Company lists · Data refreshed October 2026

Top 25 Energy lobbying firms based in the United States

RevenueBase identified 918 company matches for energy lobbying firms associated with the United States as of October 2026 and tracks 10,060 professional contacts across them, including 4,990 with verified work emails. Washington is the largest hub.

This list covers company matches for energy lobbying firms associated with the 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 October 12, 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 Oct 12, 2026 How this list was built
918Companies
10,060Contacts tracked
4,990Verified emails
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The 25 largest energy lobbying firms based in the United States

Ranked by team size
Top 25 of 918 company matches for energy lobbying firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPittsburgh, PA, United StatesHQ recorded Oct 12, 2026501-1,0001,228 contacts →

Exact match

“Buchanan Ingersoll & Rooney is a national law firm with a proven reputation for providing progressive, industry-leading legal, business, regulatory and government relations advice…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2Exact matchBridgeport, WV, United StatesHQ recorded Oct 12, 2026501-1,000765 contacts →

Exact match

“Steptoe & Johnson PLLC is a law firm nationally recognized for its strengths in energy law with more than a century of know-how in the areas of business, employment, and…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3Exact matchWashington, DC, United StatesHQ recorded Oct 12, 2026201-500263 contacts →

Exact match

“Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202651-200178 contacts →

Exact match

“Van Ness Feldman is a nationally recognized mid-sized law firm specializing in the areas of energy, environment, and natural resources law and policy, with offices in Washington…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202651-200173 contacts →

Exact match

“Invariant is a bipartisan business advisory firm, providing strategic advice to companies, trade associations, non-profits, and individuals on how to make Washington work for them.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6Exact matchPlano, TX, United StatesHQ recorded Oct 12, 2026n/a166 contacts →

Exact match

“We're your advocates.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, CA, United StatesHQ recorded Oct 12, 202651-200163 contacts →

Exact match

“Energy.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8Exact matchColumbia, MD, United StatesHQ recorded Oct 12, 202651-200156 contacts →

Exact match

“Energetics is a full-service technical and management consulting company specializing in energy (specifically energy modernization, efficiency, and clean energy) and…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9Exact matchArlington, VA, United StatesHQ recorded Oct 12, 202651-200104 contacts →

Exact match

“MultiState is a full-service state and local government relations company.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202651-20098 contacts →

Exact match

“Monument Advocacy is a bipartisan firm that offers government relations, public affairs, strategic and crisis communications, and digital services.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202651-20080 contacts →

Exact match

“At Cassidy and Associates, we make Washington work for you.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12Exact matchBaltimore, MD, United StatesHQ recorded Oct 12, 202611-5078 contacts →

Exact match

“Since 2010, MD Energy Advisors (MDEA) has been infusing art into energy by creating a dynamic customer experience that makes energy choices simple for everyone.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202651-20065 contacts →

Exact match

“Established in 2010, Thorn Run Partners is a leading Washington, DC-based government affairs firm whose members are Capitol Hill veterans with over a century’s experience in…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14Exact matchDenver, CO, United StatesHQ recorded Oct 12, 202651-20064 contacts →

Exact match

“At Beatty & Wozniak, we focus on energy and natural resources law.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15Exact matchIndianapolis, IN, United StatesHQ recorded Oct 12, 202611-5064 contacts →

Exact match

“Bose Public Affairs Group successfully advocates for our clients’ legislative, regulatory, procurement, political and communication interests with offices in Indianapolis and…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16Exact matchCambridge, MA, United StatesHQ recorded Oct 12, 202611-5063 contacts →

Exact match

“Synapse Energy Economics, Inc.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Oct 12, 202611-5063 contacts →

Exact match

“Toeppich and Associates is one of the most recognized firms in the oil and gas industry, with attorneys practicing in all areas of oil and gas law, including title examination…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202611-5060 contacts →

Exact match

“Capitol Counsel, LLC is a full service government relations firm providing political analysis, strategic advice and advocacy services.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19Exact matchWaltham, MA, United StatesHQ recorded Oct 12, 202651-20058 contacts →

Exact match

“Emerging Questions.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20Exact matchSan Rafael, CA, United StatesHQ recorded Oct 12, 202611-5056 contacts →

Exact match

“Nielsen Merksamer is one of the preeminent political and government law and lobbying firms in the country, serving a national clientele that includes leading businesses…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202611-5052 contacts →

Exact match

“CGCN Group is an integrated advocacy and strategic communications firm that specializes in helping Fortune 500 companies, non-profits, and trade associations navigate complex…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22Exact matchClearwater, FL, United StatesHQ recorded Oct 12, 202651-20052 contacts →

Exact match

“Founded in 1998, Energy Professionals is one of North America's leading Energy Advisories working with commercial customers to reduce and control their energy budgets.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23Exact matchNew York, NY, United StatesHQ recorded Oct 12, 202611-5052 contacts →

Exact match

“Described by the New York Times as “a new breed of consultants,” the Parkside Group is a leading public affairs firm.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202651-20052 contacts →

Exact match

“Carmen Group is Washington’s leading government affairs consulting firm.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25Exact matchAlbany, NY, United StatesHQ recorded Oct 12, 202611-5051 contacts →

Exact match

“Smart strategy begins with being well informed.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

Showing 25 of 918 energy lobbying firms based in the United States

See the full list, filter by size, metro and specialty, and access 4,990 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy lobbying firms based in the United States at a glance

As of Oct 12, 2026
49.6%Verified-email coverage
11.0Average contacts per company
1-10Median size (employees)
25.4%Largest-city concentration · Washington
Oct 12, 2026Page data refreshed

Companies by employee count

1-10
700
11-50
189
51-200
22
201-500
1
501-1,000
2

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 918 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 the United States whose business descriptions match “energy lobbying 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 4,990 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 October 12, 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.

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 lobbying firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy lobbying firms are there based in the United States?

RevenueBase identified 918 company matches for energy lobbying firms associated with the United States as of October 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?

Buchanan Ingersoll & Rooney PC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most energy lobbying firms?

Washington leads with 233 company records, followed by Austin (41) and Sacramento (37).

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 4,990 professional contacts with verified work emails tracked across these 918 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 October 12, 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.