Company lists · Data refreshed September 2026

Top 25 Power systems application developers worldwide

Name: Power systems application developers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 960 companies tracked

RevenueBase identified 960 power systems application developers worldwide as of September 2026 and tracks 72,029 professional contacts across them, including 28,695 with verified work emails. The United States is the largest market and London the largest hub.

This list covers power systems application developers 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 20, 2026. Country and city lists for power systems application developers 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 20, 2026 86% judged on-target in blind review

960Companies

72,029Contacts tracked

28,695Verified emails

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The 25 largest power systems application developers worldwide

Ranked by team size

Top 25 of 960 power systems application developers worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to power systems application developers: 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	Hitachi Energy	Partial evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	10001+	30,256 contacts →
	Partial evidence “Hitachi Energy is a global technology leader in electrification, powering a sustainable energy future with innovative power grid technologies with digital at the core.” Source: RevenueBase Database · checked Sep 20, 2026
2	Toshiba	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 20, 2026	n/a	5,984 contacts →
	Indirect evidence “For 150 years, Toshiba has been engineering solutions that drive progress, empower industries, and create a more resilient future.” Source: RevenueBase Database · checked Sep 20, 2026
3	Landis GYR	Indirect evidence	Cham, SwitzerlandHQ checked Sep 20, 2026	5,001-10,000	4,252 contacts →
	Indirect evidence “Landis+Gyr is a global energy technology leader delivering intelligent solutions that connect devices, data, and decisions across the grid.” Source: RevenueBase Database · checked Sep 20, 2026
4	Areva T&d	Partial evidence	92084 Paris - La Défense, FranceHQ checked Sep 20, 2026	10001+	2,012 contacts →
	Partial evidence “One of the top three global players in the transmission and distribution of energy, AREVA T&D offers solutions to bring electricity from the source onto the power network.” Source: RevenueBase Database · checked Sep 20, 2026
5	GE Digital	Indirect evidence	San Ramon, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,763 contacts →
	Indirect evidence “At GE Digital, our focus is clear: delivering software that accelerates a new era of energy.” Source: RevenueBase Database · checked Sep 20, 2026
6	Quorum Software	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,563 contacts →
	Partial 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 20, 2026
7	Maschinenfabrik Reinhausen	Partial evidence	Regensburg, GermanyHQ checked Sep 20, 2026	1,001-5,000	1,052 contacts →
	Partial evidence “MR: THE POWER BEHIND POWER We at MR have been writing our success story in the world of energy technology for more than 150 years.” Source: RevenueBase Database · checked Sep 20, 2026
8	Energy Exemplar	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 20, 2026	501-1,000	699 contacts →
	Indirect evidence “In an era where the world is rapidly advancing towards a cleaner future through decarbonization, Energy Exemplar’s mission lies in ‘Empowering Transformative Energy Decisions’🪫…” Source: RevenueBase Database · checked Sep 20, 2026
9	ALFEN	Partial evidence	Almere, NetherlandsHQ checked Sep 20, 2026	501-1,000	678 contacts →
	Partial evidence “With transformer substations, energy storage systems, charging stations for electric vehicles and a diverse portfolio of other products and services, Alfen has a central and…” Source: RevenueBase Database · checked Sep 20, 2026
10	Electric Power Engineers	Partial evidence	Austin, TX, United StatesHQ checked Sep 20, 2026	501-1,000	630 contacts →
	Partial evidence “Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.” Source: RevenueBase Database · checked Sep 20, 2026
11	UDC	Strong evidence	Englewood, CO, United StatesHQ checked Sep 20, 2026	501-1,000	537 contacts →
	Strong evidence “UDC has developed deep expertise and offers services that enable digital utilities and energy delivery resource management through fully integrated enterprise systems.” Source: RevenueBase Database · checked Sep 20, 2026
12	Etap Software	Partial evidence	Irvine, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	534 contacts →
	Partial evidence “Optimize, simulate, and control electrical systems with confidence across utilities, infrastructure, manufacturing, and building sectors.” Source: RevenueBase Database · checked Sep 20, 2026
13	PSI Software	Indirect evidence	Berlin, GermanyHQ checked Sep 20, 2026	1,001-5,000	442 contacts →
	Indirect evidence “The PSI Group develops software products for optimizing the flow of energy and materials for utilities and industry.” Source: RevenueBase Database · checked Sep 20, 2026
14	Open Systems International	Indirect evidence	Bedford, MA, United StatesHQ checked Sep 20, 2026	1,001-5,000	422 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
15	Isotrol	Indirect evidence	Sevilla, MexicoHQ checked Sep 20, 2026	201-500	398 contacts →
	Indirect 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 20, 2026
16	Terranova Software	Indirect evidence	Sesto Fiorentino, ItalyHQ checked Sep 20, 2026	201-500	363 contacts →
	Indirect evidence “Since 2001 Terranova has gone on to become a leading software supplier into the utility sector.” Source: RevenueBase Database · checked Sep 20, 2026
17	PCI Energy Solutions	Indirect evidence	Norman, OK, United StatesHQ checked Sep 20, 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 20, 2026
18	EA Technology	Indirect evidence	Chester, United KingdomHQ checked Sep 20, 2026	201-500	317 contacts →
	Indirect evidence “EA Technology provide innovative solutions for smarter planning, operations and investment decisions across electrical networks globally.” Source: RevenueBase Database · checked Sep 20, 2026
19	Energy Pool	Partial evidence	Le Bourget Du Lac, FranceHQ checked Sep 20, 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 20, 2026
20	Correla	Indirect evidence	Solihull, United KingdomHQ checked Sep 20, 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 20, 2026
21	Gridspertise	Indirect evidence	Rome, ItalyHQ checked Sep 20, 2026	201-500	291 contacts →
	Indirect evidence “The partner of choice for DSOs worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
22	Automa	Indirect evidence	Jundiaí, BrazilHQ checked Sep 20, 2026	201-500	291 contacts →
	Indirect evidence “A Automa, a DNV company, é referência em tecnologias para o setor de energia, com foco em controle, inteligência operacional e eficiência.” Source: RevenueBase Database · checked Sep 20, 2026
23	Power Research And Development Consultants PVT LTD	Strong evidence	Bangalore, IndiaHQ checked Sep 20, 2026	201-500	268 contacts →
	Strong evidence “Power Research & Development Consultants Private Limited, Bengaluru, India has its core competence in the area of power system consulting, power system studies, analysis, design…” Source: RevenueBase Database · checked Sep 20, 2026
24	Schleupen SE	Indirect evidence	Ettlingen, GermanyHQ checked Sep 20, 2026	501-1,000	253 contacts →
	Indirect evidence “With around 450 employees at five national locations, Schleupen SE is one of the leading innovative software manufacturers in the fields of energy and water management (EWW) as…” Source: RevenueBase Database · checked Sep 20, 2026
25	Reivax Automação E Controle	Strong evidence	Florianópolis, BrazilHQ checked Sep 20, 2026	51-200	223 contacts →
	Strong evidence “REIVAX started its activities in April, 1987, and took very little time to establish itself as one of the greatest companies in systems and solutions for power generation control.” Source: RevenueBase Database · checked Sep 20, 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: power systems application developers. 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 power systems application developers.
Partial evidence: Its own public description names part of power systems application developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power systems application developers. 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 960 power systems application developers worldwide

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Power systems application developers worldwide at a glance

As of Sep 20, 2026

39.8%Verified-email coverage

75.0Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

388

11-50

361

51-200

130

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 power systems application developers, 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 power systems application developers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “power systems application developers”. 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 power systems application developers), 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 power systems application developers, 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, 28,695 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 20, 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.

Power systems application developers by location

9 lists · largest first

Every Power systems application developers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 power systems application developers, 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 power systems application developers are there worldwide?

RevenueBase identified 960 power systems application developers 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?

Hitachi Energy, headquartered in Zurich, tops this list with the largest team on record.

Which country has the most power systems application developers?

The United States leads with 174 companies, followed by Germany (88) and Brazil (37). Every power systems application developers list by country and city is linked on this page.

Which city has the most power systems application developers?

London leads with 11 headquartered companies, followed by Berlin (10) and Sao Paulo (8).

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 28,695 verified decision-maker contacts tracked across these 960 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 20, 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.