Company lists · Data refreshed September 2026

Top 25 Energy engineering consulting firms based in Johannesburg, South Africa

Name: Energy engineering consulting firms based in Johannesburg, South Africa
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 147 companies tracked

RevenueBase identified 147 energy engineering consulting firms headquartered in Johannesburg, South Africa as of September 2026 and tracks 1,791 professional contacts across them, including 594 with verified work emails. Across South Africa, Johannesburg is the largest hub for this category.

This list covers energy engineering consulting firms 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 24, 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 24, 2026 86% judged on-target in blind review

147Companies

1,791Contacts tracked

594Verified emails

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The 25 largest energy engineering consulting firms based in Johannesburg, South Africa

Ranked by team size

Top 25 of 147 energy engineering consulting firms based in Johannesburg, South Africa, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to energy engineering 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	CKR Consulting Engineers	Strong evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	51-200	254 contacts →
	Strong evidence “Founded in 1982 with its roots in Johannesburg, South Africa, CKR Consulting Engineers have grown to become one of the leading multidisciplinary engineering firms in Africa, the…” Source: RevenueBase Database · checked Sep 24, 2026
2	Jones & Wagener PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	51-200	228 contacts →
	Partial evidence “Jones & Wagener is a specialist firm of consulting engineers and scientists based in South Africa.” Source: RevenueBase Database · checked Sep 24, 2026
3	Henry Fagan Consulting Engineers & Project Managers	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	201-500	99 contacts →
	Partial evidence “At Henry Fagan Consulting Engineers & Project Managers, we are a 100% black-owned, design-focused firm with over 40 years of experience delivering innovative, sustainable, and…” Source: RevenueBase Database · checked Sep 24, 2026
4	Solid Green	Strong evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	36 contacts →
	Strong evidence “Solid Green Consulting is a young and energetic company enthusiastic about advancing sustainability in the built environment.” Source: RevenueBase Database · checked Sep 24, 2026
5	Harmattan Renewables	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	35 contacts →
	Indirect 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 24, 2026
6	Syncsystems South Africa	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	32 contacts →
	Indirect evidence “SyncSystems is owned by professional engineers with broad industrial experience, including mining, petrochem, biotech and water treatment.” Source: RevenueBase Database · checked Sep 24, 2026
7	LTM Energy PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 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 24, 2026
8	L&s Consulting PTY LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	51-200	26 contacts →
	Strong evidence “L&S Consulting (Pty) Ltd is involved in Structural and Civil Consulting Engineering, mainly for the private sector for industrial, retail and office developments.” Source: RevenueBase Database · checked Sep 24, 2026
9	Zufi Engineering PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	201-500	24 contacts →
	Partial evidence “ZUFI engineering, is an electrical and mechanical engineering company.” Source: RevenueBase Database · checked Sep 24, 2026
10	Gpwg Engineering	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	51-200	22 contacts →
	Partial evidence “GPWG Engineering is a multi-disciplinary Engineering Company with interests in Contracting activities (Civil, Electrical, Instrumentation, Solar and Mechanical) in the Mining…” Source: RevenueBase Database · checked Sep 24, 2026
11	Ipes Consulting Engineers	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	21 contacts →
	Partial evidence “Instrumented Process and Electrical Systems (IPES) was established as an independent engineering design house in 1988 in Johannesburg, South Africa.” Source: RevenueBase Database · checked Sep 24, 2026
12	Rasnco Consulting Engineers	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	201-500	20 contacts →
	Indirect evidence “We at Rasnco Investments, are a vibrant and innovative company wholly owned by black Professionals, which was established at the beginning of 2017.” Source: RevenueBase Database · checked Sep 24, 2026
13	Brundtland Consulting	Strong evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	1-10	19 contacts →
	Strong evidence “Brundtland Consulting is a South African management consulting firm specialized in climate change, green economy and renewable energy.” Source: RevenueBase Database · checked Sep 24, 2026
14	Optimult	Strong evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	18 contacts →
	Strong evidence “Optimult provides Consulting, EPC (Engineering, Procurement, Construction) and EPCM (Engineering, Procurement and Construction Management) services in a comprehensive range of…” Source: RevenueBase Database · checked Sep 24, 2026
15	ADA Consulting Engineers	Strong evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	18 contacts →
	Strong evidence “ADA Consulting Engineers offers professional consulting engineering services to clients in the development of industrial, commercial and public projects in the civil and…” Source: RevenueBase Database · checked Sep 24, 2026
16	RWP Taemane Consulting Engineers	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	17 contacts →
	Indirect evidence “Rawlins Wales was established in 1987 with offices in Sandton, Pretoria and Durban.” Source: RevenueBase Database · checked Sep 24, 2026
17	Innovation Expand	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	15 contacts →
	Partial evidence “We are a technically-led and solutions-orientated consultancy and we strive to empower you in the rapidly evolving world of electrical engineering.” Source: RevenueBase Database · checked Sep 24, 2026
18	Rieger Industrial Consultants RIC	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	15 contacts →
	Partial evidence “HELPING ORGANISATIONS ACHIEVE EXCELLENCE THROUGH INNOVATIVE SOLUTIONS RIC is a professional Industrial Engineering Firm that provides solutions to an array of organisations in a…” Source: RevenueBase Database · checked Sep 24, 2026
19	Zero Point Energy	Strong evidence	Johannesburg, South AfricaHQ checked Sep 24, 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 24, 2026
20	Nsovo Environmental Consulting	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 24, 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 24, 2026
21	Beyond Infradev PTY LTD	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	13 contacts →
	Partial evidence “Beyond Infradev (Pty) Ltd is a multi-disciplinary engineering and consultancy firm offering turnkey/EPC (Engineering, Procurement & Construction) life-cycle services for…” Source: RevenueBase Database · checked Sep 24, 2026
22	Ep3 Environmental	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	12 contacts →
	Partial 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 24, 2026
23	Projects And Industrial Engineering	Strong evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	11 contacts →
	Strong evidence “Projects & Industrial Engineering is an ISO 9001:2008 accredited professional South African multidisciplinary consulting engineering, design and project Management Company.” Source: RevenueBase Database · checked Sep 24, 2026
24	Sigma Consulting Services	Partial evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	10 contacts →
	Partial evidence “Sigma Consulting Services (Pty) Ltd is a forward-thinking and versatile South African based professional services and equipment supply company that excels in delivering innovative…” Source: RevenueBase Database · checked Sep 24, 2026
25	Sydwalt PTY LTD	Strong evidence	Johannesburg, South AfricaHQ checked Sep 24, 2026	11-50	10 contacts →
	Strong evidence “SYDWALT (Pty) Ltd is an independent engineering Consulting firm, offering a broad range of professional services.” Source: RevenueBase Database · checked Sep 24, 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: energy engineering 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 energy engineering consulting firms.
Partial evidence: Its own public description names part of energy engineering consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy engineering 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 147 energy engineering consulting firms based in Johannesburg, South Africa

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Energy engineering consulting firms based in Johannesburg, South Africa at a glance

As of Sep 24, 2026

33.2%Verified-email coverage

12.2Average contacts per company

11-50Median size (employees)

Sep 24, 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 147 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 energy engineering 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 Johannesburg, South Africa whose own description of what they do matches “energy engineering 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 energy engineering 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 energy engineering consulting firms, 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, 594 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 24, 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.

Energy engineering consulting firms by metro in South Africa

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 energy engineering 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 energy engineering consulting firms are there based in Johannesburg, South Africa?

RevenueBase identified 147 energy engineering consulting firms 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?

CKR Consulting Engineers, headquartered in Johannesburg, tops this list with the largest team on record.

Which city in South Africa has the most energy engineering consulting firms?

Johannesburg leads South Africa with 147 headquartered companies, followed by Cape Town (112) and Pretoria (92).

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 594 verified decision-maker contacts tracked across these 147 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 24, 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.