Company lists · Data refreshed September 2026

Top 20 Energy engineering consulting companies based in San Diego, United States

Name: Energy engineering consulting companies based in San Diego, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 50 companies tracked

RevenueBase identified 50 company matches for energy engineering consulting companies associated with San Diego, United States as of September 2026 and tracks 799 professional contacts across them, including 259 with verified work emails. Across the United States, Houston is the largest hub for this category (227 companies); San Diego has 50.

This list covers company matches for energy engineering consulting companies associated with San Diego, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 16, 2026 How this list was built

50Companies

799Contacts tracked

259Verified emails

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The 20 largest energy engineering consulting companies based in San Diego, United States

Ranked by team size

Top 20 of 50 company matches for energy engineering consulting companies based in San Diego, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	The Engineering Partners, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	51-200	107 contacts →
	Exact match “Since 1985, The Engineering Partners Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2	MA Engineers, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	51-200	94 contacts →
	Exact match “MA Engineers delivers innovative, sustainable, energy-saving design solutions.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	Mcparlane & Associates, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	57 contacts →
	Exact match “McParlane & Associates, Inc.(MPA) is a full-service mechanical, electrical, and plumbing (MEP) engineering consulting firm who delivers an integrated approach in cost-effective…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
4	Randall Lamb	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	51-200	50 contacts →
	Exact match “Teamwork, communication, and experience form the foundation of all successful projects.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
5	Elen Consulting, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	39 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	BSE Engineering, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	29 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
7	120 Degreez MEP Engineering	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	23 contacts →
	Exact match “At 120 Degreez, our approach combines decades of deep MEP engineering expertise with cutting-edge tools and technologies to deliver high-performance solutions custom-engineered…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
8	MPE Consulting Mechanical Electrical Plumbing Lighting	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	16 contacts →
	Exact match “A consulting electrical engineering firm, MPE Consulting, Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9	Visual Concepts Lighting, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	13 contacts →
	Exact match “Visual Concepts Lighting, Inc.(VCL), established in 2012, formerly known as Nate Mullen Visual Concepts (established in 2004), is a full-service lighting consulting, design, and…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
10	Terrapro Solutions	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	12 contacts →
	Exact match “TerraPro Solutions is an established energy consulting company providing cutting edge and creative energy solutions for major utility-scale and infrastructure projects throughout…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
11	Zicali, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	9 contacts →
	Exact match “At Zicali, we’re on a mission to redefine the future of the utilities sector and spearhead the green energy revolution.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12	Greener N.O.I	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	1-10	6 contacts →
	Exact match “We aim to get more sustainability & energy-saving upgrades implemented in buildings throughout North America by performing these services among others: • Analysis of Net Operating…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13	Foshay Electric Company INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	51-200	5 contacts →
	Exact match “FOSHAY Electric is a family-owned business with more than 105 years of energy generation and energy storage experience.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	Argo Performance, LTD	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	1-10	3 contacts →
	Exact match “Argo Performance provides commissioning and consulting services to commercial and industrial clients that have facilities in California.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15	Blue Planet Energy Solutions	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	3 contacts →
	Exact match “Blue Planet Energy Solutions (BPES) was created in 2010 and is an energy service company or ESCO.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	Energy Liberty Corporation	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	1-10	2 contacts →
	Exact match “Energy Liberty Corporation delivers energy intelligence for real estate investors.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	KSU Engineering	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	51-200	2 contacts →
	Exact match “KSU Engineering is a woman owned engineering consulting firm with experience and expertise in the vast arenas of the electrical engineering world.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18	Acoi,inc	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	2 contacts →
	Exact match “ACOI, Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	Aicon Solar	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	11-50	2 contacts →
	Exact match “Is a specialized company in Architecture, Engineering and Construction of Renewable Energy Systems.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20	Direct Engineering Solutions, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	1-10	1 contacts →
	Exact match “Over 37 years of experience in providing Mechanical Consulting and Mechanical Engineering services related to HVAC & Plumbing Design, Refrigeration, Process Systems, and Title-24…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “energy engineering consulting companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 20 of 50 energy engineering consulting companies based in San Diego, United States

See the full list, filter by size, metro and specialty, and access 259 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy engineering consulting companies based in San Diego, United States at a glance

As of Sep 16, 2026

32.4%Verified-email coverage

16.0Average contacts per company

11-50Median size (employees)

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 50 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with San Diego, United States whose business descriptions match “energy engineering consulting companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 259 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Energy engineering consulting companies by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “energy engineering consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy engineering consulting companies are there based in San Diego, United States?

RevenueBase identified 50 company matches for energy engineering consulting companies associated with San Diego, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

The Engineering Partners, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most energy engineering consulting companies?

Houston leads the United States with 227 company records, followed by New York (125) and Austin (69). San Diego has 50.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 259 professional contacts with verified work emails tracked across these 50 companies; direct dials are available where recorded.

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 SmartSearch, 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.