Company lists · Data refreshed September 2026

Top 25 Energy maintenance service providers based in South Africa

Name: Energy maintenance service providers based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 244 companies tracked

RevenueBase identified 244 energy maintenance service providers headquartered in South Africa as of September 2026 and tracks 3,199 professional contacts across them, including 794 with verified work emails. Johannesburg is the largest hub.

This list covers energy maintenance service providers headquartered in South Africa, 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 16, 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 16, 2026 86% judged on-target in blind review

244Companies

3,199Contacts tracked

794Verified emails

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The 25 largest energy maintenance service providers based in South Africa

Ranked by team size

Top 25 of 244 energy maintenance service providers based in South Africa, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy maintenance service providers: 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	Steinmüller Africa	Partial evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	501-1,000	419 contacts →
	Partial evidence “Steinmuller Africa a member of the Bilfinger group of companies offering a wide range of engineering, manufacturing, pre-fabrication, construction and maintenance services for the…” Source: RevenueBase Database · checked Sep 16, 2026
2	Diesel Electric Services PTY LTD	Partial evidence	Booysens, South AfricaHQ checked Sep 16, 2026	501-1,000	207 contacts →
	Partial evidence “Since 1993 Diesel Electric Services (PTY) Ltd has specialised in the design, manufacture, delivery, installation, commissioning and maintenance of turnkey power solutions to suit…” Source: RevenueBase Database · checked Sep 16, 2026
3	CBZ Solutions PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	51-200	195 contacts →
	Partial evidence “CBZ Solutions (Pty) Ltd, is a supplier of systems and solutions for the energy services market.” Source: RevenueBase Database · checked Sep 16, 2026
4	Tractionel Enterprise	Indirect evidence	Roodepoort, South AfricaHQ checked Sep 16, 2026	501-1,000	163 contacts →
	Indirect evidence “Established in 1982, Tractionel Enterprise is a 100% Black-Owned Level 1 Electrical Construction Company with an outstanding track record in the design, supply, construction and…” Source: RevenueBase Database · checked Sep 16, 2026
5	Usp&e Global	Indirect evidence	Bryanston, South AfricaHQ checked Sep 16, 2026	51-200	133 contacts →
	Indirect evidence “For more than 22 years, USP & E has helped clients worldwide overcome the risks of downtime, delays, and unreliable power.” Source: RevenueBase Database · checked Sep 16, 2026
6	AES Associated Energy Services PTY LTD	Partial evidence	Cape Town, South AfricaHQ checked Sep 16, 2026	201-500	128 contacts →
	Partial evidence “AES specialises in operating and managing Energy & Utility Plant on behalf of industrial users across various industries throughout South Africa.” Source: RevenueBase Database · checked Sep 16, 2026
7	SFI Group PTY LTD	Partial evidence	Cape Town, South AfricaHQ checked Sep 16, 2026	51-200	123 contacts →
	Partial evidence “Established in 2004 as a provider of air-conditioning and related maintenance services for commercial buildings, SFI Group has grown its original Cape Town based business to a…” Source: RevenueBase Database · checked Sep 16, 2026
8	Brand Engineering SA PTY LTD	Indirect evidence	Cape Town, South AfricaHQ checked Sep 16, 2026	501-1,000	96 contacts →
	Indirect evidence “Brand Engineering SA (Pty) Ltd has been operating in the electrical industry for over 50 years, delivering electrical, instrumentation, and automation installations across…” Source: RevenueBase Database · checked Sep 16, 2026
9	ADC Projects	Partial evidence	Centurion, South AfricaHQ checked Sep 16, 2026	51-200	56 contacts →
	Partial evidence “ADC Projects provide Project Development, Project Management and Engineering Management services to the heavy industry, including Operating & Maintenance of power plants.” Source: RevenueBase Database · checked Sep 16, 2026
10	BT Projects PTY LTD	Indirect evidence	Vanderbijlpark, South AfricaHQ checked Sep 16, 2026	51-200	53 contacts →
	Indirect evidence “Founded in 2012, BT Projects is a leader in South Africa’s electrical and instrumentation sectors.” Source: RevenueBase Database · checked Sep 16, 2026
11	Elex Khanyisa	Partial evidence	Cape Town, South AfricaHQ checked Sep 16, 2026	51-200	49 contacts →
	Partial evidence “elex khanyisa is a specialist electrical construction and maintenance company based in Cape Town, South Africa” Source: RevenueBase Database · checked Sep 16, 2026
12	Khusela Energies	Strong evidence	Jeffreys Bay, South AfricaHQ checked Sep 16, 2026	11-50	42 contacts →
	Strong evidence “KHUSELA ENERGIES is a company based in Jeffreys Bay, Eastern Cape that specialises in the construction, maintenance and operational support of renewable energy assets.” Source: RevenueBase Database · checked Sep 16, 2026
13	Inexma Electrical	Indirect evidence	Stellenbosch, South AfricaHQ checked Sep 16, 2026	51-200	42 contacts →
	Indirect evidence “Inexma Electrical is a Electrical construction company based in the Western Cape, South Africa” Source: RevenueBase Database · checked Sep 16, 2026
14	Vestrel	Partial evidence	Cape Town, South AfricaHQ checked Sep 16, 2026	51-200	41 contacts →
	Partial evidence “Energy Industry Complementing Services The Vestrel Group of Companies offers the Energy Industry complementing services that provide outstanding value and best in class service…” Source: RevenueBase Database · checked Sep 16, 2026
15	Kudon Engineering Services	Indirect evidence	Emalahleni, South AfricaHQ checked Sep 16, 2026	51-200	37 contacts →
	Indirect evidence “Kudon Engineering Services (KES) is a 100% black woman-owned engineering services company formed in 2016 to provide world-class engineering solutions to Africa’s vital industrial…” Source: RevenueBase Database · checked Sep 16, 2026
16	Karebo Group	Partial evidence	Woodmead, South AfricaHQ checked Sep 16, 2026	11-50	36 contacts →
	Partial evidence “Karebo has been in business since 1997 and has a solid track record in large scale energy efficiency rollouts and other mass rollouts.” Source: RevenueBase Database · checked Sep 16, 2026
17	Rotating Equipment Asset Management	Indirect evidence	Witbank, South AfricaHQ checked Sep 16, 2026	201-500	30 contacts →
	Indirect evidence “Rotating Equipment Asset Management (REAM)(Pty) Ltd is a South African mechanical engineering firm specializing in heavy duty rotating equipment for power generation…” Source: RevenueBase Database · checked Sep 16, 2026
18	Diesel Innovations PTY LTD	Indirect evidence	Ekurhuleni, South AfricaHQ checked Sep 16, 2026	51-200	28 contacts →
	Indirect evidence “Diesel Innovations Diesel Innovations, one of South Africa’s leading generator suppliers can give you peace of mind with turn key solutions to all your power requirements.” Source: RevenueBase Database · checked Sep 16, 2026
19	Impact Meter Services PTY LTD	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 16, 2026	51-200	27 contacts →
	Indirect evidence “Impact Meter Services (IMS) has developed an effective and professional electricity management system, which is amongst the best in the marketplace today.” Source: RevenueBase Database · checked Sep 16, 2026
20	Reid & Mitchell	Indirect evidence	Brakpan, South AfricaHQ checked Sep 16, 2026	51-200	23 contacts →
	Indirect evidence “Welcome to Reid & Mitchell - Your Trusted Partner in Electrical Rotating Equipment.” Source: RevenueBase Database · checked Sep 16, 2026
21	TSG South-Africa	Indirect evidence	Alberton, South AfricaHQ checked Sep 16, 2026	201-500	22 contacts →
	Indirect evidence “TSG is the leading technical services provider for responsible mobility, operating in more than 30 countries across Europe and Africa, including South Africa.” Source: RevenueBase Database · checked Sep 16, 2026
22	Southern Power Maintenance	Partial evidence	Modderfontein, South AfricaHQ checked Sep 16, 2026	51-200	17 contacts →
	Partial evidence “Southern Power Maintenance is a dynamic electrical engineering company committed to excellence.” Source: RevenueBase Database · checked Sep 16, 2026
23	Apex Energy Services PTY LTD	Strong evidence	Durbanville Hills, South AfricaHQ checked Sep 16, 2026	11-50	16 contacts →
	Strong evidence “APEX Energy Services provides turnkey maintenance solutions to the energy industry, from renewables to oil & gas.” Source: RevenueBase Database · checked Sep 16, 2026
24	Inkwali Fabrication And Maintenance	Partial evidence	Johannesburg, South AfricaHQ checked Sep 16, 2026	51-200	15 contacts →
	Partial evidence “Inkwali Fabrication and Maintenance (Pty) Ltd is a Pan African engineering services company specialising in steel pipe and plate fabrication, installations and as well as…” Source: RevenueBase Database · checked Sep 16, 2026
25	Solarvest	Partial evidence	Shakashead, South AfricaHQ checked Sep 16, 2026	11-50	13 contacts →
	Partial evidence “We provide renewable energy solutions for C&I & residential sectors.” Source: RevenueBase Database · checked Sep 16, 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 maintenance service providers. 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 maintenance service providers.
Partial evidence: Its own public description names part of energy maintenance service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy maintenance service providers. 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 244 energy maintenance service providers based in South Africa

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Energy maintenance service providers based in South Africa at a glance

As of Sep 16, 2026

24.8%Verified-email coverage

13.1Average contacts per company

11-50Median size (employees)

13.5%Largest-city concentration · Johannesburg

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

115

11-50

51-200

201-500

501-1,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for South Africa, so it is reported there. Company counts and contact totals on this page are exact for South Africa, over 244 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 maintenance service providers, 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 South Africa whose own description of what they do matches “energy maintenance service providers”. 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 maintenance service providers), 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 maintenance service providers, and records with no verified work email. Companies headquartered outside South Africa 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, 794 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 16, 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 maintenance service providers by metro

Energy maintenance service providers in Johannesburg33
Energy maintenance service providers in Cape Town31

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 maintenance service providers, 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 maintenance service providers are there based in South Africa?

RevenueBase identified 244 energy maintenance service providers headquartered in South Africa 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?

Steinmüller Africa, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most energy maintenance service providers?

Johannesburg leads with 33 headquartered companies, followed by Cape Town (31) and Pretoria (11).

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 794 verified decision-maker contacts tracked across these 244 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 16, 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.