Company lists · Data refreshed September 2026

Top 25 Sustainable energy consultants based in Johannesburg, South Africa

Name: Sustainable energy consultants based in Johannesburg, South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 88 companies tracked

RevenueBase identified 88 sustainable energy consultants headquartered in Johannesburg, South Africa as of September 2026 and tracks 489 professional contacts across them, including 157 with verified work emails. Johannesburg is the largest hub.

This list covers sustainable energy consultants headquartered in Johannesburg, 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 18, 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 18, 2026 86% judged on-target in blind review

88Companies

489Contacts tracked

157Verified emails

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The 25 largest sustainable energy consultants based in Johannesburg, South Africa

Ranked by team size

Top 25 of 88 sustainable energy consultants based in Johannesburg, South Africa, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable energy consultants: 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	ABC Solar SA	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 18, 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 18, 2026
2	Harmattan Renewables	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	35 contacts →
	Partial 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 18, 2026
3	LTM Energy PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	201-500	26 contacts →
	Partial 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 18, 2026
4	Journey2green	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 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 18, 2026
5	Bidvest Renewable Solutions	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	51-200	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 18, 2026
6	Brundtland Consulting	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	1-10	19 contacts →
	Partial evidence “Brundtland Consulting is a South African management consulting firm specialized in climate change, green economy and renewable energy.” Source: RevenueBase Database · checked Sep 18, 2026
7	Zero Point Energy	Strong evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	14 contacts →
	Strong evidence “Established & operational since 2015, we are a proudly South African sustainable energy company providing professional engineering consulting, turn-key Engineering, Procurement &…” Source: RevenueBase Database · checked Sep 18, 2026
8	M Squared Power Generation	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	11 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
9	Delta Carbon	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	1-10	9 contacts →
	Partial evidence “Delta Carbon is an integrated energy services and decarbonisation advisory company.” Source: RevenueBase Database · checked Sep 18, 2026
10	Pure Electrical Solutions Gauteng	Strong evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	9 contacts →
	Strong evidence “Pure Electrical Solutions is a leading solar company dedicated to providing innovative and sustainable energy solutions for residential, industrial, and commercial sectors.” Source: RevenueBase Database · checked Sep 18, 2026
11	RCSOL	Strong evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	1-10	9 contacts →
	Strong evidence “We are experts in providing smart and sustainable energy systems for industrial and commercial operations, utilities, as well as high-tech residential operations.” Source: RevenueBase Database · checked Sep 18, 2026
12	Sakisa Energy & Technology Group	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	8 contacts →
	Partial evidence “Sakisa Energy and Technology Group is a South African-based renewable energy company delivering smart, cost-effective solar solutions for residential, commercial, and industrial…” Source: RevenueBase Database · checked Sep 18, 2026
13	Viridis Ipsum	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	6 contacts →
	Indirect evidence “Viridis ipsum in latin means green engineering.” Source: RevenueBase Database · checked Sep 18, 2026
14	Matleng Energy Solutions PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	4 contacts →
	Partial evidence “Matleng is a multi-disciplinary consulting engineering firm which strives to solve clients' energy related challenges through the effective implementation of new and/or existing…” Source: RevenueBase Database · checked Sep 18, 2026
15	VMG Consultants	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	4 contacts →
	Partial evidence “VMG Consultants have been awarded Mechanical Engineering Consulting company of the year, two years running.” Source: RevenueBase Database · checked Sep 18, 2026
16	Solar Deity PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	1-10	4 contacts →
	Partial evidence “At Solar Deity (Pty) Ltd, we're on a mission to revolutionize South Africa's renewable energy landscape.” Source: RevenueBase Database · checked Sep 18, 2026
17	The Green-Co	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	201-500	3 contacts →
	Indirect evidence “We supply complete green solutions, saving costs and maximising profits for our clients.” Source: RevenueBase Database · checked Sep 18, 2026
18	Greenstone Energy	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	3 contacts →
	Partial evidence “Greenstone Energy is an Independent Power producer providing renewable energy solutions to municipalities, commercial and industrial customers.” Source: RevenueBase Database · checked Sep 18, 2026
19	Alpenglow Consulting	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	1-10	3 contacts →
	Partial evidence “Alpenglow Consulting is a leading energy project development and advisory firm based in Johannesburg, South Africa.” Source: RevenueBase Database · checked Sep 18, 2026
20	Gknect	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	2 contacts →
	Indirect evidence “A Full-Stack IT Partner Gknect was built out of frustration with the status quo.” Source: RevenueBase Database · checked Sep 18, 2026
21	Nuhome Africa	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	11-50	2 contacts →
	Indirect evidence “At NuHome, we are on a mission to revolutionise the way people power their apartments, homes and businesses.” Source: RevenueBase Database · checked Sep 18, 2026
22	Noeskom	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	1-10	2 contacts →
	Partial evidence “NOESKOM is an end-to-end Renewable Energy Utilities Company with a focus on solar energy.” Source: RevenueBase Database · checked Sep 18, 2026
23	Blue Echo	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	1-10	1 contacts →
	Indirect evidence “Blue Echo is exceptionally driven in our pursuit of shifting the way businesses and individuals perceive the confines in which we believe we are held when it comes to using and…” Source: RevenueBase Database · checked Sep 18, 2026
24	Modtech Energy	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	1-10	1 contacts →
	Partial evidence “Energised Living, Naturally.” Source: RevenueBase Database · checked Sep 18, 2026
25	Load Shredder	Partial evidence	Johannesburg, South AfricaHQ checked Sep 18, 2026	1-10	1 contacts →
	Partial evidence “We're all about energy solutions.” Source: RevenueBase Database · checked Sep 18, 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: sustainable energy consultants. 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 sustainable energy consultants.
Partial evidence: Its own public description names part of sustainable energy consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable energy consultants. 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 88 sustainable energy consultants based in Johannesburg, South Africa

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Sustainable energy consultants based in Johannesburg, South Africa at a glance

As of Sep 18, 2026

32.1%Verified-email coverage

5.6Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Johannesburg

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole South Africa list rather than for Johannesburg, so it is reported there. Company counts and contact totals on this page are exact for Johannesburg, over 88 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 sustainable energy consultants, 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 Johannesburg, South Africa whose own description of what they do matches “sustainable energy consultants”. 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 sustainable energy consultants), 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 sustainable energy consultants, and records with no verified work email. Companies headquartered outside Johannesburg 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, 157 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 18, 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.

Sustainable energy consultants by metro in South Africa

Sustainable energy consultants in Johannesburg88
Sustainable energy consultants in Cape Town84
Sustainable energy consultants in Pretoria36

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 sustainable energy consultants, 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 sustainable energy consultants are there based in Johannesburg, South Africa?

RevenueBase identified 88 sustainable energy consultants headquartered in Johannesburg, 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?

ABC Solar SA, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most sustainable energy consultants?

Johannesburg leads with 88 headquartered companies, followed by Cape Town (84) and Pretoria (36).

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 157 verified decision-maker contacts tracked across these 88 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 18, 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.