Company lists · Data refreshed August 2026

Top 25 Climate change consulting firms based in South Africa

Name: Climate change consulting firms based in South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 350 companies tracked

RevenueBase identified 350 climate change consulting firms headquartered in South Africa as of August 2026 and tracks 2,336 professional contacts across them, including 645 with verified work emails and 130 with mobile numbers. Cape Town is the largest hub.

This list covers climate change consulting firms 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 August 31, 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 RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

350Companies

2,336Contacts tracked

645Verified emails

130Mobile numbers

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The 25 largest climate change consulting firms based in South Africa

Ranked by team size

Top 25 of 350 climate change consulting firms based in South Africa, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to climate change consulting firms: 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	NUS Consulting Group	Indirect evidence	Sandton, South Africa	201-500	334 contacts →
	Indirect evidence “National Utility Service, Inc.” Source: RevenueBase Database · checked Aug 31, 2026
2	Ncc-Group PTY LTD	Partial evidence	Durban, South Africa	201-500	120 contacts →
	Partial evidence “Established in South Africa in 2003, NCC-Group delivers specialist consulting and implementation services designed to meet the unique needs of each project – both locally and…” Source: RevenueBase Database · checked Aug 31, 2026
3	Siyakha Consulting	Indirect evidence	Johannesburg, South Africa	51-200	90 contacts →
	Indirect evidence “We are a niche firm that drives investment, commercial excellence, developmental strategies, and sustainability.” Source: RevenueBase Database · checked Aug 31, 2026
4	ECO Elementum	Indirect evidence	City Of Tshwane, South Africa	51-200	68 contacts →
	Indirect evidence “Established in 2013, Eco Elementum is a leading environmental and engineering consultancy.” Source: RevenueBase Database · checked Aug 31, 2026
5	C4 Ecosolutions	Strong evidence	Cape Town, South Africa	51-200	61 contacts →
	Strong evidence “C4 EcoSolutions is a consulting company based in Cape Town, South Africa that specialises in the design and implementation of climate change projects.” Source: RevenueBase Database · checked Aug 31, 2026
6	Terramanzi Group	Indirect evidence	Cape Town, South Africa	11-50	47 contacts →
	Indirect evidence “Terramanzi Group is a leading Cape Town based multi-disciplinary environmental firm.” Source: RevenueBase Database · checked Aug 31, 2026
7	Yellow Tree	Strong evidence	Meyerton, South Africa	11-50	35 contacts →
	Strong evidence “Climate Change Solutions.” Source: RevenueBase Database · checked Aug 31, 2026
8	Solid Green	Partial evidence	Johannesburg, South Africa	11-50	35 contacts →
	Partial evidence “Solid Green Consulting is a young and energetic company enthusiastic about advancing sustainability in the built environment.” Source: RevenueBase Database · checked Aug 31, 2026
9	Zitholele Consulting	Partial evidence	Midrand, South Africa	11-50	33 contacts →
	Partial evidence “ZITHOLELE CONSULTING, offers Specialist Consulting Services in the fields of Engineering, Environmental Management, Waste Management and Strategic Communication.” Source: RevenueBase Database · checked Aug 31, 2026
10	Groundtruth	Partial evidence	Hilton, South Africa	11-50	32 contacts →
	Partial evidence “An award-winning multidisciplinary consulting company with over 20 years experience in water, biodiversity, and engineering across aquatic and terrestrial ecosystems.” Source: RevenueBase Database · checked Aug 31, 2026
11	Change Logic Consulting Services	Partial evidence	Johannesburg, South Africa	51-200	28 contacts →
	Partial evidence “Change Logic was founded in 2002 on the back of a thriving internal Change Management Practice that was initially drafted in 1998.” Source: RevenueBase Database · checked Aug 31, 2026
12	Environmental Assurance PTY LTD	Indirect evidence	Hartebeespoort, South Africa	11-50	21 contacts →
	Indirect evidence “ENVASS Group of Companies is an environmental consultancy, established in 2004 in South Africa.” Source: RevenueBase Database · checked Aug 31, 2026
13	Promethium Carbon	Strong evidence	Johannesburg, South Africa	11-50	19 contacts →
	Strong evidence “Promethium Carbon is a specialist advisory firm focusing on carbon and climate change.” Source: RevenueBase Database · checked Aug 31, 2026
14	Kongiwe	Indirect evidence	Bryanston, South Africa	11-50	19 contacts →
	Indirect evidence “Founded in 2016, Kongiwe is a contemporary consultancy with the purpose ‘To solve environmental and social challenges by providing expert bespoke solutions that promote current…” Source: RevenueBase Database · checked Aug 31, 2026
15	Thero Services Compliance IS OUR Business- Hssegc	Indirect evidence	Bloemfontein, South Africa	51-200	18 contacts →
	Indirect evidence “Thero Services is an Internationally Certified Solution Based Firm that specialises in Multi-Disciplinary Compliance in various sectors in the Global Scale in Health and Safety…” Source: RevenueBase Database · checked Aug 31, 2026
16	Milnex Environmental Consultants	Indirect evidence	Potchefstroom North West Province, South Africa	11-50	17 contacts →
	Indirect evidence “Milnex provides comprehensive environmental services to the mining, commercial, residential and agricultural industry.” Source: RevenueBase Database · checked Aug 31, 2026
17	Anthesis South Africa	Indirect evidence	Cape Town, South Africa	11-50	16 contacts →
	Indirect evidence “Anthesis works with cities, companies, and other organisations to develop financially driven sustainability strategies, underpinned by technical expertise and delivered by…” Source: RevenueBase Database · checked Aug 31, 2026
18	Grenex	Indirect evidence	Nieuw Muckleneuk Pretoria, South Africa	11-50	16 contacts →
	Indirect evidence “Located in Pretoria, Grenex (PTY) Ltd specializes in energy management, water management, carbon management services and products.” Source: RevenueBase Database · checked Aug 31, 2026
19	Environmental Impact Management Services PTY LTD	Partial evidence	Johannesburg, South Africa	11-50	15 contacts →
	Partial 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 Aug 31, 2026
20	E-Tek Consulting	Partial evidence	Potchefstroom, South Africa	11-50	15 contacts →
	Partial evidence “E-TEK Consulting was established in 2007 and consists of a team of dedicated specialists focusing on environmental engineering, environmental management and closure liability…” Source: RevenueBase Database · checked Aug 31, 2026
21	Triplo4 Sustainable Solutions PTY LTD	Indirect evidence	Msunduzi, South Africa	11-50	14 contacts →
	Indirect evidence “Triplo 4 specialises in solving environmental challenges and improving environmental performance in a sustainable manner.” Source: RevenueBase Database · checked Aug 31, 2026
22	Nsovo Environmental Consulting	Indirect evidence	Johannesburg, South Africa	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 Aug 31, 2026
23	Nemai Consulting	Partial evidence	Gqeberha, South Africa	11-50	12 contacts →
	Partial evidence “Nemai Consulting has been in existence since and was built on a vision to help clients manage their most demanding environmental, social and occupational health and safety…” Source: RevenueBase Database · checked Aug 31, 2026
24	Environmental Management Group EMG	Indirect evidence	Bloemfontein, South Africa	11-50	12 contacts →
	Indirect evidence “We are a South African Environmental Management company that works with private and public organisations to promote sustainable development and environmental management through…” Source: RevenueBase Database · checked Aug 31, 2026
25	Inavit IQ	Partial evidence	Weltevredenpark Johannesburg, South Africa	11-50	11 contacts →
	Partial evidence “inavit iQ is a niche consulting business focusing on the key levers that will impact positively on sustainable business impact.” Source: RevenueBase Database · checked Aug 31, 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 change consulting firms. 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 change consulting firms.
Partial evidence: Its own public description names part of climate change consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name climate change consulting firms. 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 350 climate change consulting firms based in South Africa

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Climate change consulting firms based in South Africa at a glance

As of Aug 31, 2026

27.6%Verified-email coverage

5.6%Mobile-number coverage

6.7Average contacts per company

1-10Median size (employees)

19.1%Largest-city concentration · Cape Town

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

257

11-50

51-200

201-500

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 change consulting firms, 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 “climate change consulting firms”. 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 change consulting firms), 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 change consulting firms, 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, 645 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 August 31, 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 change consulting firms by metro

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 change consulting firms, 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 change consulting firms are there based in South Africa?

RevenueBase identified 350 climate change consulting firms headquartered in South Africa as of August 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?

NUS Consulting Group, headquartered in Sandton, tops this list with the largest team on record.

Which city has the most climate change consulting firms?

Cape Town leads with 67 headquartered companies, followed by Johannesburg (65) and Pretoria (27).

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 645 verified decision-maker contacts tracked across these 350 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.