Tower Companies

The Hidden Owners of South Africa's Telecommunications Infrastructure

When most people see a cellular tower, they naturally assume it belongs to the mobile network whose logo appears on the equipment. While this was often true in the early years of mobile telecommunications, today's industry operates very differently.

Over the past two decades, telecommunications infrastructure has evolved into a specialised asset class. Around the world, and increasingly in South Africa, Mobile Network Operators (MNOs) have separated the ownership of their physical infrastructure from the operation of their communications networks.

As a result, many towers are now owned, managed and maintained by independent tower companies, while multiple Mobile Network Operators lease space on those towers to provide their services.

This distinction has significant implications for Traditional Authorities, Communal Property Associations (CPAs), municipalities, private landowners and institutions hosting telecommunications infrastructure.

Understanding who owns the tower, who occupies it and who is responsible for lease payments is essential for effective commercial management and informed decision-making.

This chapter explores the rise of tower companies, their business model, their relationship with Mobile Network Operators, and why they play a pivotal role in South Africa's digital infrastructure ecosystem.

What Is a Tower Company?

A tower company, often referred to as a TowerCo, is a business that owns, develops, acquires or manages passive telecommunications infrastructure.

Unlike Mobile Network Operators, tower companies generally do not provide voice, messaging or internet services directly to consumers.

Instead, they provide the physical infrastructure that enables operators to install their communications equipment.

Typical assets owned or managed by tower companies include:

• Telecommunications towers

• Monopoles

• Rooftop structures

• Equipment shelters

• Power systems

• Backup generators

• Battery installations

• Site fencing

• Access roads

• Security systems

• Ground leases

Their business model focuses on leasing infrastructure to one or more telecommunications operators.

Why Did Tower Companies Emerge?

Historically, each Mobile Network Operator constructed and maintained its own network of towers.

While this approach provided operational control, it also required substantial capital investment and often resulted in duplicate infrastructure.

Imagine four operators each building a separate tower in the same village.

This approach created:

• Higher construction costs

• Increased maintenance expenses

• Visual pollution

• Greater environmental impact

• Inefficient land utilisation

As the telecommunications sector matured, operators recognised that sharing passive infrastructure could reduce costs while maintaining competition.

This led to the emergence of independent tower companies.

Passive vs Active Infrastructure

One of the most important concepts in telecommunications is the distinction between passive infrastructure and active infrastructure.

Passive Infrastructure

Passive infrastructure refers to the physical assets that support telecommunications equipment but do not process communications themselves.

Examples include:

• Towers

• Monopoles

• Rooftop frames

• Equipment shelters

• Power systems

• Backup generators

• Site fencing

• Access roads

• Foundations

• Cable trays

These assets create the physical environment in which network equipment operates.

Active Infrastructure

Active infrastructure consists of electronic equipment that generates, processes or transmits communications.

Examples include:

• Baseband Units (BBUs)

• Remote Radio Units (RRUs)

• Antennas

• Microwave radios

• Routers

• Optical transmission equipment

• Network software

• Core network systems

Active equipment is generally owned and operated by Mobile Network Operators.

How Tower Companies Make Money

Unlike Mobile Network Operators, tower companies generate revenue primarily through infrastructure leasing.

Their income may include:

Tower Rental

Charging operators for mounting antennas and radio equipment on the tower.

Ground Space Rental

Providing space for equipment shelters and power systems.

Power Services

Supplying electricity, generators and battery backup.

Site Maintenance

Maintaining the tower and supporting infrastructure.

Co-location Fees

Leasing the same tower to multiple operators.

Build-to-Suit Projects

Constructing new towers specifically for operator requirements.

The ability to accommodate multiple tenants on one tower significantly improves profitability.

The Economics of Co-location

One of the greatest advantages of tower companies is infrastructure sharing.

Consider the following example.

Without a tower company:

Operator A builds one tower.

Operator B builds another tower.

Operator C builds a third tower.

Operator D builds a fourth tower.

Total towers:

Four

With a tower company:

One tower supports:

• Operator A

• Operator B

• Operator C

• Operator D

Total towers:

One

The result is:

• Lower infrastructure costs

• Faster deployment

• Reduced environmental impact

• Better land utilisation

• Improved network expansion

This concept is known as co-location, which will be explored in greater detail in a later chapter.

The Role of Tower Companies in South Africa

South Africa has one of Africa's most advanced telecommunications markets.

As demand for mobile data has increased, tower companies have become critical infrastructure partners.

Their responsibilities often include:

• Developing new telecommunications sites.

• Acquiring existing towers.

• Managing infrastructure portfolios.

• Leasing tower space.

• Maintaining passive infrastructure.

• Managing site access.

• Ensuring structural integrity.

• Supporting network expansion.

Tower companies enable Mobile Network Operators to focus on customer service, innovation and network performance while specialist infrastructure companies manage the physical assets.

Who Pays the Landowner?

One of the most common questions raised by landowners is:

"Who should pay the rental?"

The answer depends entirely on the contractual arrangements.

Possible scenarios include:

Scenario 1

The Mobile Network Operator leases the land directly.

The operator pays the landowner.

Scenario 2

The tower company leases the land.

The tower company pays the landowner.

Scenario 3

A site acquisition company entered into the original agreement on behalf of the operator or tower company.

Payments are later administered by another entity.

Scenario 4

Ownership of the tower changes due to a commercial transaction.

The lease may be assigned to the new owner, subject to the terms of the agreement and applicable law.

This is why reviewing the actual lease documentation is essential before making assumptions about responsibility for rental payments.

Site Acquisition

Before a tower can be constructed, several steps are generally required.

These include:

• Identifying network demand.

• Radio planning.

• Selecting a suitable site.

• Negotiating with landowners.

• Conducting environmental assessments (where applicable).

• Obtaining municipal approvals.

• Securing land rights.

• Completing engineering design.

• Constructing infrastructure.

• Installing telecommunications equipment.

Tower companies often coordinate many of these activities in collaboration with Mobile Network Operators and specialist consultants.

Tower Ownership Can Change

Telecommunications infrastructure is frequently bought and sold.

An operator may decide to sell thousands of towers to an independent infrastructure company while continuing to use those towers under long-term lease arrangements.

From the landowner's perspective, the physical tower may remain unchanged, yet the legal entity responsible for the infrastructure and lease obligations may differ from the original contracting party.

Regularly reviewing lease documentation and maintaining an up-to-date infrastructure register helps ensure that governance records accurately reflect these changes.

Infrastructure Lifecycle

Every telecommunications site follows a lifecycle.

Planning

Technical studies identify network requirements.

Acquisition

Land rights are secured.

Construction

Infrastructure is built.

Commissioning

Equipment becomes operational.

Operation

The site delivers communications services.

Upgrades

Technology evolves from 2G to 3G, 4G LTE and 5G.

Renewal

Lease agreements are reviewed and extended where appropriate.

Decommissioning

Equipment is removed when no longer required.

Understanding this lifecycle enables landowners to anticipate future developments, including upgrades, renewals and changes in site occupancy.

Why This Matters to Landowners

For landowners and community governance structures, understanding the role of tower companies supports informed decision-making.

Questions worth considering include:

• Who owns the tower?

• Who owns the telecommunications equipment?

• Who occupies the site?

• Who is responsible for rental payments?

• Is the tower shared by multiple operators?

• Has ownership changed since the original agreement?

• Are lease terms aligned with current commercial arrangements?

• Are all site occupants authorised?

These questions form the basis of a comprehensive telecommunications infrastructure audit.

Future Trends

The TowerCo sector continues to evolve.

Emerging trends include:

• Increased infrastructure sharing.

• Expansion of rural connectivity.

• Renewable energy integration.

• Smart tower technology.

• AI-assisted infrastructure monitoring.

• Edge computing.

• Neutral host networks.

• 5G-ready infrastructure.

• Greater demand for fibre-connected sites.

Tower companies will remain central to South Africa's digital transformation and future network expansion.

Key Takeaways

• Tower companies own or manage passive telecommunications infrastructure rather than providing mobile services directly to consumers.

• Passive infrastructure includes towers, shelters, power systems and supporting facilities, while active infrastructure includes radio and network equipment.

• Infrastructure sharing enables multiple Mobile Network Operators to use a single tower, reducing costs and improving efficiency.

• The party responsible for lease payments depends on the contractual arrangements and may not always be the Mobile Network Operator.

• Tower ownership can change over time through commercial transactions, making regular lease reviews and infrastructure audits essential.

• Understanding the distinction between operators, tower companies and landowners is fundamental to effective governance and commercial management.