Company lists · Data refreshed September 2026

Top 25 Climate consultancies based in Johannesburg, South Africa

Name: Climate consultancies based in Johannesburg, South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 84 companies tracked

RevenueBase identified 84 climate consultancies headquartered in Johannesburg, South Africa as of September 2026 and tracks 701 professional contacts across them, including 336 with verified work emails. Cape Town is the largest hub.

This list covers climate consultancies 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 21, 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 21, 2026 86% judged on-target in blind review

84Companies

701Contacts tracked

336Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest climate consultancies based in Johannesburg, South Africa

Ranked by team size

Top 25 of 84 climate consultancies based in Johannesburg, South Africa, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to climate consultancies: 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	JG Afrika PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	201-500	221 contacts →
	Indirect evidence “JG Afrika, a leading multi-disciplinary engineering and environmental consultancy in South Africa, provides civil and structural engineering and environmental consulting services…” Source: RevenueBase Database · checked Sep 21, 2026
2	Siyakha Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	51-200	90 contacts →
	Indirect evidence “We are a niche firm that drives investment, commercial excellence, developmental strategies, and sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
3	Synergy Global Consulting LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	37 contacts →
	Indirect evidence “Synergy Global Consulting Ltd (Synergy) is an independent international consulting company that works with natural resource and infrastructure sectors operating in challenging…” Source: RevenueBase Database · checked Sep 21, 2026
4	Presidential Climate Commission	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	35 contacts →
	Partial evidence “The objective of the Commission is to advice on South Africa’s climate change response to ensure realisation of the vision for effective climate change response and the long-term…” Source: RevenueBase Database · checked Sep 21, 2026
5	Rayten Engineering Solutions PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	25 contacts →
	Indirect evidence “We provide air quality and engineering services to a wide range of industries, government departments, and consulting firms in Southern Africa.” Source: RevenueBase Database · checked Sep 21, 2026
6	Savannah Environmental PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “Through undertaking a broad range of environmental studies, Savannah Environmental has gained extensive experience with regards to environmental legislation requirements and…” Source: RevenueBase Database · checked Sep 21, 2026
7	Promethium Carbon	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	19 contacts →
	Partial evidence “Promethium Carbon is a specialist advisory firm focusing on carbon and climate change.” Source: RevenueBase Database · checked Sep 21, 2026
8	Brundtland Consulting	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 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 21, 2026
9	Environmental Impact Management Services PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “Environmental Impact Management Services (Pty) Ltd (EIMS) was founded in 1993 and has steadily grown to be a significant player in the environmental management consulting industry…” Source: RevenueBase Database · checked Sep 21, 2026
10	Nsovo Environmental Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “Our specialist area of focus is the assessment of multifaceted projects, including the establishment of linear developments, bulk infrastructure, power generation and…” Source: RevenueBase Database · checked Sep 21, 2026
11	Ep3 Environmental	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “EP3 Environmental (Pty) Ltd was established by Eben van Schalkwyk in 2013 and is a multi-disciplinary consulting firm that provides Environmental and Sustainability consulting…” Source: RevenueBase Database · checked Sep 21, 2026
12	Orange INK	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	11 contacts →
	Indirect evidence “At Orange Ink, we know that the only constant is change, with our world growing faster by the minute!” Source: RevenueBase Database · checked Sep 21, 2026
13	Delta Carbon	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	9 contacts →
	Indirect evidence “Delta Carbon is an integrated energy services and decarbonisation advisory company.” Source: RevenueBase Database · checked Sep 21, 2026
14	Aqua Earth	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	8 contacts →
	Indirect evidence “Aqua Earth celebrates more than 20 years of operation and prides itself on having a dynamic team of specialists in Hydrogeology, also identified as Groundwater, as well as…” Source: RevenueBase Database · checked Sep 21, 2026
15	Rainbow Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “Rainbow Consulting is a professional service consultancy which provides business and marketing expertise focused on strategy, reputation and performance management, with the…” Source: RevenueBase Database · checked Sep 21, 2026
16	Elizabeth Kent Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “Elizabeth Kent Consulting is a writing, communications and reporting firm with a sustainability specialism.” Source: RevenueBase Database · checked Sep 21, 2026
17	Greenfield Sustainable Group	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “Greenfield denotes pristine resources with untapped potential, operating at peak capacity.” Source: RevenueBase Database · checked Sep 21, 2026
18	Potlako Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “We are a niche Consulting Company, specialising in Tariff Modelling, assisting with the regulation of Aeronautical and Marine tariffs for meteorological services.” Source: RevenueBase Database · checked Sep 21, 2026
19	Igugu Global	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “Igugu Global provides data-driven climate insights for cross-sector portfolios.” Source: RevenueBase Database · checked Sep 21, 2026
20	VMG Consultants	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	4 contacts →
	Indirect evidence “VMG Consultants have been awarded Mechanical Engineering Consulting company of the year, two years running.” Source: RevenueBase Database · checked Sep 21, 2026
21	Macanna Construction Cost Management	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Macanna is an independent consultancy providing contract and commercial services ranging from estimating, to Pre & Post contract management, to claims mitigation, to contract…” Source: RevenueBase Database · checked Sep 21, 2026
22	NIA Impact Invest	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “We design rigorous, data-driven frameworks that help investors, funds, and enterprises strike the right balance between financial performance and measurable impact.” Source: RevenueBase Database · checked Sep 21, 2026
23	Climate Legal	Partial evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “Climate Legal is a specialist legal and policy consultancy based in South Africa and operating across the continent.” Source: RevenueBase Database · checked Sep 21, 2026
24	Boost Brand Catalysts	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	11-50	1 contacts →
	Indirect evidence “At Boost Brand Catalysts, we empower impact-driven companies to secure growth funding and achieve sustainable success.” Source: RevenueBase Database · checked Sep 21, 2026
25	Semantics Communications PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 21, 2026	1-10	1 contacts →
	Indirect evidence “At Semantics Communications, we write, consult on and manage projects for integrated and sustainability reports, as well as other corporate communications, and offer a full range…” Source: RevenueBase Database · checked Sep 21, 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: climate consultancies. 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 climate consultancies.
Partial evidence: Its own public description names part of climate consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name climate consultancies. 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 84 climate consultancies based in Johannesburg, South Africa

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 336 reachable decision-makers.

Free signup · no credit card

View the full list →

Climate consultancies based in Johannesburg, South Africa at a glance

As of Sep 21, 2026

47.9%Verified-email coverage

8.3Average contacts per company

1-10Median size (employees)

131.0%Largest-city concentration · Cape Town

Sep 21, 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 84 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 climate consultancies, 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 “climate consultancies”. 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 climate consultancies), 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 climate consultancies, 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, 336 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 21, 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.

Climate consultancies by metro in South Africa

Climate consultancies in Cape Town110
Climate consultancies in Johannesburg84
Climate consultancies in Pretoria43

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 climate consultancies, 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 climate consultancies are there based in Johannesburg, South Africa?

RevenueBase identified 84 climate consultancies 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?

JG Afrika PTY LTD, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most climate consultancies?

Cape Town leads with 110 headquartered companies, followed by Johannesburg (84) and Pretoria (43).

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 336 verified decision-maker contacts tracked across these 84 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 84 climate consultancies based in Johannesburg, South Africa. Start with a free account, no credit card.

Download this list →

Related lists

Climate consultancies by geography

Browse the directory

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.