Company lists · Data refreshed September 2026

Top 13 Energy sector accounting firms based in New York, United States

RevenueBase identified 40 energy sector accounting firms headquartered in New York, United States as of September 2026 and tracks 258 professional contacts across them, including 111 with verified work emails. Across the United States, Houston is the largest hub for this category (97 companies); New York follows with 40.

This list covers energy sector accounting firms headquartered in New York, 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 28, 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 28, 2026 86% judged on-target in blind review
40Companies
258Contacts tracked
111Verified emails
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The 13 largest energy sector accounting firms based in New York, United States

Ranked by team size
Top 13 of 40 energy sector accounting firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy sector accounting 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceNew York, United StatesHQ checked Sep 28, 202611-5038 contacts →

Indirect evidence

“Hertz Herson believes in the value of building long-term, trusted relationships.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 202651-20026 contacts →

Partial evidence

“ISOS Group is now part of Environ Energy, a leader in accelerating global sustainable energy transformation for more than 30 years.”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-106 contacts →

Partial evidence

“Triple Net Energy Advisory Services (TNE) is one of the most experienced energy engineering and advanced metering infrastructure technologies firms in the Tri-State area with a…”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-506 contacts →

Partial evidence

“Global Energy, LLC is a premier energy services and expense advisory firm.”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-106 contacts →

Partial evidence

“Max Profit Advisors is an experienced strategic financial consultancy providing accounting, reporting and compliance services, plus data analytics and growth planning for the…”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-105 contacts →

Partial evidence

“KO2 Consulting provides strategic energy consultant services for government agencies, non- profit organizations and private companies to achieve organizational energy performance…”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-105 contacts →

Partial evidence

“Financial advisory for energy and infrastructure - Sell-side and buy-side advisory for US and international institutional and strategic investors - Capital advisory and raising…”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-105 contacts →

Indirect evidence

“When we take on a client, we provide them with a full-service, dedicated to their unique “big picture.” With expertise and a genuine love and respect for numbers, we take it all…”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-105 contacts →

Partial evidence

“Slattery Energy Consulting Group leverages over three decades of experience to offer intelligent energy bill auditing, competitive natural gas and electricity procurement, energy…”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-505 contacts →

Indirect evidence

“Ernof is encouraging businesses to rethink how they see the accountancy function at their organization.”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-104 contacts →

Partial evidence

“BBH Advisory is a seasoned team of professionals with deep accounting, tax, and finance expertise.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 202611-503 contacts →

Partial evidence

“We are an accounting services company with more than 25 years of experience where we help our clients to achieve an adequate management in the rigorous fulfillment of their tax…”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

“18th Square provides valuation and consulting services in both investment advisory and legal damages estimation.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 13 of 40 energy sector accounting firms based in New York, United States

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Energy sector accounting firms based in New York, United States at a glance

As of Sep 28, 2026
43.0%Verified-email coverage
6.5Average contacts per company
1-10Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
10
51-200
4

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 40 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 energy sector accounting 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 New York, United States whose own description of what they do matches “energy sector accounting 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 energy sector accounting 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 energy sector accounting firms, and records with no verified work email. Companies headquartered outside New York 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, 111 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 28, 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 energy sector accounting 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 energy sector accounting firms are there based in New York, United States?

RevenueBase identified 40 energy sector accounting firms headquartered in New York, 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?

Hertz Herson CPA LLP, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most energy sector accounting firms?

Houston leads the United States with 97 headquartered companies, followed by New York (40) and Dallas (29).

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 111 verified decision-maker contacts tracked across these 40 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 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 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.