Company lists · Data refreshed September 2026

Top 25 Energy systems integration firms based in South Africa

Name: Energy systems integration firms based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 401 companies tracked

RevenueBase identified 401 energy systems integration firms headquartered in South Africa as of September 2026 and tracks 3,101 professional contacts across them, including 1,055 with verified work emails. Johannesburg is the largest hub.

This list covers energy systems integration firms 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 28, 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 28, 2026 86% judged on-target in blind review

401Companies

3,101Contacts tracked

1,055Verified emails

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The 25 largest energy systems integration firms based in South Africa

Ranked by team size

Top 25 of 401 energy systems integration firms based in South Africa, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy systems integration firms: 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	Stage Zero	Partial evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	201-500	162 contacts →
	Partial evidence “Stage Zero – Solar & Backup Power Solutions At Stage Zero, we help South Africans achieve energy independence, saving on their electricity bills and protect against load shedding.” Source: RevenueBase Database · checked Sep 28, 2026
2	Solareff	Partial evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	51-200	128 contacts →
	Partial evidence “Solareff is a specialist South African-based renewable energy solutions company, with a proven track record of installing medium to large-scale rooftop and ground-mounted Solar…” Source: RevenueBase Database · checked Sep 28, 2026
3	Wetility	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	51-200	96 contacts →
	Indirect evidence “In a world where unpredictability has become the norm, people and businesses need more than access to essential services.” Source: RevenueBase Database · checked Sep 28, 2026
4	MOTLA	Partial evidence	City Of Tshwane, South AfricaHQ checked Sep 28, 2026	51-200	82 contacts →
	Partial evidence “South Africa's energy future is being built, one engineered solution at a time.” Source: RevenueBase Database · checked Sep 28, 2026
5	Alumo Energy	Indirect evidence	Pretoria, South AfricaHQ checked Sep 28, 2026	201-500	79 contacts →
	Indirect evidence “We're not your average solar company.” Source: RevenueBase Database · checked Sep 28, 2026
6	Powertech System Integrators	Strong evidence	Pretoria, South AfricaHQ checked Sep 28, 2026	51-200	78 contacts →
	Strong evidence “Powertech System Integrators (PTSI) is a systems engineering business which operates predominantly in the power and energy sectors with customers that include power utilities and…” Source: RevenueBase Database · checked Sep 28, 2026
7	PCS Global PTY LTD	Indirect evidence	Midrand, South AfricaHQ checked Sep 28, 2026	51-200	58 contacts →
	Indirect evidence “PCS Global (Pty) Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
8	Averge Technologies	Strong evidence	Olifantsfontein, South AfricaHQ checked Sep 28, 2026	51-200	56 contacts →
	Strong evidence “Averge Technologies (Pty) Ltd is a leading turnkey solutions provider in the Network Optimisation, DC Power Systems, Energy and Telecommunications fields.” Source: RevenueBase Database · checked Sep 28, 2026
9	BT Projects PTY LTD	Indirect evidence	Vanderbijlpark, South AfricaHQ checked Sep 28, 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 28, 2026
10	IST Integrators Of Systems Technology	Partial evidence	Pretoria, South AfricaHQ checked Sep 28, 2026	51-200	49 contacts →
	Partial evidence “iST (Integrators of Systems Technology) is a systems integrator that operates in Sub-Saharan Africa.” Source: RevenueBase Database · checked Sep 28, 2026
11	4sight OT Automation	Indirect evidence	Sandton, South AfricaHQ checked Sep 28, 2026	51-200	44 contacts →
	Indirect evidence “4Sight OT Automation - previously known as AGE Technologies has been providing Electrical, Control and Instrumentation solutions for over 25 years to South African and global…” Source: RevenueBase Database · checked Sep 28, 2026
12	Genergy South Africa	Partial evidence	Port Elizabeth, South AfricaHQ checked Sep 28, 2026	51-200	43 contacts →
	Partial evidence “Genergy is a renewable energy company with a National Footprint and its Head Quarters based in Gqeberha.” Source: RevenueBase Database · checked Sep 28, 2026
13	Renenergy Africa	Indirect evidence	Stellenbosch, South AfricaHQ checked Sep 28, 2026	11-50	38 contacts →
	Indirect evidence “Electrifying change for businesses.” Source: RevenueBase Database · checked Sep 28, 2026
14	Karebo Group	Partial evidence	Woodmead, South AfricaHQ checked Sep 28, 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 28, 2026
15	Emergent Energy	Partial evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	11-50	34 contacts →
	Partial evidence “At Emergent Energy, we believe energy investments should be clear, simple, and designed for long-term value.” Source: RevenueBase Database · checked Sep 28, 2026
16	Impower PTY LTD	Strong evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	11-50	33 contacts →
	Strong evidence “Founded in 2014, IMPOWER Pty Ltd (formerly All Power Systems) is a leading engineering, procurement and project management contractor (EPCM) operating in the solar and energy…” Source: RevenueBase Database · checked Sep 28, 2026
17	Syncsystems South Africa	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	11-50	32 contacts →
	Indirect evidence “SyncSystems is owned by professional engineers with broad industrial experience, including mining, petrochem, biotech and water treatment.” Source: RevenueBase Database · checked Sep 28, 2026
18	RWW Engineering PTY LTD	Indirect evidence	Laser Park, South AfricaHQ checked Sep 28, 2026	51-200	28 contacts →
	Indirect evidence “We are RWW!” Source: RevenueBase Database · checked Sep 28, 2026
19	Solar Energy Africa	Partial evidence	Stellenbosch, South AfricaHQ checked Sep 28, 2026	11-50	27 contacts →
	Partial evidence “Solar Energy Africa is a multi-disciplinary engineering company and renewable energy solutions provider.” Source: RevenueBase Database · checked Sep 28, 2026
20	Onezero Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Since our inception in 2010, we coined the term Greenovative and have aimed to be pioneers in the electrical and electronic building.” Source: RevenueBase Database · checked Sep 28, 2026
21	Infoled	Partial evidence	Montague Gardens, South AfricaHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “INFOLED is an experienced and progressive Energy Solutions Company and a recognized leader in the project development and energy consulting services industry.” Source: RevenueBase Database · checked Sep 28, 2026
22	Journey2green	Partial evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “Journey2Green see the decision to go Renewable Energy as a Journey and like any journey you plan for it with a start date, an end-destination and a route plan to get you there…” Source: RevenueBase Database · checked Sep 28, 2026
23	TSG South-Africa	Indirect evidence	Alberton, South AfricaHQ checked Sep 28, 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 28, 2026
24	Sparki Solar	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence “Sparki is a rapidly growing solar installation company that aims to provide high-quality.compliant solar installations to homeowners, and business alike.” Source: RevenueBase Database · checked Sep 28, 2026
25	Ipes Consulting Engineers	Partial evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “Instrumented Process and Electrical Systems (IPES) was established as an independent engineering design house in 1988 in Johannesburg, South Africa.” 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 systems integration firms. 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 systems integration firms.
Partial evidence: Its own public description names part of energy systems integration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy systems integration firms. 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 401 energy systems integration firms based in South Africa

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Energy systems integration firms based in South Africa at a glance

As of Sep 28, 2026

34.0%Verified-email coverage

7.7Average contacts per company

11-50Median size (employees)

17.0%Largest-city concentration · Johannesburg

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

199

11-50

155

51-200

201-500

501-1,000

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 401 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 systems integration firms, 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 systems integration firms”. 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 systems integration firms), 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 systems integration firms, 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, 1,055 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 systems integration firms by metro

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 systems integration firms, 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 systems integration firms are there based in South Africa?

RevenueBase identified 401 energy systems integration firms 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?

Stage Zero, headquartered in Cape Town, tops this list with the largest team on record.

Which city has the most energy systems integration firms?

Johannesburg leads with 68 headquartered companies, followed by Cape Town (61) and Pretoria (20).

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 1,055 verified decision-maker contacts tracked across these 401 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.