Company lists · Data refreshed September 2026

Top 25 Energy retailer software worldwide

RevenueBase identified 2,039 energy retailer software worldwide as of September 2026 and tracks 68,920 professional contacts across them, including 24,829 with verified work emails and 6,795 with mobile numbers. Germany is the largest market and Madrid the largest hub.

This list covers energy retailer software 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 2, 2026. Country and city lists for energy retailer software 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review
2,039Companies
68,920Contacts tracked
24,829Verified emails
6,795Mobile numbers
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The 25 largest energy retailer software worldwide

Ranked by team size
Top 25 of 2,039 energy retailer software worldwide, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to energy retailer software: 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 evidenceStaines, GB10001+9,287 contacts →

Indirect evidence

“Taking care of things.”

Source: RevenueBase Database · checked Sep 2, 2026
2Partial evidenceWindsor, GB10001+4,589 contacts →

Partial evidence

“Centrica is an international energy services and solutions company, founded on a 200-year heritage of serving customers in homes and businesses.”

Source: RevenueBase Database · checked Sep 2, 2026
3Strong evidenceSan Ramon, CA, US1,001-5,0001,773 contacts →

Strong evidence

“At GE Digital, our focus is clear: delivering software that accelerates a new era of energy.”

Source: RevenueBase Database · checked Sep 2, 2026
4Strong evidenceHouston, TX, US1,001-5,0001,640 contacts →

Strong evidence

“Established in 1997, Just Energy has been a leading retail energy provider serving markets across the United States and Canada.”

Source: RevenueBase Database · checked Sep 2, 2026
5Strong evidenceMorwell, AU501-1,0001,201 contacts →

Strong evidence

“Alinta Energy is one of Australia’s largest energy retailers, generators, investors and developers.”

Source: RevenueBase Database · checked Sep 2, 2026
6Partial evidenceMunich, DE5,001-10,0001,013 contacts →

Partial evidence

“Die E.ON Energie Deutschland GmbH ist ein bundesweit führendes Energieunternehmen und Dachgesellschaft des E.ON Vertriebs in Deutschland.”

Source: RevenueBase Database · checked Sep 2, 2026
7Strong evidencePerth, AU501-1,000985 contacts →

Strong evidence

“As Western Australia’s leading energy generator and retailer, Synergy is an essential and trusted provider of electricity and gas.”

Source: RevenueBase Database · checked Sep 2, 2026
8Partial evidenceWashington, DC, US501-1,000869 contacts →

Partial evidence

“Arcadia is the global utility data and energy solutions platform.”

Source: RevenueBase Database · checked Sep 2, 2026
9Partial evidenceBrigalow, AU501-1,000725 contacts →

Partial evidence

“CS Energy is a proudly Queensland-owned and based energy company that provides power to some of our state’s biggest industries and employers.”

Source: RevenueBase Database · checked Sep 2, 2026
10Indirect evidenceManchester, GB1,001-5,000701 contacts →

Indirect evidence

“We are Calisen.”

Source: RevenueBase Database · checked Sep 2, 2026
11Strong evidenceHouston, TX, US201-500693 contacts →

Strong evidence

“VertexOne is the leading provider of cloud-based SaaS software powering the next generation of customer experience for utilities, energy retailers, and energy transition providers.”

Source: RevenueBase Database · checked Sep 2, 2026
12Indirect evidenceGrosseto, IT201-500654 contacts →

Indirect evidence

“Enegan offre soluzioni personalizzate per le aziende abbinando alla fornitura di elettricità, gas e telecomunicazioni una vasta gamma di prodotti e servizi ad alto valore…”

Source: RevenueBase Database · checked Sep 2, 2026
13Partial evidenceStamford, CT, US501-1,000642 contacts →

Partial evidence

“We are a tech-driven energy trading company that trades power and gas across +40 markets.”

Source: RevenueBase Database · checked Sep 2, 2026
14Indirect evidenceMilano, IT201-500607 contacts →

Indirect evidence

“Da dicembre 2025, abbiamo integrato EF Solare, il primo produttore fotovoltaico italiano.”

Source: RevenueBase Database · checked Sep 2, 2026
15Partial evidenceLondon, GB501-1,000601 contacts →

Partial evidence

“Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination.”

Source: RevenueBase Database · checked Sep 2, 2026
16Indirect evidenceOslo, NO501-1,000564 contacts →

Indirect evidence

“Every megawatt matters.”

Source: RevenueBase Database · checked Sep 2, 2026
17Indirect evidenceNew Delhi, IndiaHQ checked Sep 2, 2026501-1,000556 contacts →

Indirect evidence

“Founded in 2011, Kimbal Private Limited (formerly Sinhal Udyog Private Limited) is an ISO 9001:2015 certified fastest emerging Indian startup building breakthrough technologies…”

Source: RevenueBase Database · checked Sep 2, 2026
18Partial evidenceMilano, IT501-1,000509 contacts →

Partial evidence

“Efficienza energetica e mobilità elettrica per le PMI.”

Source: RevenueBase Database · checked Sep 2, 2026
19Partial evidenceBoulder, CO, US501-1,000484 contacts →

Partial evidence

“Uplight is a clean energy technology company that unlocks grid capacity by activating customers and their connected devices to generate, shift, and save energy.”

Source: RevenueBase Database · checked Sep 2, 2026
20Strong evidenceSan Diego, CA, US201-500467 contacts →

Strong evidence

“Calpine Solutions is a retail energy provider with a robust suite of customized products, analytics, and data management solutions to turn a corporate electricity expense into a…”

Source: RevenueBase Database · checked Sep 2, 2026
21Strong evidenceBerlin, DE1,001-5,000443 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 2, 2026
22Partial evidenceBerlin, DE501-1,000432 contacts →

Partial evidence

“At Stem, we’re reimagining technology to drive the energy transition.”

Source: RevenueBase Database · checked Sep 2, 2026
23Strong evidenceSevilla, ES201-500396 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 2, 2026
24Partial evidenceCary, NC, US201-500385 contacts →

Partial evidence

“Trilliant® empowers utilities and partners to accelerate the energy transition through a proven, modular, multi-technology communications platform that delivers secure, scalable…”

Source: RevenueBase Database · checked Sep 2, 2026
25Indirect evidenceNorwell, MA, US501-1,000380 contacts →

Indirect evidence

“We're ESG - and we put the power of data in your hands.”

Source: RevenueBase Database · checked Sep 2, 2026

Showing 25 of 2,039 energy retailer software worldwide

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Energy retailer software worldwide at a glance

As of Sep 2, 2026
36.0%Verified-email coverage
9.9%Mobile-number coverage
33.8Average contacts per company
11-50Median size (employees)
2.6%Largest-city concentration · Madrid
Sep 2, 2026Page data refreshed

Companies by employee count

1-10
831
11-50
780
51-200
285
201-500
67
501-1,000
23
1,001-5,000
21
5,001-10,000
3
10001+
3

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 retailer software, 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
21 countries, largest first: Germany, the United States, Spain, the United Kingdom, Italy, Australia, the Netherlands, Brazil, Türkiye, France and 11 more. Country and city lists for energy retailer software are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “energy retailer software”. 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 retailer software), 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 retailer software, 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, 24,829 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 between September 2, 2026 and September 14, 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 retailer software by location

25 lists · largest first

Every Energy retailer software 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 retailer software, 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 retailer software are there worldwide?

RevenueBase identified 2,039 energy retailer software 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 Staines, tops this list with the largest team on record.

Which country has the most energy retailer software?

Germany leads with 315 companies, followed by the United States (294) and Spain (202). Every energy retailer software list by country and city is linked on this page.

Which city has the most energy retailer software?

Madrid leads with 52 headquartered companies, followed by London (40) and Berlin (31).

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 24,829 verified decision-maker contacts tracked across these 2,039 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 2, 2026 and September 14, 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.