence “Engineering Our focus is to create designs that maximize turbine capacity and efficiency while eliminating cavitation to meet our customers’ needs.” Source: RevenueBase Database · checked Sep 16, 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: hydroelectric engineering firms. 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 hydroelectric engineering firms.
Partial evidence: Its own public description names part of hydroelectric engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydroelectric engineering firms. 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 337 hydroelectric engineering firms based in the United States

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Hydroelectric engineering firms based in the United States at a glance

As of Sep 16, 2026

46.5%Verified-email coverage

37.2Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

170

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 337 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 hydroelectric engineering firms, 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 “hydroelectric engineering firms”. 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 hydroelectric engineering firms), 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 hydroelectric engineering firms, 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, 5,820 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 16, 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.

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 hydroelectric engineering firms, 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 hydroelectric engineering firms are there based in the United States?

RevenueBase identified 337 hydroelectric engineering firms 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?

FTI, headquartered in Menasha, tops this list with the largest team on record.

Which city has the most hydroelectric engineering firms?

Houston leads with 6 headquartered companies, followed by Irvine (6) and Chicago (5).

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 5,820 verified decision-maker contacts tracked across these 337 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 16, 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.