Company lists · Data refreshed October 2026

Top 25 Cleantech and green energy startups based in South Africa

Name: Cleantech and green energy startups based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 360 companies tracked

RevenueBase identified 360 company matches for cleantech and green energy startups associated with South Africa as of October 2026 and tracks 3,474 professional contacts across them, including 1,296 with verified work emails. Johannesburg is the largest hub.

This list covers company matches for cleantech and green energy startups associated with South Africa, 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 9, 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 9, 2026 How this list was built

360Companies

3,474Contacts tracked

1,296Verified emails

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The 25 largest cleantech and green energy startups based in South Africa

Ranked by team size

Top 25 of 360 company matches for cleantech and green energy startups based in South Africa, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Mulilo	Exact match	Cape Town, South AfricaHQ recorded Oct 9, 2026	51-200	205 contacts →
	Exact match “Since its establishment in 2008, Mulilo has grown into one of the leading Independent Power Producers (IPP) in Southern Africa.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Solarafrica Energy	Exact match	Irene, South AfricaHQ recorded Oct 9, 2026	51-200	166 contacts →
	Exact match “Founded in 2011, our young company has evolved into a dynamic team passionate about providing simple, sustainable savings to our customers.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	Stage Zero	Exact match	Cape Town, South AfricaHQ recorded Oct 9, 2026	201-500	162 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Solareff	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	51-200	123 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	ABC Solar SA	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	201-500	118 contacts →
	Exact match “At ABC Solar, we do more than deliver solar infrastructure; we engineer certainty.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Gosolr	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	51-200	113 contacts →
	Exact match “GoSolr is here to power your life.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Wetility	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	51-200	102 contacts →
	Exact match “In a world where unpredictability has become the norm, people and businesses need more than access to essential services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Seriti Green	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	51-200	81 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Alumo Energy	Exact match	Pretoria, South AfricaHQ recorded Oct 9, 2026	201-500	77 contacts →
	Exact match “We're not your average solar company.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	Pele Energy Group	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	51-200	76 contacts →
	Exact match “A sustainable development company.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Pele Green Energy	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	51-200	65 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Juwi South Africa	Exact match	Cape Town, South AfricaHQ recorded Oct 9, 2026	51-200	62 contacts →
	Exact match “Our aim is to create lasting value for all people through the economic and social benefit of renewable energy.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Rhino Energy Solutions	Exact match	Sandton, South AfricaHQ recorded Oct 9, 2026	51-200	57 contacts →
	Exact match “Rhino Energy is committed to addressing South Africa’s energy crisis and the soaring costs of energy.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	EDF Renewables South Africa	Exact match	Cape Town, South AfricaHQ recorded Oct 9, 2026	51-200	48 contacts →
	Exact match “EDF Renewables (South Africa) is a locally based, fully integrated, independent power producer that develops, finances, builds, owns and operates commercial renewable energy…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	GC Solar	Exact match	Centurion, South AfricaHQ recorded Oct 9, 2026	11-50	45 contacts →
	Exact match “GC Solar is a leading South African renewable energy system supplier.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Genergy South Africa	Exact match	Port Elizabeth, South AfricaHQ recorded Oct 9, 2026	51-200	42 contacts →
	Exact match “Genergy is a renewable energy company with a National Footprint and its Head Quarters based in Gqeberha.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Emergent Energy	Exact match	Cape Town, South AfricaHQ recorded Oct 9, 2026	11-50	37 contacts →
	Exact match “At Emergent Energy, we believe energy investments should be clear, simple, and designed for long-term value.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Renenergy Africa	Exact match	Stellenbosch, South AfricaHQ recorded Oct 9, 2026	11-50	37 contacts →
	Exact match “Electrifying change for businesses.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	NEW Southern Energy	Exact match	Cape Town, South AfricaHQ recorded Oct 9, 2026	11-50	32 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	Harmattan Renewables	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	11-50	31 contacts →
	Exact match “Harmattan Renewables brings together a team of experienced renewables consultants who have been at the forefront of developing Africa’s renewables sector.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Sparki Solar	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	51-200	28 contacts →
	Exact match “Sparki is a rapidly growing solar installation company that aims to provide high-quality.compliant solar installations to homeowners, and business alike.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	RED CAP Energy PTY LTD	Exact match	Cape Town, South AfricaHQ recorded Oct 9, 2026	11-50	26 contacts →
	Exact match “Red Cap Energy is a leading South African renewable energy developer.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Nuvo Energy Africa	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	51-200	26 contacts →
	Exact match “A renewable energy solutions company delivering viable energy solutions to clients on across the African continent.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	GET OFF Grid	Exact match	Johannesburg, South AfricaHQ recorded Oct 9, 2026	11-50	25 contacts →
	Exact match “It now makes economic and environmental sense for businesses to invest in Solar and start saving money as they pay less for power.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	Solink	Exact match	Cape Town, South AfricaHQ recorded Oct 9, 2026	51-200	24 contacts →
	Exact match “SOLINK is a leading technical advisor and project facilitator in the renewable energy sector.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “cleantech and green energy startups”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 360 cleantech and green energy startups based in South Africa

See the full list, filter by size, metro and specialty, and access 1,296 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cleantech and green energy startups based in South Africa at a glance

As of Oct 9, 2026

37.3%Verified-email coverage

9.7Average contacts per company

1-10Median size (employees)

23.1%Largest-city concentration · Johannesburg

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

181

11-50

126

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 360 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 South Africa whose business descriptions match “cleantech and green energy startups” 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 1,296 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 9, 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.

Cleantech and green energy startups by metro

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 “cleantech and green energy startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cleantech and green energy startups are there based in South Africa?

RevenueBase identified 360 company matches for cleantech and green energy startups associated with South Africa 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?

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

Which city has the most cleantech and green energy startups?

Johannesburg leads with 83 company records, followed by Cape Town (80) and Sandton (15).

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 1,296 professional contacts with verified work emails tracked across these 360 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 9, 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.