Nigeria's Telcos Fixed the Revenue Problem. Now Comes the Cost Problem

Data demand is rising and margins are recovering, but the big players in Nigeria telecoms show that the growth story is still tied to how well operators manage power, tower leases and infrastructure costs.

Nigeria's telecom operators are no longer telling a survival story. The worst of the 2024 earnings shock has passed for the largest players, helped by tariff relief, a less disorderly currency market, and tighter commercial discipline. The harder question is what survives after the recovery is stripped of its temporary support of higher prices, calmer FX, and renegotiated contracts. MTN Nigeria's Q1 2026 earnings release gave the market the clearest version of that tension. The company reported total revenue of N1.498 trillion (N1.058 trillion | Q1 2025), EBITDA of N828.3 billion (N492.7 billion | Q1 2025) and profit after tax of N355.5 billion (N133.7 billion | Q1 2025) for the quarter ended March 2026. Data revenue rose 56.2%, fintech revenue increased 77.9%, active data users rose 9.5% to 55 million, and EBITDA margin rose to 55.3%. On the face of it, this was a powerful recovery buoyed by stronger usage, improved pricing and a sharp rebound in earnings.

The cost disclosure was more important than the headline profit numbers. MTN said the energy component of its tower lease costs is linked to the prior quarter's average Lagos ex-depot diesel price. If diesel averages N2,000 per litre in the second half of 2026, the company estimates that full-year EBITDA margin could be reduced by 1.8 to 2.0 percentage points. In a business now showing strong operating margins, that is not an accounting footnote. It is a reminder that part of Nigeria's telecom recovery still depends on the price of keeping thousands of dispersed sites powered.

That does not mean diesel is the whole story. The Nigerian Communications Commission's January 2025 tariff adjustment changed the revenue base after years in which prices had lagged inflation, currency depreciation, and energy costs. MTN has also pointed to revised IHS lease terms, relative currency stability, and efficiency measures as part of the improvement in cost pressure in its H1 2025 results. The sector is recovering for several reasons at once. Diesel remains the most visible swing factor, but the real investment issue is broader: how much of the new revenue can operators keep after power, leases, spectrum, capex and service-quality demands have been paid for?

Market Signals

Airtel Africa's audited results for the year ended 31 March 2026 show why the sector should not be read as a one-way diesel squeeze. In Nigeria mobile services, Airtel reported revenue of $1.598 billion, compared with $1.045 billion in the year ended 31 March 2025; underlying EBITDA of $924 million, compared with $522 million; and an EBITDA margin of 57.8%, up from 50.0%. Data revenue in Nigeria grew 63.6% in constant currency, data usage per customer rose to 11.0GB per month from 8.4GB, and smartphone penetration reached 54.9%.

Those figures are not a contradiction of MTN's diesel warning. They show the other side of it. Airtel attributed Nigeria's stronger margin performance to revenue growth, cost efficiency and stable fuel prices. When fuel stabilizes, higher tariffs and stronger data usage flow through more cleanly. When fuel rises sharply, the same network economics can absorb part of the benefit. The risk is not simply that diesel is high. The risk is that fuel, FX, and tower costs can take back operating leverage just when subscriber demand is improving.

The tower layer is where the story becomes more strategic. Operators own the customer relationship, but much of the physical network sits inside an infrastructure system of towers, power equipment, leases and service-level commitments. In Nigeria, that system is not only carrying telecom equipment. It is managing power reliability in a weak-grid economy.

IHS Holding's fourth-quarter and full-year 2025 results explain how those costs move through the sector. Its Nigeria segment reported Q4 revenue of $269.1 million and segment adjusted EBITDA of $169.7 million. IHS said organic revenue in Nigeria declined largely because revenues linked to foreign-exchange resets and diesel prices fell as the naira appreciated. In plain terms, some tower contracts include mechanisms that adjust revenues for currency movements and diesel costs. Those mechanisms can lift IHS's organic revenue when naira weakness or higher diesel prices trigger contractual resets or pass-through adjustments; they can also reduce organic revenue when the naira strengthens or diesel-linked revenues fall. The same quarter also benefited from lower diesel and electricity costs. Energy and FX are therefore not static risks. They are built into tower contracts and can move reported earnings in both directions.

MTN Group's proposed acquisition of IHS Towers brings that tower question to the centre of the investment case. Announced in February 2026, the transaction would increase MTN's ownership of IHS to 100%, subject to shareholder and regulatory approvals. MTN said the deal would allow it to internalize margins currently paid to IHS, improve cost predictability, and benefit from third-party tower revenues. This is the clearest sign that the sector's response has moved beyond tariff increases and diesel management. MTN is attempting to reduce the number of critical cost variables it does not control.

That is the strategic reversal. For years, telecom operators across Africa pursued asset-light models, selling or outsourcing towers while leasing back infrastructure from specialist tower companies. The model reduced direct ownership burden, but it also left operators exposed to lease structures, power pass-throughs, and contract resets. MTN's proposed deal suggests that, at a certain scale, control of the tower layer can become more valuable than the simplicity of outsourcing it. In a market where power is unreliable, the tower is not a passive asset. It is part of the cost engine.

The Federal Ministry of Communications, Innovation and Digital Economy has said it will assess the proposed transaction, including its implications for consumers, competition, investment and sustainability. That regulatory interest is justified. If a major operator owns a large tower platform, the key public-interest questions will be whether rival operators continue to receive fair access, whether network quality improves, and whether infrastructure control leads to lower long-term costs rather than merely shifting value within a corporate group.

For investors in MTN Nigeria, the distinction matters. The proposed buyer is MTN Group, not the listed Nigerian operating company. That means the tower upside should not be treated as an automatic transfer to MTN Nigeria minority shareholders. The practical question is narrower and more important: if the transaction closes, will future Nigerian tower lease terms, power-cost pass-throughs, or related-party arrangements change in ways that improve MTN Nigeria's cash flow? Public disclosures do not yet answer that question. But the strategic direction is clear: the sector is moving from cost pass-through to cost control.

The same cost-control logic is visible elsewhere. MTN and Airtel's network-sharing agreement in Nigeria and Uganda is designed to reduce duplicated investment and improve returns on expensive network assets. In 2025, the NCC approved a three-year national roaming agreement between MTN Nigeria and Emerging Markets Telecommunications Services Limited, then trading as 9mobile and now T2 Mobile, allowing 9mobile subscribers to roam on MTN Nigeria's network. For 9mobile/T2, the arrangement improves coverage without requiring a costly parallel network rollout. For MTN, it monetizes the scale of its infrastructure and deepens its role as a wholesale network platform. MTN Nigeria has also disclosed NCC approval to lease spectrum from T2 Mobile, a move that supports traffic management and customer experience without relying only on new spectrum acquisition. These are not isolated technical arrangements. They point to a more concentrated industry playbook: share where duplication destroys returns, lease where asset access is more efficient than ownership, and own where control of the cost base is strategically valuable.

Regulation remains the second constraint. The 2025 tariff reset repaired part of the sector's economics, but it also raised the political visibility of telecom pricing. Consumers are paying more and therefore regulators will be more sensitive to service quality, transparent pricing, and the distribution of benefits from infrastructure consolidation or sharing. Higher tariffs can support investment, but they are not a blank cheque. The sector has been given more room to earn; it will be expected to show that the room is translating into better service and wider coverage.

AFC-linked estimates cited by Nairametrics put Nigerian telecom diesel consumption at more than 40 million litres per month, costing the industry more than $350 million annually. That figure explains why diesel remains central even after the tariff reset. The Nigerian Communications Commission and the Rural Electrification Agency have consequently moved renewable power for telecom infrastructure onto the policy agenda. That is a sensible direction, especially for rural and semi-urban sites where power economics are weakest. But announcements will not change the margin story unless they translate into funded deployments, reliable site-level power, and lower diesel intensity.

Domestic refining does not automatically remove the risk either. Policy support for local refining may improve supply security over time, but diesel pricing can still be shaped by crude allocation, FX, import policy, and distribution costs. For operators and tower companies, the issue is not only whether diesel is available. It is whether the cost of diesel is stable enough to plan network expansion, tariffs, and lease economics with confidence.

What Investors Should Watch

This is the next test of the telecom recovery story. The winners will not simply be the companies with the fastest subscriber growth or the largest data traffic. They will be the operators that can turn data growth into cash flow after paying for power, leases, spectrum, capex, and customer service. In a market where the grid remains weak and consumer pricing is politically sensitive, the quality of earnings will come from operational control as much as from revenue growth.

MTN's diesel sensitivity analysis should therefore be read as a sector signal, not the whole story. Airtel shows how fuel stability can support margin expansion. IHS shows the complex process through which energy and FX pricing move through the tower layer. MTN's proposed acquisition of IHS shows that ownership of infrastructure has become a strategic lever. The MTN/9mobile roaming arrangement points in the same direction: in a high-cost market, coverage can no longer depend only on each operator building and powering a parallel network. Nigeria's telecom recovery is real, but it is not a clean digital-growth story. It is a pricing, power, and infrastructure-control story, and the durability of the boom will depend on how well the sector manages all three.