Company lists · Data refreshed October 2026

Top 17 Energy infrastructure management companies based in Japan

RevenueBase identified 59 company matches for energy infrastructure management companies associated with Japan as of October 2026 and tracks 1,031 professional contacts across them, including 90 with verified work emails. Jing is the largest hub.

This list covers company matches for energy infrastructure management companies associated with Japan, 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
59Companies
1,031Contacts tracked
90Verified emails
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The 17 largest energy infrastructure management companies based in Japan

Ranked by team size
Top 17 of 59 company matches for energy infrastructure management companies based in Japan, 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 match千代田区, JapanHQ recorded Oct 12, 202610001+435 contacts →

Exact match

“TEPCO - Tokyo Electric Power Company is Japan's largest power company group and committed to delivering safe and reliable power across Tokyo, Yokohama, and surrounding area.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2Exact match港区, JapanHQ recorded Oct 12, 202651-20082 contacts →

Exact match

“ENECHANGE is an energy technology company listed on the TSE Growth Market, founded in 2015.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3Exact matchHigashi-ku, JapanHQ recorded Oct 12, 2026n/a78 contacts →

Exact match

“Electric utility and related enterprises, Gas supply and thermal storage brokerage, On-site energy business, Overseas consulting and investment, Real estate management service, IT…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4Exact match中央区, JapanHQ recorded Oct 12, 2026201-50057 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5Exact match福岡市 中央区, JapanHQ recorded Oct 12, 202611-5028 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6Exact match港区, JapanHQ recorded Oct 12, 202651-20025 contacts →

Exact match

“GPSS Engineering is an EPC company, specializing in sustainable energy engineering.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7Exact match大阪市西区, JapanHQ recorded Oct 12, 20261,001-5,00022 contacts →

Exact match

“Sumitomo Densetsu Co, Ltd.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8Exact match港区, JapanHQ recorded Oct 12, 20261,001-5,00022 contacts →

Exact match

“t\t\tLNG\t\t\t”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9Exact match港区, JapanHQ recorded Oct 12, 202611-5011 contacts →

Exact match

“Greenphard Energy’s Business Greenphard Energy is a fast-growing startup based in Japan, building the next generation of energy management solutions for industrial and commercial…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10Exact matchBunkyo, JapanHQ recorded Oct 12, 202651-2009 contacts →

Exact match

“With our energy storage solutions and energy management systems, we provide services to large scale power consumers to reduce fuel and carbon emissions, monetise existing assets…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11Exact matchMinato-ku, JapanHQ recorded Oct 12, 202651-2004 contacts →

Exact match

“Quantum Group is a company in the renewable energy industry (wind, solar, bioenergy, micro hydraulic) providing project development, financing, Engineering, EPC Contracting and…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12Exact match港区, JapanHQ recorded Oct 12, 20261-104 contacts →

Exact match

“PPA Ene Buyer is an energy management services company that works on behalf of business customers to navigate complex energy markets to source economical electricity supply, net…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13Exact match大阪市淀川区, JapanHQ recorded Oct 12, 2026201-5003 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14Exact match千代田区, JapanHQ recorded Oct 12, 202611-502 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15Exact match福岡市 中央区, JapanHQ recorded Oct 12, 202651-2001 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16Exact matchTokyo, JapanHQ recorded Oct 12, 202611-501 contacts →

Exact match

“With over 10 years of experience across all of Japan, and an O&M local track record of 350 MWp, Saferay Services is under the umbrella of the global IPP and renewable energy…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17Exact matchJapanHQ recorded Oct 12, 202611-501 contacts →

Exact match

Recorded description not available.

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

Showing 17 of 59 energy infrastructure management companies based in Japan

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Energy infrastructure management companies based in Japan at a glance

As of Oct 12, 2026
8.7%Verified-email coverage
17.5Average contacts per company
11-50Median size (employees)
13.6%Largest-city concentration · Jing
Oct 12, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
16
51-200
13
201-500
5
501-1,000
2
1,001-5,000
5
10001+
3

Email recency for this list is measured worldwide rather than for Japan, so it is reported there. Company counts and contact totals on this page are exact for Japan, over 59 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 Japan whose business descriptions match “energy infrastructure management companies” 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 90 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 infrastructure management companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy infrastructure management companies are there based in Japan?

RevenueBase identified 59 company matches for energy infrastructure management companies associated with Japan 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?

TEPCO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most energy infrastructure management companies?

Jing leads with 8 company records, followed by Xian (4) and Tokyo (2).

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 90 professional contacts with verified work emails tracked across these 59 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.