Company lists · Data refreshed October 2026

Top 11 Grid infrastructure engineering firms based in Johannesburg, South Africa

RevenueBase identified 29 company matches for grid infrastructure engineering firms associated with Johannesburg, South Africa as of October 2026 and tracks 607 professional contacts across them, including 224 with verified work emails. Across South Africa, Johannesburg is the largest hub for this category.

This list covers company matches for grid infrastructure engineering firms associated with Johannesburg, South Africa, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 13, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Oct 13, 2026 How this list was built
29Companies
607Contacts tracked
224Verified emails
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The 11 largest grid infrastructure engineering firms based in Johannesburg, South Africa

Ranked by team size
Top 11 of 29 company matches for grid infrastructure engineering firms based in Johannesburg, South Africa, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 13, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 20261,001-5,000267 contacts →

Exact match

“The CONCO Group is Africa’s largest power infrastructure service provider with three decades of Africa-wide experience in transmission, distribution and power infrastructure…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
2Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 202651-20099 contacts →

Exact match

“Trans-Africa Projects, specialist in High Voltage Services was established in 1995 as a joint venture between Fluor and Eskom to commercially apply resources and expertise in…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
3Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 202651-20030 contacts →

Exact match

“High Voltage Technology SA (Pty) Ltd (“HVT”) provides “Can do” solutions for tough problems in the electricity transmission & distribution industry.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
4Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 20261-1020 contacts →

Exact match

“Resultant Consulting Engineers is a dynamic engineering firm specialising in structural design in the mining and heavy industrial sectors.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
5Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 202611-5019 contacts →

Exact match

“Gridbow is an Award Winning Electrical Infrastructure, Civil Engineering, Consulting, Maintenance and General Services Contracting Company.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
6Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 202651-20019 contacts →

Exact match

“GPWG Engineering is a multi-disciplinary Engineering Company with interests in Contracting activities (Civil, Electrical, Instrumentation, Solar and Mechanical) in the Mining…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
7Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 202611-5018 contacts →

Exact match

“Instrumented Process and Electrical Systems (IPES) was established as an independent engineering design house in 1988 in Johannesburg, South Africa.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
8Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 202611-5015 contacts →

Exact match

“We are a technically-led and solutions-orientated consultancy and we strive to empower you in the rapidly evolving world of electrical engineering.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
9Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 202611-5012 contacts →

Exact match

“Our services- Full Self-Build and Own-Build Services- Network planning and master plans- System modelling and load flow simulations, network optimization, load forecasting…”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
10Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 20261-104 contacts →

Exact match

“Welcome to TEC-Industry Solutions We're innovators of a higher standard, using cutting-edge technologies to lead the industry forward.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase
11Exact matchJohannesburg, South AfricaHQ recorded Oct 13, 202611-503 contacts →

Exact match

“Lineit Components was established in South Africa in 2006 with the primary focus of serving the industrial medium and high voltage electrical markets in Southern Africa and abroad.”

Recorded in the RevenueBase company graph · Oct 13, 2026 · View company records in RevenueBase

Showing 11 of 29 grid infrastructure engineering firms based in Johannesburg, South Africa

See the full list, filter by size, metro and specialty, and access 224 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Grid infrastructure engineering firms based in Johannesburg, South Africa at a glance

As of Oct 13, 2026
36.9%Verified-email coverage
20.9Average contacts per company
11-50Median size (employees)
Oct 13, 2026Page data refreshed

Companies by employee count

1-10
10
11-50
11
51-200
5
201-500
2
1,001-5,000
1

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 29 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Johannesburg, South Africa whose business descriptions match “grid infrastructure engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 224 professional contacts with verified work emails across the full matched dataset. 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 October 13, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “grid infrastructure engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many grid infrastructure engineering firms are there based in Johannesburg, South Africa?

RevenueBase identified 29 company matches for grid infrastructure engineering firms associated with Johannesburg, South Africa as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Consolidated Power Project PTY Ltd. In Business Rescue tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in South Africa has the most grid infrastructure engineering firms?

Johannesburg leads South Africa with 29 company records, followed by Cape Town (22) and Pretoria (17).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 224 professional contacts with verified work emails tracked across these 29 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 13, 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 SmartSearch, 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.