Company lists · Data refreshed September 2026

Top 25 Decarbonization consultancies based in South Africa

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 245 companies tracked

RevenueBase identified 245 decarbonization consultancies headquartered in South Africa as of September 2026 and tracks 1,132 professional contacts across them, including 415 with verified work emails. Cape Town is the largest hub.

This list covers decarbonization consultancies 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 28, 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 28, 2026 86% judged on-target in blind review

245Companies

1,132Contacts tracked

415Verified emails

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The 25 largest decarbonization consultancies based in South Africa

Ranked by team size

Top 25 of 245 decarbonization consultancies based in South Africa, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to decarbonization 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	C4 Ecosolutions	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	51-200	60 contacts →
	Indirect evidence “Turning Climate Finance into Climate Impact.” Source: RevenueBase Database · checked Sep 28, 2026
2	Livewire Engineering And Consulting PTY LTD	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	11-50	48 contacts →
	Indirect evidence “Livewire Engineering and Consulting (Pty) Ltd was founded in March 2006 to specifically address consulting requirements in the fields of Energy Management, Tariff Analysis, Energy…” Source: RevenueBase Database · checked Sep 28, 2026
3	GCX	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	11-50	38 contacts →
	Indirect evidence “The journey to sustainability is complex.” Source: RevenueBase Database · checked Sep 28, 2026
4	Yellow Tree	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	11-50	35 contacts →
	Indirect evidence “Climate Change Solutions.” Source: RevenueBase Database · checked Sep 28, 2026
5	Environmental Assurance PTY LTD	Indirect evidence	Pretoria, South AfricaHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “ENVASS Group of Companies is an environmental consultancy, established in 2004 in South Africa.” Source: RevenueBase Database · checked Sep 28, 2026
6	Energy Group	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “Energy Group is a specialist clean energy advisor and developer focused on helping large energy users across South Africa reduce costs, improve energy security, and achieve their…” Source: RevenueBase Database · checked Sep 28, 2026
7	Promethium Carbon	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “Promethium Carbon is a specialist advisory firm focusing on carbon and climate change.” Source: RevenueBase Database · checked Sep 28, 2026
8	Brundtland Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	1-10	19 contacts →
	Indirect evidence “Brundtland Consulting is a South African management consulting firm specialized in climate change, green economy and renewable energy.” Source: RevenueBase Database · checked Sep 28, 2026
9	Ecolution Consulting	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “Ecolution Consulting is a green building consultancy demonstrating that responsible design is the most practical and efficient way to build for the future.” Source: RevenueBase Database · checked Sep 28, 2026
10	Anthesis South Africa	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	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 Sep 28, 2026
11	Grenex	Indirect evidence	Pretoria, South AfricaHQ checked Sep 28, 2026	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 Sep 28, 2026
12	Energy System Planning ESP	Indirect evidence	Parkwood, South AfricaHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Since our ‘proudly-small’ beginnings in April 2009, ESP has grown to become a formidable and trusted engineering consultancy for the energy sector.” Source: RevenueBase Database · checked Sep 28, 2026
13	EXM Advisory Services PTY LTD	Indirect evidence	Ballito, South AfricaHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Focused primarily in the south african energy and mineral resources market servicing junior, mid-tier and large multi-national clients.” Source: RevenueBase Database · checked Sep 28, 2026
14	Gravitas Minerals	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	1-10	14 contacts →
	Indirect evidence “At Gravitas, we collaborate with our clients to reduce their environmental liability.” Source: RevenueBase Database · checked Sep 28, 2026
15	SEM Solutions PTY LTD	Indirect evidence	Centurion, South AfricaHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “SEM Solutions is an ENERGY ENGINEERING company that specialises in tailoring bespoke solutions for the energy requirements of our clients.” Source: RevenueBase Database · checked Sep 28, 2026
16	Consulting For Sustainable Solutions	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “Consulting for Sustainable Solutions (CSS) is a boutique advisory firm which aims to unlock capital for Africa's sustainable future.” Source: RevenueBase Database · checked Sep 28, 2026
17	Ep3 Environmental	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 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 28, 2026
18	Chand Consultants	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “Chand Environmental Consultants is located in the dynamic city of Cape Town, South Africa providing environmental consultancy services to our clients for over 24 years.” Source: RevenueBase Database · checked Sep 28, 2026
19	Peppertree Capital	Indirect evidence	Dunkeld West, South AfricaHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “PepperTree Capital is an independent, owner-led advisory boutique focused on energy and infrastructure financial advisory and capital raising.” Source: RevenueBase Database · checked Sep 28, 2026
20	U Systems PTY LTD	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “The U Group of Companies offer tailored solutions.” Source: RevenueBase Database · checked Sep 28, 2026
21	NTC Group PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	11-50	9 contacts →
	Indirect evidence “We are an Environmental Compliance and ESG Advisory firm offering environmental compliance and ESG services to the built infrastructure sector.” Source: RevenueBase Database · checked Sep 28, 2026
22	Delta Carbon	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	1-10	9 contacts →
	Indirect evidence “Delta Carbon is an integrated energy services and decarbonisation advisory company.” Source: RevenueBase Database · checked Sep 28, 2026
23	Enviroworks Environmental	Indirect evidence	Bloemfontein, South AfricaHQ checked Sep 28, 2026	11-50	9 contacts →
	Indirect evidence “Enviroworks is a South African environmental consultancy established in 2002, offering comprehensive services in environmental legal compliance, impact assessments, ecological…” Source: RevenueBase Database · checked Sep 28, 2026
24	Imbue Sustainability	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	1-10	9 contacts →
	Indirect evidence “Imbue Sustainability is a leading South African sustainability consultancy specialising in solar and renewable energy solutions and utility optimisation, enhancing the…” Source: RevenueBase Database · checked Sep 28, 2026
25	PJC Partners	Indirect evidence	Cape Town, South AfricaHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “PJC is an environmental + sustainable design consultancy in the building industry focusing on climate responsive architecture, bioclimatic design and operational building…” Source: RevenueBase Database · checked Sep 28, 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: decarbonization 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 decarbonization consultancies.
Partial evidence: Its own public description names part of decarbonization consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name decarbonization 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 245 decarbonization consultancies based in South Africa

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Decarbonization consultancies based in South Africa at a glance

As of Sep 28, 2026

36.7%Verified-email coverage

4.6Average contacts per company

1-10Median size (employees)

24.9%Largest-city concentration · Cape Town

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

182

11-50

51-200

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 245 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 decarbonization 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 South Africa whose own description of what they do matches “decarbonization 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 decarbonization 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 decarbonization consultancies, 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, 415 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 28, 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.

Decarbonization consultancies 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 decarbonization 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 decarbonization consultancies are there based in South Africa?

RevenueBase identified 245 decarbonization consultancies 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?

C4 Ecosolutions, headquartered in Cape Town, tops this list with the largest team on record.

Which city has the most decarbonization consultancies?

Cape Town leads with 61 headquartered companies, followed by Johannesburg (55) and Pretoria (16).

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 415 verified decision-maker contacts tracked across these 245 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 28, 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.