Recent developments in South Africa have brought significant attention to Eskom’s warnings about the threats posed by rising municipal arrears, with concerns extending beyond financial stress to potential impacts on service delivery, infrastructure maintenance, and even environmental outcomes such as pollution. Eskom, the stateowned power utility that supplies most of the country’s electricity, has been grappling with outstanding debt owed by municipalities for electricity supplied, which has grown to almost R100 billion and could far exceed that figure in the coming years. These arrears have implications not only for Eskom’s ability to operate sustainably, but also for the delivery of reliable electricity, environmental management, and pollution risk from infrastructure failures and deferred maintenance along distribution networks. Understanding the intersection of Eskom threats, municipal arrears, and pollution reveals why this issue garners widespread public, economic, and environmental concern.
Scale of Municipal Arrears and Eskom’s Financial Warning
Eskom has repeatedly sounded the alarm that unpaid municipal debt is one of its greatest threats, with arrears owed by local governments increasing dramatically. By the end of March 2025, municipal debt stood at an estimated R94.6 billion and continued upward, worsening by August 2025, suggesting that the debt could top R300 billion within the next five years without intervention. This rapid increase reflects longstanding nonpayment issues, rising electricity theft in many areas, and inadequate revenue collection systems at the municipal level. Eskom’s leadership has indicated that such vast arrears undermine the utility’s ability to maintain and invest in critical infrastructure, threatening operational viability if left unchecked.
Municipal Default and Financial Risk
Many municipalities are struggling to meet their obligations to Eskom, even after participating in debt relief programmes designed to help ease the burden. Despite this relief effort, some municipalities remain in default due to weak billing systems, losses from electricity theft, and poor revenue collection. In some cases, Eskom has resorted to legal actions, such as attaching bank accounts or negotiating payment arrangements, to recoup arrears, but these measures are often contentious and complex to implement. The persistent shortfall in payments directly impacts Eskom’s cash flow and ability to manage its distribution network effectively.
Threats to Electricity Supply and Infrastructure
The financial strain from unpaid debts is not Eskom’s only concern. Municipal arrears also diminish the utility’s capacity to maintain distribution infrastructure a factor that could indirectly heighten environmental risks. When maintenance is deferred because resources are prioritised elsewhere, aging transformers, substations, and distribution lines may fail more frequently. Such physical failures can lead to accidental releases of insulating oils, damaged electrical equipment, and increased loadshedding, creating knockon effects that include environmental degradation and pollution of soil and waterways if repair and containment measures are delayed.
Blackouts, Loadshedding, and Pollution Risks
Loadshedding the controlled switching off of electricity to balance supply and demand has become a routine feature in South Africa’s energy landscape due to Eskom’s generation and distribution challenges. These power outages can force industries and households to rely on backup diesel generators, which emit pollutants such as nitrogen oxides, particulate matter, and greenhouse gases. In the absence of stable municipal revenue contributions to fund upgrades and cleaner technologies, the reliance on polluting alternatives can compound environmental challenges, potentially affecting air quality in urban and industrial regions.
Municipal Arrears and Broader Economic Consequences
The impact of municipal arrears extends beyond Eskom’s bottom line, with consequences for economic activity and public services. Municipal distribution networks supply not only residential customers but also businesses, industrial sites, hospitals, and critical infrastructure. When municipalities cannot pay for the electricity they distribute, maintenance is often deferred, affecting service reliability. Interruptions in electricity supply can disrupt manufacturing processes and hamper economic productivity, particularly in sectors where continuous power is essential. This in turn slows economic growth and can contribute indirectly to environmental damage, as struggling firms may find it more costeffective to use older, polluting equipment.
Municipal Debt Relief Programme and Challenges
The South African Government has implemented a municipal debt relief programme aimed at helping local governments manage their arrears by providing writeoffs under specific conditions. However, compliance with the programme’s requirements has been mixed, with many municipalities failing to meet payment conditions or improve billing and credit control systems. As a result, the risk remains that large portions of arrear debt will not be resolved through relief, necessitating stricter financial management strategies, greater accountability in municipal bookkeeping practices, and enhanced cost recovery mechanisms.
Environmental and Public Health Concerns
Environmental pollution concerns linked to Eskom’s municipal arrears problem arise mainly from infrastructure failures and increased use of fossil fuelbased backup systems. Transforming and distribution equipment that is poorly maintained due to lack of funds can corrode, spill insulating oils, or release heavy metals into the surrounding soil and water. In extreme weather events, inadequate infrastructure resilience can exacerbate flooding or environmental damage due to inadequate stormwater management around power stations and substations.
Generator Use and Air Quality
During frequent power outages, households and businesses often turn to diesel generators for power continuity. While such generators provide energy in the short term, they also emit significant air pollutants and greenhouse gases. Prolonged reliance on these polluting alternatives contributes to decreased local air quality, which can affect respiratory health in dense urban centres. Without systemic reform to improve utility finances and infrastructure investment, these pollution risks could continue to rise.
Responses from Government and Energy Sector
Government and energy sector officials have acknowledged the seriousness of the municipal arrears problem and its potential to threaten not only Eskom’s financial health but also the broader energy ecosystem. Plans to restructure Eskom, including breaking up the utility into separate entities responsible for generation, transmission, and distribution, are part of a national effort to modernise the country’s power system and attract private investment. Such reforms aim to improve accountability, reduce dependence on debtladen municipalities, and encourage investment in cleaner, more efficient energy sources.
Measures to Strengthen Revenue Collection
Interim measures introduced to address municipal debt include promoting smart prepaid metering, strengthening credit control systems, and exploring agency agreements where Eskom assists struggling municipalities with billing and collections. These efforts aim to improve municipal revenue streams and ensure that payments for electricity supplied are more reliably collected, thereby helping to stabilise Eskom’s finances. Enhancing revenue collection systems is seen as a critical step in enabling infrastructure maintenance and reducing environmental and pollution risks tied to deferred repairs.
Looking Ahead Sustainability and Reform
The threats posed by municipal arrears to Eskom highlight the interconnection between fiscal sustainability, service delivery, and environmental outcomes. Without effective solutions, unpaid debt owed by municipalities could compromise Eskom’s ability to invest in infrastructure, adapt to cleaner energy technologies, and provide reliable electricity. Longterm solutions will need to balance financial discipline, efficient revenue collection, municipal governance reform, and environmental sustainability to protect both public services and natural ecosystems. Collaborative approaches involving government, municipalities, the private sector, and civil society may be necessary to achieve a resilient, lowpollution energy future for South Africa.