Nigeria’s electricity sector is frequently described as suffering from inadequate generation capacity, fragile transmission infrastructure and persistent grid instability. These challenges are real. Yet they distract from a more fundamental problem; one that sits quietly beneath every tariff debate, every subsidy intervention and every power sector reform.
It is a problem of cash.
Despite billions of dollars invested in the Nigerian Electricity Supply Industry (NESI), it continues to accumulate debt at an alarming rate. Generation companies continue to carry substantial legacy receivables, while significant historical obligations to gas suppliers have also accumulated across the value chain. Although the Federal Government has commenced programmes to settle verified legacy debts, the underlying liquidity challenge that created these obligations remains a critical issue for the sector.
Investors remain cautious. Meanwhile, electricity supply has struggled to improve at the pace consumers expect. The question is not whether the sector has a debt problem. It clearly does.
The more important question is why the debt continues to grow.
This article argues that the answer lies in the industry’s inability to consistently convert electricity supplied into cash collected. Nigeria’s power sector is not fundamentally capital constrained; it is cash flow constrained. Every billing cycle creates a liquidity gap that cascades through the value chain, gradually reappearing as unpaid invoices, gas supply arrears, deferred maintenance, government subsidies and mounting industry debt.
Understanding this requires first understanding how money was designed to flow through Nigeria’s electricity market.
The Cash Waterfall
Electricity is one of the few industries where almost every major cost is incurred before revenue is collected. Gas suppliers deliver fuel before they are paid. Generation companies produce electricity before they are paid. Transmission companies wheel power before they are paid. Distribution companies deliver electricity before they recover a single Naira from customers. The entire market therefore runs on one assumption: that cash collected at the retail end will flow back through the value chain quickly enough to reimburse every participant.
To facilitate this, the market was designed as a bottom-up cash waterfall, where cash collected at the retail end of the market finances every participant upstream.
The principle underpinning this structure is simple: every participant in the value chain depends on the participant immediately below it for liquidity.
Customers are therefore not merely end-users of electricity; they are the primary source of funding for the entire market. The revenue collected by Distribution Companies (DisCos) finances market remittances to the Nigerian Bulk Electricity Trading Plc (NBET) and the Market Operator (MO). NBET, in turn, settles Generation Companies (GenCos), which rely on these payments to purchase gas, service debt, maintain generation assets, and meet contractual obligations to financiers, OEMs, and service providers.
Where the cash disappears
The financial challenges facing Nigeria’s electricity sector do not begin when customers fail to pay their bills. They begin much earlier. Between the point where electricity is generated and the point where cash is remitted upstream, value is progressively eroded through a series of commercial, technical and regulatory leakages. By the time cash reaches the top of the value chain, only a fraction of the original value of electricity supplied remains.
These leakages occur in three distinct stages.
Stage 1: Electricity Delivered but Not Billed
The first revenue loss occurs before collections even begin. Distribution Companies cannot collect revenue for electricity that is never billed. This is reflected in the industry’s billing efficiency, which measures the proportion of electricity delivered that is successfully converted into customer invoices.
Several factors contribute to this gap, including:
- Inadequate metering coverage
- Energy theft and illegal connections
- Unregistered or incorrectly enumerated customers
- Technical losses across distribution networks
- Meter bypass and energy diversion
- Weak energy accounting and commercial systems
The numbers tell the story
Nigeria’s power sector is fundamentally a liquidity-constrained market. Poor collections and billing inefficiencies are the primary mechanisms through which that liquidity constraint manifests, amplifying every other operational challenge in the sector.
In Q4 2025, the industry recorded a billing efficiency of 82.03% and a collection efficiency of 79.36%. Viewed independently, these figures suggest a market making reasonable progress. But they measure two different stages of the same revenue journey. When combined, they reveal a more consequential picture: the industry effectively converted only about 65% of the electricity supplied into cash.
The consequence is straightforward. Electricity has already been generated, transmitted and distributed. The associated costs have already been incurred by GenCos, TCN and DisCos. Yet a portion of that electricity never becomes a bill, meaning there is no opportunity to recover the value through customer payments.
Stage 2: Electricity Billed but Not Collected
The second leakage occurs after invoices have been issued. Even where customers are successfully billed, not every invoice is paid. Collection efficiency measures the proportion of billed revenue that is ultimately recovered by Distribution Companies.
Between 2023 and Q4 2025 alone, Distribution Companies failed to collect over ₦1.22 trillion in billed revenues. While these figures represent annual collection shortfalls rather than cumulative receivables, they illustrate the scale of liquidity that never entered the market. Every Naira not recovered reduced the funds available for market settlement, increasing the burden on Generation Companies, gas suppliers, financiers and, ultimately, the Federal Government through subsidy support and intervention funding.
Collection performance is affected by several factors, including:
- Customer inability or unwillingness to pay
- Estimated billing disputes
- Weak enforcement of payment obligations
- Arrears owed by public sector institutions
- Inefficient debt recovery processes
- Poor customer confidence resulting from unreliable electricity supply
One unpaid customer invoice may appear insignificant. Across millions of customers, however, the effect is magnified. Every Naira that fails to be billed or collected is a Naira that cannot be remitted upstream. What starts as an unpaid electricity bill at the customer level eventually becomes an unpaid generation invoice, a delayed gas payment, deferred maintenance, postponed capital investment and, ultimately, another addition to the industry’s debt stock.
Stage 3: Cash Collected but Not Fully Remitted
The third leakage occurs within the market settlement process. Distribution Companies are required to remit market revenues to the Nigerian Bulk Electricity Trading Plc (NBET) and the Market Operator to enable settlement across the value chain. However, because collections are often insufficient to cover market obligations, remittance performance also falls short.
This creates another layer of liquidity pressure.
Lower remittances mean:
- NBET cannot fully settle GenCos.
- GenCos accumulate receivables.
- Gas suppliers experience payment delays.
- Banks and financiers face higher credit risk.
- Investment in maintenance and capacity expansion is deferred.
This is where commercial inefficiencies evolve into sector-wide financial distress.
What This Means for Sector Reform
The findings of this analysis have important implications for future electricity market reforms. Much of the public debate continues to focus on increasing generation capacity, expanding transmission infrastructure and implementing cost-reflective tariffs. While these interventions remain necessary, they do not address the underlying mechanism through which industry debt is created.
The evidence suggests that the financial sustainability of the Nigerian Electricity Supply Industry depends on improving its ability to convert electricity supplied into cash collected and cash collected into timely market settlements. Every reform should therefore be evaluated not only on its impact on megawatts generated, but on its ability to improve the market’s cash conversion cycle.
Electricity can only sustain the market when it completes a simple journey: it must be delivered, accurately billed, successfully collected and promptly remitted. Today, that journey breaks down at multiple points. The result is a persistent liquidity deficit that is transferred upstream as unpaid invoices, subsidy obligations and industry debt.
Further reading
https://nerc.gov.ng/wp-content/uploads/2026/04/2025_Q4-Report.pdf
https://www.reuters.com/business/energy/nigerias-grid-capacity-shrinks-with-gas-supply-43-2026-02-27