Company lists · Data refreshed September 2026

Top 25 Clean tech companies based in South Africa

Name: Clean tech companies based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 349 companies tracked

RevenueBase identified 349 clean tech companies headquartered in South Africa as of September 2026 and tracks 2,328 professional contacts across them, including 776 with verified work emails. Johannesburg is the largest hub.

This list covers clean tech companies 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 19, 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 19, 2026 86% judged on-target in blind review

349Companies

2,328Contacts tracked

776Verified emails

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The 25 largest clean tech companies based in South Africa

Ranked by team size

Top 25 of 349 clean tech companies based in South Africa, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to clean tech companies: 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	Solareff	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	128 contacts →
	Indirect 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 19, 2026
2	ABC Solar SA	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	201-500	122 contacts →
	Indirect evidence “At ABC Solar, we do more than deliver solar infrastructure; we engineer certainty.” Source: RevenueBase Database · checked Sep 19, 2026
3	NEW Planet	Partial evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	201-500	113 contacts →
	Partial evidence “We are New Planet, a leading Green Tech company, inspiring people to #LiveANewWay through sustainable solutions for a New Planet.” Source: RevenueBase Database · checked Sep 19, 2026
4	Alumo Energy	Indirect evidence	Pretoria, South AfricaHQ checked Sep 19, 2026	201-500	79 contacts →
	Indirect evidence “We're not your average solar company.” Source: RevenueBase Database · checked Sep 19, 2026
5	Seriti Green	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	74 contacts →
	Indirect evidence “Seriti Green is owned by Seriti Resources (54.19 %), VennEnergy (15%), RMB (15.41%) and Standard Bank (15.41%), and overseen by its own Board and independent management.” Source: RevenueBase Database · checked Sep 19, 2026
6	Greencape	Indirect evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	51-200	53 contacts →
	Indirect evidence “GreenCape is a non-profit organisation that drives the widespread adoption of economically viable green economy solutions in South Africa.” Source: RevenueBase Database · checked Sep 19, 2026
7	Pele Green Energy	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	51 contacts →
	Indirect evidence “Founded in 2009, Pele Green Energy (PGE) is a leading independent power producer dedicated to transforming Africa’s energy landscape through innovative renewable energy solutions.” Source: RevenueBase Database · checked Sep 19, 2026
8	GC Solar	Indirect evidence	Centurion, South AfricaHQ checked Sep 19, 2026	11-50	47 contacts →
	Indirect evidence “GC Solar is a leading South African renewable energy system supplier.” Source: RevenueBase Database · checked Sep 19, 2026
9	NEW Southern Energy	Indirect evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	11-50	44 contacts →
	Indirect evidence “Click the at the top right hand of this page to follow us, or visit New Southern Energy (N.S.E) is an African company based in South Africa.” Source: RevenueBase Database · checked Sep 19, 2026
10	Genergy South Africa	Indirect evidence	Port Elizabeth, South AfricaHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence “Genergy is a renewable energy company with a National Footprint and its Head Quarters based in Gqeberha.” Source: RevenueBase Database · checked Sep 19, 2026
11	Harmattan Renewables	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence “Harmattan Renewables brings together a team of experienced renewables consultants who have been at the forefront of developing Africa’s renewables sector.” Source: RevenueBase Database · checked Sep 19, 2026
12	Emergent Energy	Indirect evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “At Emergent Energy, we believe energy investments should be clear, simple, and designed for long-term value.” Source: RevenueBase Database · checked Sep 19, 2026
13	Solink	Indirect evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	51-200	27 contacts →
	Indirect evidence “SOLINK is a leading technical advisor and project facilitator in the renewable energy sector.” Source: RevenueBase Database · checked Sep 19, 2026
14	LTM Energy PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	201-500	26 contacts →
	Indirect evidence “LTM Energy is an Energy Services Company (ESCO) with a unique blend of skills and experience obtained primarily in the energy industry.” Source: RevenueBase Database · checked Sep 19, 2026
15	Joule Energy Solutions PTY LTD	Indirect evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “Joule Energy Solutions is a forward-thinking dynamic company, who is on a mission to help solve the energy crisis in South Africa.” Source: RevenueBase Database · checked Sep 19, 2026
16	Nuvo Energy Africa	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	23 contacts →
	Indirect evidence “A renewable energy solutions company delivering viable energy solutions to clients on across the African continent.” Source: RevenueBase Database · checked Sep 19, 2026
17	FIBON	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Your long-term energy and water finance partner.” Source: RevenueBase Database · checked Sep 19, 2026
18	Journey2green	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect 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 19, 2026
19	Energy Group	Partial evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “Energy Group is a specialist clean energy advisor and developer focused on helping large energy users across South Africa reduce costs, improve energy security, and achieve their…” Source: RevenueBase Database · checked Sep 19, 2026
20	Mbhe Group PTY LTD	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 19, 2026	51-200	20 contacts →
	Indirect evidence “MBHE Group is a holistic energy services company with our head office based in Johannesburg, South Africa.” Source: RevenueBase Database · checked Sep 19, 2026
21	Brundtland Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	1-10	19 contacts →
	Indirect evidence “Brundtland Consulting is a South African management consulting firm specialized in climate change, green economy and renewable energy.” Source: RevenueBase Database · checked Sep 19, 2026
22	Sensible Solar	Indirect evidence	Durban, South AfricaHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “Sensible Solar is a team of passionate renewable energy professionals striving to deliver long-term solutions that save money, increase productivity and are good to the earth.” Source: RevenueBase Database · checked Sep 19, 2026
23	Cennergi	Indirect evidence	Centurion, South AfricaHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “At Cennergi, we’re passionate about shaping a cleaner, more resilient energy future for South Africa.” Source: RevenueBase Database · checked Sep 19, 2026
24	Ijika Services	Indirect evidence	Durban, South AfricaHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “IJika Services is a Professional Electrical, Solar & Mechanical Engineering, Procurement and Construction (EPC) Company.” Source: RevenueBase Database · checked Sep 19, 2026
25	Renu Solar	Indirect evidence	Hillcrest, South AfricaHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “ESTABLISHED IN 2008 With over a decade of experience, Renu Solar brings a wealth of knowledge and expertise to the renewable industry.” Source: RevenueBase Database · checked Sep 19, 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: clean tech companies. 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 clean tech companies.
Partial evidence: Its own public description names part of clean tech companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clean tech companies. 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 349 clean tech companies based in South Africa

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Clean tech companies based in South Africa at a glance

As of Sep 19, 2026

33.3%Verified-email coverage

6.7Average contacts per company

1-10Median size (employees)

23.8%Largest-city concentration · Johannesburg

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

195

11-50

116

51-200

201-500

501-1,000

1,001-5,000

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 349 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 clean tech companies, 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 “clean tech companies”. 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 clean tech companies), 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 clean tech companies, 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, 776 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 19, 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.

Clean tech companies by metro

Clean tech companies in Johannesburg83
Clean tech companies in Cape Town66

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 clean tech companies, 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 clean tech companies are there based in South Africa?

RevenueBase identified 349 clean tech companies 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?

Solareff, headquartered in Roodepoort, tops this list with the largest team on record.

Which city has the most clean tech companies?

Johannesburg leads with 83 headquartered companies, followed by Cape Town (66) and Pretoria (19).

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 776 verified decision-maker contacts tracked across these 349 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 19, 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.