JOHANNESBURG — South Africa’s ambition to become Africa’s leading digital infrastructure hub is facing growing scrutiny over the demands that hyperscale data centres could place on electricity, water, land and municipal infrastructure, according to the Associated Press.
The debate is no longer simply about whether South Africa should attract data-centre investment. It is increasingly about whether the country has a regulatory and infrastructure framework capable of accommodating rapid growth in artificial intelligence, cloud computing and digital services without transferring high costs to communities and public utilities.
South Africa is estimated to host about 70% of Africa’s data-centre capacity, according to President Cyril Ramaphosa, making the country an increasingly important location for global technology companies seeking an African base. Major international operators, including Amazon, Microsoft and Equinix, have expanded their digital infrastructure presence in the market.
But civil-society organisations are calling for greater disclosure of the resource requirements of proposed facilities before additional developments receive approval.
The South African Human Rights Commission (SAHRC) said it had received more than 250 submissions following a call for public input into the rapid expansion of data centres, with concerns including electricity and water demand, land use, infrastructure requirements, environmental impacts and effects on surrounding communities.
Data centres become an infrastructure issue
The controversy illustrates a fundamental shift in the economics of digital infrastructure.
Data centres were traditionally treated largely as technology or commercial-property developments. The emergence of hyperscale facilities serving cloud computing and artificial intelligence workloads has changed that equation.
These facilities can require substantial electricity capacity, cooling systems, backup generation, land and network infrastructure. As a result, their economic impact increasingly extends into energy planning, water management, urban development and municipal finance.
An Equinix development in Cape Town has become one of the most prominent examples.
The proposed facility has been associated with electricity requirements of up to about 160MW, while subsequent planning documentation has referred to a larger 174MVA requirement. Civil-society groups have argued that authorities need detailed information on water consumption, electricity demand, emissions, backup generators and wider environmental impacts before such developments can be properly assessed.
The Cape Town project was approved by the city’s Municipal Planning Tribunal in July, despite objections concerning the availability of information about its resource requirements. Campaigners subsequently appealed the decision.
Cape Town’s resource dilemma
Cape Town provides a particularly sensitive test because the city has experienced both severe electricity constraints and acute water shortages.
The 2017–18 drought brought Cape Town close to the so-called “Day Zero”, when authorities warned that municipal water supplies could become critically constrained.
The city’s electricity system is considerably stronger than during South Africa’s worst load-shedding period, but the scale and concentration of new digital infrastructure has raised questions about how quickly demand could grow.
An independent analysis of Cape Town’s announced data-centre pipeline estimates that four major planned facilities could collectively require about 580MW, equivalent to roughly 34% of the city’s current peak electricity demand. That estimate includes 360MW associated with the proposed Cavaleros Cosmas Data City, 160MW across two Equinix facilities and a further 60MW associated with Teraco’s expansion.
The figures are planned or maximum capacities rather than an assertion that all facilities will simultaneously consume those amounts.
That distinction is important when assessing the economic impact.
Investment versus resource allocation
Technology companies and industry representatives argue that the criticism should not be allowed to obscure the economic benefits of digital infrastructure.
Data centres support cloud services, financial technology, telecommunications, e-commerce, artificial intelligence and other digital businesses. They can also attract foreign direct investment and strengthen a country’s position in the regional digital economy.
The industry has further argued that modern facilities can substantially reduce water consumption through advanced cooling technologies and increasingly rely on renewable electricity.
The Internet Service Providers’ Association has disputed the suggestion that data-centre growth is responsible for South Africa’s electricity constraints or rising tariffs, arguing that the country’s electricity position has improved and that operators are increasingly adopting renewable-energy solutions.
The disagreement therefore centres less on whether data centres have economic value and more on who pays for the infrastructure required to support them.
Analysts call for greater transparency
Business and technology analysts told The Zimbabwe Financial Mail that South Africa’s challenge is to establish transparent rules before the sector expands beyond the ability of municipalities and utilities to plan effectively.
“Data centres are strategic infrastructure, but they cannot be treated as ordinary commercial buildings,” one infrastructure economist said.
“If a facility requires hundreds of megawatts of electricity or significant water and network capacity, those requirements should be disclosed and incorporated into infrastructure planning before approval.”
Another technology-sector analyst said greater transparency could ultimately benefit investors.
“Serious investors generally prefer predictable regulation. Clear requirements around power, water, land, environmental impact and community obligations reduce uncertainty rather than discourage investment,” the analyst said.
That argument is particularly relevant as governments compete globally for data-centre investment.
A new calculation for African cities
The debate has implications beyond South Africa.
African governments increasingly see data centres as part of the continent’s digital transformation and as a way of attracting international capital into higher-value technology infrastructure.
But the economics of hyperscale computing create a new planning challenge for cities that already face infrastructure deficits.
The question is no longer simply whether a city can attract a data centre.
It is whether it can provide reliable electricity, telecommunications, water, roads and land without diverting scarce infrastructure away from households and other productive sectors.
For African cities, that makes data-centre policy inseparable from industrial policy.
A data centre that attracts cloud companies, fintech firms and artificial-intelligence businesses can increase productivity across an economy. But a poorly planned facility can also create concentrated demand for electricity and other infrastructure without generating commensurate local economic benefits.
Renewable energy changes the equation — but not entirely
The industry’s increasing use of renewable energy is potentially important.
Large technology companies are under pressure from investors and customers to reduce the carbon intensity of their digital infrastructure, while South Africa’s abundant solar resources create opportunities for dedicated renewable generation and power-purchase agreements.
Renewable electricity, however, does not eliminate the need for grid capacity, transmission infrastructure, backup power or land.
Nor does it automatically resolve questions surrounding cooling-water consumption.
The economic test is therefore broader than the source of electricity alone.
The policy question
For South Africa, the emerging policy challenge is to move from an investment-at-all-costs approach towards an infrastructure-aware digital-industrial strategy.
That would require developers to disclose expected electricity and water demand, backup-generation requirements, land requirements, environmental impacts and infrastructure contributions in a form that municipalities and affected communities can assess.
It would also allow policymakers to determine whether the economic value generated by a proposed facility justifies the infrastructure it consumes.
The objective should not necessarily be to stop the data-centre boom.
Rather, South Africa needs to ensure that its digital infrastructure strategy is aligned with its energy, water, urban-development and industrial policies.
As one analyst told The Zimbabwe Financial Mail: “The question should not be whether South Africa wants data centres. It should be whether South Africa can build a data-centre economy on terms that strengthen, rather than undermine, the country’s broader infrastructure base.”
That distinction could become increasingly important as artificial intelligence accelerates global demand for computing capacity.
South Africa has an opportunity to establish itself as Africa’s digital infrastructure gateway. The challenge is ensuring that the infrastructure supporting that ambition is economically, environmentally and socially sustainable.
The next phase of the data-centre boom will therefore be measured not only by the billions of dollars committed by technology companies, but by how effectively South Africa manages the electricity, water, land and infrastructure economics behind those investments.
