Company lists · Data refreshed September 2026

Top 22 Energy sector IT consultants based in Fairfax, United States

Name: Energy sector IT consultants based in Fairfax, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 33 companies tracked

RevenueBase identified 33 company matches for energy sector IT consultants associated with Fairfax, United States as of September 2026 and tracks 1,304 professional contacts across them, including 319 with verified work emails. Across the United States, Houston is the largest hub for this category (465 companies); Fairfax has 33.

This list covers company matches for energy sector IT consultants associated with Fairfax, 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 28, 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 28, 2026 How this list was built

33Companies

1,304Contacts tracked

319Verified emails

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The 22 largest energy sector IT consultants based in Fairfax, United States

Ranked by team size

Top 22 of 33 company matches for energy sector IT consultants based in Fairfax, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	PEG	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	201-500	214 contacts →
	Exact match “PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Nationwide IT Services, INC	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	201-500	190 contacts →
	Exact match “Nationwide IT Services, Inc.(NIS) is designated 8(a) by the SBA, and a CVE verified Service Disabled Veteran Owned Small Business (SDVOSB) Information Technology (IT) and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Concept Plus, LLC	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	201-500	168 contacts →
	Exact match “Concept Plus is a technology services company offering deep technical expertise, an experienced team, and a dedication to maximizing business productivity.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	ICS Nett, Inc. ICS	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	51-200	140 contacts →
	Exact match “ICS is a strategically diversified technology solutions company operating in different markets serving both Federal and Commercial clients with innovations that span…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Inalab	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	51-200	91 contacts →
	Exact match “Inalab is a leading IT solutions and strategy consulting firm focused on providing solutions that transform enterprise operations in the government and commercial sectors by…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Inforeliance	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	201-500	70 contacts →
	Exact match “When organizations need to be on time-and on budget-they call InfoReliance.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Luzon Technologies INC	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	51-200	65 contacts →
	Exact match “We RECRUIT, We TRAIN, and We STAFF Transforming Challenges into Opportunities!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Pace Global, A Siemens Business	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	51-200	38 contacts →
	Exact match “Pace Global, a Siemens business, is a leading energy consulting and management company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Intellisoft Technologies	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	20 contacts →
	Exact match “Empowering Innovation with Intellisoft Technologies, Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Vizens Corp	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	51-200	19 contacts →
	Exact match “VIZENS Corp is Software development & services company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Tellenger	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	11-50	13 contacts →
	Exact match “Tellenger specializes in software development, enterprise IT and cloud solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Information Analysis Incorporated	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	11-50	11 contacts →
	Exact match “Tellenger, Inc.(formerly Information Analysis Incorporated) is a wholly owned subsidiary subsidiary of WaveDancer, a publicly traded company (NASDAQ: WAVD), and certified small…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Advance Digital Systems	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	51-200	9 contacts →
	Exact match “Advance Digital Systems (ADS) is a leading provider of information technology and consulting services for federal and commercial clients.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Deci Technology	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “IT consulting company providing cyber security, analytics and data science services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Enegis	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	1-10	8 contacts →
	Exact match “Enegis is an energy consulting firm that focuses on strategy, technology, economics, and project development.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Vanguard Management Solutions, INC	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	11-50	8 contacts →
	Exact match “Vanguard Management Solutions (VMGTS) is a minority-owned cybersecurity and technology firm serving government and commercial organizations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Invex Technology Solutions	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	1-10	6 contacts →
	Exact match “We develop cost-effective innovative consulting and technology solutions to CIO’s, systems engineering and architecture organizations, and implementation teams through dependable…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Emagine It, INC	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	51-200	5 contacts →
	Exact match “Emagine IT is an information technology services and consulting company based in the Washington, DC metropolitan area that specializes in delivering cost conscious, innovative…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Rcsi SBA 8 A Certified Edwosb	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	11-50	5 contacts →
	Exact match “Established in 2011, Ryansh Corporate Solutions, LLC.(RCSI) is an SBA 8(a) Certified and Economically Disadvantaged Women-Owned Small Business (EDWOSB) dedicated to expertly…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Excelsior Consulting Group, LLC	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	11-50	4 contacts →
	Exact match “Excelsior Consulting Group LLC is a Woman and Minority owned SBA 8(m) business with a pending application for SBA 8(a) certification.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Gilmer Vision	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	1-10	3 contacts →
	Exact match “As a privately held company based in Virginia, Gilmer Vision offers regional IT consulting, staffing, and project management services for a variety of different business types.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Voltsit	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	11-50	1 contacts →
	Exact match “Voltsit is a Global Business Consulting company.” Recorded in the RevenueBase company graph · Sep 28, 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 sector IT consultants”. 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 22 of 33 energy sector IT consultants based in Fairfax, United States

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Energy sector IT consultants based in Fairfax, United States at a glance

As of Sep 28, 2026

24.5%Verified-email coverage

39.5Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Fairfax, so it is reported there. Company counts and contact totals on this page are exact for Fairfax, over 33 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 Fairfax, United States whose business descriptions match “energy sector IT consultants” 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 319 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 28, 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 sector IT consultants 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 sector IT consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy sector IT consultants are there based in Fairfax, United States?

RevenueBase identified 33 company matches for energy sector IT consultants associated with Fairfax, 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?

PEG 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 sector IT consultants?

Houston leads the United States with 465 company records, followed by New York (251) and Dallas (139). Fairfax has 33.

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 319 professional contacts with verified work emails tracked across these 33 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 28, 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.