Company lists · Data refreshed September 2026

Top 25 Energy optimization software companies worldwide

Name: Energy optimization software companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 4,298 companies tracked

RevenueBase identified 4,298 energy optimization software companies worldwide as of September 2026 and tracks 61,021 professional contacts across them, including 20,739 with verified work emails. The United States is the largest market and London the largest hub.

This list covers energy optimization software companies worldwide, 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. Country and city lists for energy optimization software companies follow the table.

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

4,298Companies

61,021Contacts tracked

20,739Verified emails

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The 25 largest energy optimization software companies worldwide

Ranked by team size

Top 25 of 4,298 energy optimization software companies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy optimization software companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	British GAS	Indirect evidence	Windsor, United KingdomHQ checked Sep 28, 2026	10001+	9,238 contacts →
	Indirect evidence “Taking care of things.” Source: RevenueBase Database · checked Sep 28, 2026
2	GE Digital	Strong evidence	San Ramon, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,763 contacts →
	Strong evidence “At GE Digital, our focus is clear: delivering software that accelerates a new era of energy.” Source: RevenueBase Database · checked Sep 28, 2026
3	Quorum Software	Strong evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,563 contacts →
	Strong evidence “Quorum Software is a leading provider of energy software worldwide powering growth and profitability for energy businesses by connecting people, workflows, and systems with…” Source: RevenueBase Database · checked Sep 28, 2026
4	Ameresco	Partial evidence	Framingham, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,383 contacts →
	Partial evidence “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Source: RevenueBase Database · checked Sep 28, 2026
5	Arcadia	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	864 contacts →
	Partial evidence “Arcadia is the global utility data and energy solutions platform.” Source: RevenueBase Database · checked Sep 28, 2026
6	KBC A Yokogawa Company	Indirect evidence	Walton-on-thames, United KingdomHQ checked Sep 28, 2026	201-500	658 contacts →
	Indirect evidence “We are passionate about driving sustainable change for our planet.” Source: RevenueBase Database · checked Sep 28, 2026
7	Kaluza	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	595 contacts →
	Partial evidence “Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination.” Source: RevenueBase Database · checked Sep 28, 2026
8	Veolia Industries Global Solutions	Partial evidence	Aubervilliers, FranceHQ checked Sep 28, 2026	1,001-5,000	460 contacts →
	Partial evidence “Veolia Industries Global Solutions est devenu Veolia Energie Performance depuis le 1er juin 2025.” Source: RevenueBase Database · checked Sep 28, 2026
9	Elmeasure	Partial evidence	Bangalore, IndiaHQ checked Sep 28, 2026	501-1,000	446 contacts →
	Partial evidence “Founded in 2004 by a passionate team of entrepreneurs with deep expertise in energy management, Elmeasure began with a bold mission: to help industries, businesses, and…” Source: RevenueBase Database · checked Sep 28, 2026
10	PSI Software	Strong evidence	Berlin, GermanyHQ checked Sep 28, 2026	1,001-5,000	442 contacts →
	Strong evidence “The PSI Group develops software products for optimizing the flow of energy and materials for utilities and industry.” Source: RevenueBase Database · checked Sep 28, 2026
11	Isotrol	Strong evidence	Sevilla, MexicoHQ checked Sep 28, 2026	201-500	398 contacts →
	Strong evidence “Isotrol is the world market leader in energy software solutions and renewable energy plant control solutions used by large energy companies for 4 decades now.” Source: RevenueBase Database · checked Sep 28, 2026
12	Sensorfact	Partial evidence	Utrecht, NetherlandsHQ checked Sep 28, 2026	201-500	390 contacts →
	Partial evidence “We develop products that allow manufacturers to easily monitor energy consumption and gain insight into machine maintenance.” Source: RevenueBase Database · checked Sep 28, 2026
13	Budderfly	Partial evidence	Shelton, CT, United StatesHQ checked Sep 28, 2026	201-500	366 contacts →
	Partial evidence “Budderfly is redefining how energy efficiency, resilience, and grid participation can work together across America’s commercial sector.” Source: RevenueBase Database · checked Sep 28, 2026
14	PCI Energy Solutions	Indirect evidence	Norman, OK, United StatesHQ checked Sep 28, 2026	201-500	346 contacts →
	Indirect evidence “PCIEnergySolutions is a tight-knit team of 300 diligent product experts, engineers, business analysts, and more.” Source: RevenueBase Database · checked Sep 28, 2026
15	Energy Pool	Partial evidence	Le Bourget Du Lac, FranceHQ checked Sep 28, 2026	51-200	300 contacts →
	Partial evidence “At the centre of the smart grid revolution, Energy Pool manages and optimizes complex systems (energy consumption of industrial sites, decentralized production, renewable…” Source: RevenueBase Database · checked Sep 28, 2026
16	Correla	Indirect evidence	Solihull, United KingdomHQ checked Sep 28, 2026	201-500	293 contacts →
	Indirect evidence “Correla exists because we dream of a simpler, greener society powered by our investment in innovation and our passion for customers.” Source: RevenueBase Database · checked Sep 28, 2026
17	Entes Elektronik	Partial evidence	Istanbul, TürkiyeHQ checked Sep 28, 2026	201-500	289 contacts →
	Partial evidence “A World Brand/Pride of Turkey In Energy Quality ENTES is a family that works ardently for energy quality and efficiency in our country, where energy is valuable and overcosting.” Source: RevenueBase Database · checked Sep 28, 2026
18	Cascade Energy	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	201-500	288 contacts →
	Partial evidence “At Cascade Energy, we believe in better.” Source: RevenueBase Database · checked Sep 28, 2026
19	Deode Energia	Partial evidence	Juiz De Fora, BrazilHQ checked Sep 28, 2026	201-500	280 contacts →
	Partial evidence “A DEODE Energia foi fundada em 2012 proveniente da HF Energy.” Source: RevenueBase Database · checked Sep 28, 2026
20	Janitza Electronics Gmbh	Partial evidence	Lahnau, GermanyHQ checked Sep 28, 2026	501-1,000	267 contacts →
	Partial evidence “Janitza energy measurement technology Nowadays, energy management is not only relevant for the environment and for society but is also a critical competitive factor.” Source: RevenueBase Database · checked Sep 28, 2026
21	Electro Industries Gaugetech	Partial evidence	Westbury, NY, United StatesHQ checked Sep 28, 2026	201-500	241 contacts →
	Partial evidence “For over 45 years, Electro Industries/GaugeTech has been a leader in innovation and technological advancements in the areas of energy management and power monitoring.” Source: RevenueBase Database · checked Sep 28, 2026
22	BIA Energy	Partial evidence	Bogotá D.c, ColombiaHQ checked Sep 28, 2026	51-200	226 contacts →
	Partial evidence “Bia Energy es una empresa a la vanguardia de la industria energética.” Source: RevenueBase Database · checked Sep 28, 2026
23	Prime Energy	Partial evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	51-200	225 contacts →
	Partial evidence “Empresa voltada a projetos de Otimização e Eficiêntização no uso da energia elétrica.” Source: RevenueBase Database · checked Sep 28, 2026
24	ANB Systems, LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	51-200	223 contacts →
	Strong evidence “ANB Systems is a leading software provider for the energy industry.” Source: RevenueBase Database · checked Sep 28, 2026
25	Brunata	Indirect evidence	Herlev, DenmarkHQ checked Sep 28, 2026	501-1,000	219 contacts →
	Indirect evidence “Brunata is one of Europe’s most innovative companies in the field of consumption measurement and consumption accounts.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: energy optimization software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names energy optimization software companies.
Partial evidence: Its own public description names part of energy optimization software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy optimization software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 4,298 energy optimization software companies worldwide

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Energy optimization software companies worldwide at a glance

As of Sep 28, 2026

34.0%Verified-email coverage

14.2Average contacts per company

1-10Median size (employees)

1.4%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,454

11-50

1,428

51-200

305

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 optimization software companies, 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.
Coverage: Every country. Country and city lists for energy optimization software companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “energy optimization software companies”. 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 optimization software companies), 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 optimization software companies, and records with no verified work email.
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, 20,739 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.

Energy optimization software companies by location

30 lists · largest first

Every Energy optimization software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 optimization software companies, 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 optimization software companies are there worldwide?

RevenueBase identified 4,298 energy optimization software companies worldwide 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?

British GAS, headquartered in Windsor, tops this list with the largest team on record.

Which country has the most energy optimization software companies?

The United States leads with 704 companies, followed by Spain (261) and the United Kingdom (247). Every energy optimization software companies list by country and city is linked on this page.

Which city has the most energy optimization software companies?

London leads with 62 headquartered companies, followed by Madrid (52) and Paris (35).

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 20,739 verified decision-maker contacts tracked across these 4,298 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.