Company lists · Data refreshed September 2026

Top 25 Geothermal consultants based in South Africa

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 376 companies tracked

RevenueBase identified 376 geothermal consultants headquartered in South Africa as of September 2026 and tracks 3,083 professional contacts across them, including 1,090 with verified work emails. Johannesburg is the largest hub.

This list covers geothermal consultants 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 19, 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 19, 2026 86% judged on-target in blind review

376Companies

3,083Contacts tracked

1,090Verified emails

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

The 25 largest geothermal consultants based in South Africa

Ranked by team size

Top 25 of 376 geothermal consultants based in South Africa, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal 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	Jones & Wagener PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	228 contacts →
	Indirect evidence “Jones & Wagener is a specialist firm of consulting engineers and scientists based in South Africa.” Source: RevenueBase Database · checked Sep 19, 2026
2	Knight Piesold Southern Africa	Indirect evidence	Sandton, South AfricaHQ checked Sep 19, 2026	201-500	193 contacts →
	Indirect evidence “Knight Piésold is a global consulting firm that provides specialised services to the mining, power, water resources and infrastructure industries.” Source: RevenueBase Database · checked Sep 19, 2026
3	IX Engineers PTY LTD	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 19, 2026	201-500	136 contacts →
	Indirect evidence “iX engineers is a proudly South African multi-disciplinary consulting engineering company with a focus on five key market sectors, being; Water, Energy, Transport, Development…” Source: RevenueBase Database · checked Sep 19, 2026
4	The MSA Group	Indirect evidence	Victory Park, South AfricaHQ checked Sep 19, 2026	51-200	110 contacts →
	Indirect evidence “The MSA Group is a leading provider of exploration, geology, mineral resource and reserve estimation, mining and environmental consulting services to the mining industry.” Source: RevenueBase Database · checked Sep 19, 2026
5	MOTLA	Indirect evidence	City Of Tshwane, South AfricaHQ checked Sep 19, 2026	51-200	82 contacts →
	Indirect evidence “South Africa's energy future is being built, one engineered solution at a time.” Source: RevenueBase Database · checked Sep 19, 2026
6	Semane Engineering Solutions PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	501-1,000	71 contacts →
	Indirect evidence “Semane Engineering Solutions (Pty) Ltd is an independent South African multi-disciplinary consulting company that provides project management and engineering solutions in…” Source: RevenueBase Database · checked Sep 19, 2026
7	Lukhozi Consulting Engineers PTY LTD	Partial evidence	East London, South AfricaHQ checked Sep 19, 2026	51-200	69 contacts →
	Partial evidence “Lukhozi Consulting Engineers (Pty) Ltd is a Level 1 B-BBEE contributor and a leading multi-disciplinary professional engineering consultancy that offers a professional service…” Source: RevenueBase Database · checked Sep 19, 2026
8	GCS Water & Environmental Consultants PTY LTD	Partial evidence	Rivonia, South AfricaHQ checked Sep 19, 2026	11-50	63 contacts →
	Partial evidence “Established in 1987, GCS (Pty) Ltd is an independent consultancy offering a range of professional services within the fields of water, environmental and earth sciences.” Source: RevenueBase Database · checked Sep 19, 2026
9	VBKOM	Indirect evidence	Centurion, South AfricaHQ checked Sep 19, 2026	11-50	60 contacts →
	Indirect evidence “At VBKOM, we aim to support organizations within the mining and capital intensive industries to make the best possible decisions through our leadership, expertise and innovative…” Source: RevenueBase Database · checked Sep 19, 2026
10	ARQ Consulting Engineers PTY LTD	Indirect evidence	Pretoria, South AfricaHQ checked Sep 19, 2026	11-50	52 contacts →
	Indirect evidence “ARQ is an award winning consulting engineering firm with a reputation as being a leader in South Africa in our specialist fields of dams & hydro, geotech and bridges.” Source: RevenueBase Database · checked Sep 19, 2026
11	Open House Management Solutions	Indirect evidence	Potchefstroom, South AfricaHQ checked Sep 19, 2026	11-50	47 contacts →
	Indirect evidence “Open House Management Solutions is a South-African based, Geotechnical Engineering and Seismological services provider.” Source: RevenueBase Database · checked Sep 19, 2026
12	Singo Consulting	Partial evidence	Emalahleni, South AfricaHQ checked Sep 19, 2026	51-200	44 contacts →
	Partial evidence “Singo Consulting (Pty) Ltd is a private independent research consultancy and advisory company based in eMalahleni (Witbank), holding no equity in any project and is owned by the…” Source: RevenueBase Database · checked Sep 19, 2026
13	A & B Global Mining	Partial evidence	Centurion, South AfricaHQ checked Sep 19, 2026	51-200	42 contacts →
	Partial evidence “ABGM is a leading niche mining consultancy and provides a world-class service to our clients.” Source: RevenueBase Database · checked Sep 19, 2026
14	Franki Africa PTY LTD	Indirect evidence	Ottery, South AfricaHQ checked Sep 19, 2026	51-200	37 contacts →
	Indirect evidence “Franki is the oldest and most established specialist geotechnical contractor in Sub-Saharan Africa.” Source: RevenueBase Database · checked Sep 19, 2026
15	Umvoto	Partial evidence	Cape Town, South AfricaHQ checked Sep 19, 2026	11-50	37 contacts →
	Partial evidence “Umvoto is an earth sciences consultancy, specializing in environmental resource development, management and sustainability.” Source: RevenueBase Database · checked Sep 19, 2026
16	LSL Consulting	Indirect evidence	Bryanston, South AfricaHQ checked Sep 19, 2026	51-200	36 contacts →
	Indirect evidence “LSL Consulting (Pty) Ltd is a specialist Consulting Engineers and Project Manager company in the materials handling, process, steel plants, synfuel and power generating industries.” Source: RevenueBase Database · checked Sep 19, 2026
17	SGS Bateman	Indirect evidence	Greenstone Hill, South AfricaHQ checked Sep 19, 2026	n/a	36 contacts →
	Indirect evidence “SGS Bateman is a global operating company in the SGS Natural Resources Division, part of the SGS Group - world-renowned for inspection, verification, testing, and certification…” Source: RevenueBase Database · checked Sep 19, 2026
18	Geoss South Africa	Indirect evidence	Stellenbosch, South AfricaHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “GEOSS, established on 1 March 2001, specializes in all aspects of hydrogeology, including: • Groundwater exploration (borehole siting, drilling supervision with logging, pumping…” Source: RevenueBase Database · checked Sep 19, 2026
19	Venter Consulting Engineers	Indirect evidence	Centurion, South AfricaHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “Venter Consulting Engineers is a small group of talented professionals with a passion for precision engineering.” Source: RevenueBase Database · checked Sep 19, 2026
20	Sharpshell Engineering	Indirect evidence	Midrand, South AfricaHQ checked Sep 19, 2026	51-200	31 contacts →
	Indirect evidence “Engineering Design Consulting Construction & Management Maintenance Engineering (Civil,Electrical,Mechanical,Structural) Fire Protection Technologies for Buildings and Plants…” Source: RevenueBase Database · checked Sep 19, 2026
21	Geotheta Consulting Engineers And Scientists	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	51-200	28 contacts →
	Indirect evidence “Tailings management today requires more than engineering excellence, it demands independent oversight, structured governance, and defensible risk frameworks.” Source: RevenueBase Database · checked Sep 19, 2026
22	Sound Mining	Partial evidence	Edenburg, South AfricaHQ checked Sep 19, 2026	11-50	26 contacts →
	Partial evidence “Founded in 2004, Sound Mining is an international mining consultancy that provides services to the minerals industry across six continents.” Source: RevenueBase Database · checked Sep 19, 2026
23	Peragage	Partial evidence	City Of Tshwane, South AfricaHQ checked Sep 19, 2026	11-50	25 contacts →
	Partial evidence “PeraGage is a Leading, Trusted and the Preferred specialist firm of geo-consultants including hydrogeologists, geotechnical engineers and engineering geologists operating…” Source: RevenueBase Database · checked Sep 19, 2026
24	Plantech PTY LTD	Indirect evidence	Pretoria, South AfricaHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “Plantech (Pty) Ltd is a consulting engineering firm established in 1982 by Hein Schuld, James Theron and Peet Olivier.” Source: RevenueBase Database · checked Sep 19, 2026
25	Rafuni PTY LTD	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Rafuni offers Geotechnical, Geological and Environmental Consulting Services.” Source: RevenueBase Database · checked Sep 19, 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: geothermal 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 geothermal consultants.
Partial evidence: Its own public description names part of geothermal consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal 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 376 geothermal consultants based in South Africa

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,090 reachable decision-makers.

Free signup · no credit card

View the full list →

Geothermal consultants based in South Africa at a glance

As of Sep 19, 2026

35.4%Verified-email coverage

8.2Average contacts per company

1-10Median size (employees)

15.7%Largest-city concentration · Johannesburg

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

230

11-50

113

51-200

201-500

501-1,000

1,001-5,000

10001+

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 376 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 geothermal 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 South Africa whose own description of what they do matches “geothermal 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 geothermal 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 geothermal consultants, 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, 1,090 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 19, 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.

Geothermal consultants 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 geothermal 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 geothermal consultants are there based in South Africa?

RevenueBase identified 376 geothermal consultants 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?

Jones & Wagener PTY LTD, headquartered in Johannesburg, tops this list with the largest team on record.

Which city has the most geothermal consultants?

Johannesburg leads with 59 headquartered companies, followed by Pretoria (36) and Cape Town (35).

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 1,090 verified decision-maker contacts tracked across these 376 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 376 geothermal consultants based in South Africa. Start with a free account, no credit card.

Download this list →

Related lists

Geothermal consultants 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.