Company lists · Data refreshed September 2026

Top 25 Energy infrastructure consulting firms based in Washington, United States

Name: Energy infrastructure consulting firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 64 companies tracked

RevenueBase identified 64 company matches for energy infrastructure consulting firms associated with Washington, United States as of September 2026 and tracks 882 professional contacts across them, including 488 with verified work emails. Across the United States, Houston is the largest hub for this category (513 companies); Washington has 64.

This list covers company matches for energy infrastructure consulting firms associated with Washington, 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 21, 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 21, 2026 How this list was built

64Companies

882Contacts tracked

488Verified emails

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The 25 largest energy infrastructure consulting firms based in Washington, United States

Ranked by team size

Top 25 of 64 company matches for energy infrastructure consulting firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Synergy Consulting, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	434 contacts →
	Exact match “Synergy Consulting is Global Leader in Financial and Corporate Advisory.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Astris Finance, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	74 contacts →
	Exact match “Founded in Astris Finance, a Colliers company, is an independent financial advisory firm specialized in the Infrastructure and Energy (I&E) sectors with an exceptional track…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Converge Strategies, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	34 contacts →
	Exact match “We are experts working at the intersection of energy resilience and national security.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Rapidan Energy Group	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	25 contacts →
	Exact match “Rapidan Energy Group provides differentiated and actionable insights on energy markets, policy, and geopolitics.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	North Arrow, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	22 contacts →
	Exact match “DUNS Number: 08-001-8268 CAGE Code: 7GN69 SBA Certified Small Business District of Columbia Certified Business Enterprise (CBE) Metropolitan Washington Airports Authority Local…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	ARBO	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	20 contacts →
	Exact match “Our mission is to transform and translate regulatory data and actions into business intelligence that drives development and commercial decisions to help American industry sustain…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Interagency INC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	19 contacts →
	Exact match “InterAgency provides preconstruction consulting for the Washington Metro Area’s most complex and challenging infrastructure projects.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Grid Strategies LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	17 contacts →
	Exact match “Grid Strategies LLC is a power sector consulting firm helping clients understand the opportunities and barriers to integrating clean energy into the electric grid.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Rock Creek Energy Group, LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	17 contacts →
	Exact match “Rock Creek Energy Group is a group of diverse and like-minded professionals with a shared passion – Energy.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	PAN Services DC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1-10	17 contacts →
	Exact match “Pan Services is an International Full-Service Infrastructure Development and Management Advisory services firm offering Design, Engineering, Construction, Consulting and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Numark Associates, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	15 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Sustainable Capital Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	14 contacts →
	Exact match “Sustainable Capital Advisors (SCA) is a strategy consulting and financial advisory firm focused on delivering innovative capital solutions for the sustainable infrastructure…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Rebel North America	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	12 contacts →
	Exact match “As one of the leading U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Taylor-Dejongh	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	12 contacts →
	Exact match “Taylor-DeJongh (TDJ) is an international financial advisory firm based in Washington, D.C.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	S2 Strategies	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	11 contacts →
	Exact match “S2 Strategies is an energy advisory firm founded in 2023 by Sam Ricketts and Shara Mohtadi.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Global Connective Center, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	10 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Enverra	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	9 contacts →
	Exact match “At Enverra, we are driven by impact, directing capital where it has the greatest effect, standing behind people with bold ideas and promoting technologies that address global…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Green Strategies, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1-10	8 contacts →
	Exact match “Green Strategies Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Partnership International, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	7 contacts →
	Exact match “Partnership International, Inc, founded in 1990, is an international consulting firm that provides socio-economic, regulatory, institutional, technical, commercial and financial…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Transgen Energy, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	6 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Oasis Energy Partners	Exact match	Washington, United StatesHQ recorded Sep 21, 2026	1-10	5 contacts →
	Exact match “OASIS Energy Partners is a full-service consulting and advisory firm at the intersection of energy, environment, and climate.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	GQS NEW Energy Strategies	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1-10	5 contacts →
	Exact match “Our team leverages deep industry expertise to help you navigate regulatory shifts and seize new opportunities in clean energy.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Lightbox Energy	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1-10	4 contacts →
	Exact match “Lightbox Energy is an energy and sustainability program management firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Range Renewables	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1-10	4 contacts →
	Exact match “Range Renewable Advisors (“Range” or “Range Renewables”) is a renewable energy advisory firm focused on helping clients tackle complex financial solutions in development, project…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Baitco LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	3 contacts →
	Exact match “BAITCO is a U.S-based Prime Systems Integrator delivering advanced energy, infrastructure, and intelligent technology solutions for mission-critical commercial, institutional, and…” Recorded in the RevenueBase company graph · Sep 21, 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 infrastructure consulting firms”. 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 25 of 64 energy infrastructure consulting firms based in Washington, United States

See the full list, filter by size, metro and specialty, and access 488 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy infrastructure consulting firms based in Washington, United States at a glance

As of Sep 21, 2026

55.3%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 64 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 Washington, United States whose business descriptions match “energy infrastructure consulting firms” 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 488 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 21, 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 infrastructure consulting firms 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 infrastructure consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy infrastructure consulting firms are there based in Washington, United States?

RevenueBase identified 64 company matches for energy infrastructure consulting firms associated with Washington, 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?

Synergy Consulting, 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 infrastructure consulting firms?

Houston leads the United States with 513 company records, followed by New York (174) and Denver (102). Washington has 64.

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 488 professional contacts with verified work emails tracked across these 64 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 21, 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.