Company lists · Data refreshed September 2026
Top 25 Alternative energy suppliers based in South Africa
RevenueBase identified 327 alternative energy suppliers headquartered in South Africa as of September 2026 and tracks 2,212 professional contacts across them, including 801 with verified work emails. Johannesburg is the largest hub.
This list covers alternative energy suppliers 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.
The 25 largest alternative energy suppliers based in South Africa
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 151 contacts → | ||||
Indirect evidence “Founded in 2011, our young company has evolved into a dynamic team passionate about providing simple, sustainable savings to our customers.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 122 contacts → | ||||
Indirect evidence “At ABC Solar, we do more than deliver solar infrastructure; we engineer certainty.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 112 contacts → | ||||
Indirect evidence “GoSolr is here to power your life.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 79 contacts → | ||||
Indirect evidence “We're not your average solar company.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 37 contacts → | ||||
Partial evidence “ENERTRAG South Africa is a clean energy developer and is a subsidiary of ENERTRAG SE, an independent energy company in Germany, France, Ghana, Vietnam, Uruguay and expanding to…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 33 contacts → | ||||
Partial evidence “Since 2009, Decentral has been providing enduring energy solutions to the commercial, industrial, and residential sectors in South Africa.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 24 contacts → | ||||
Partial 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 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 20 contacts → | ||||
Partial evidence “MBHE Group is a holistic energy services company with our head office based in Johannesburg, South Africa.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 19 contacts → | ||||
Indirect evidence “Bidvest Renewable Solutions offers a wide range of solutions such as Grid-tie PV, Hybrid and offgrid solar systems.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 18 contacts → | ||||
Partial evidence “At Cennergi, we’re passionate about shaping a cleaner, more resilient energy future for South Africa.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 15 contacts → | ||||
Partial evidence “Customers, partners, and suppliers have commended Telenetix as a world-class organization that is passionate about leveraging the power of homegrown technology to transform the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 14 contacts → | ||||
Partial evidence “We offer Integrated Smart and Sustainable Energy solutions that include Solar PV, Water, and Lighting solutions for the Commercial, Industrial, Agricultural and Residential…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 13 contacts → | ||||
Partial evidence “Sosimple Energy makes cheap clean energy available to business customers.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 13 contacts → | ||||
Partial evidence “We provide renewable energy solutions for C&I & residential sectors.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 11 contacts → | ||||
Indirect evidence “ReCharge Rental Solutions is a solar rental company powered and financed by Investec Bank.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 11 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 10 contacts → | ||||
Indirect evidence “We are providing Turnkey Solar Systems for our Residential, Commercial and Industrial / Agricultural customers.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
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: alternative energy suppliers. 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 alternative energy suppliers.
- Partial evidence
- Its own public description names part of alternative energy suppliers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name alternative energy suppliers. 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 327 alternative energy suppliers based in South Africa
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Alternative energy suppliers based in South Africa at a glance
As of Sep 16, 2026Companies by employee count
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 327 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 alternative energy suppliers, 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 “alternative energy suppliers”. 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 alternative energy suppliers), 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 alternative energy suppliers, 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, 801 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.
Alternative energy suppliers by metro
- Alternative energy suppliers in Johannesburg75
- Alternative energy suppliers in Cape Town54
- Alternative energy suppliers in Pretoria25
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 alternative energy suppliers, 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 alternative energy suppliers are there based in South Africa?
RevenueBase identified 327 alternative energy suppliers 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 alternative energy suppliers?
Johannesburg leads with 75 headquartered companies, followed by Cape Town (54) and Pretoria (25).
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 801 verified decision-maker contacts tracked across these 327 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.
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