National Energy Regulator South Africa Publishes Municipal Electricity Tariff Reasons

The National Energy Regulator of South Africa (NERSA) has published its Reasons for Decision (RfD) regarding municipal electricity tariffs for the 2026/27 financial year. This annual publication is a critical regulatory event, providing the detailed rationale behind NERSA's approved tariff adjustments for licensed municipal distributors. The release of these reasons is particularly significant in light of recent High Court judgments that have underscored the imperative for enhanced transparency, procedural fairness, and meaningful public participation in NERSA's tariff approval processes. Legal professionals advising municipalities and affected stakeholders must meticulously review these reasons to ensure compliance and to understand the implications for municipal budgeting, financial sustainability, and consumer affordability.

The National Energy Regulator of South Africa (NERSA) recently issued its Reasons for Decision (RfD) concerning municipal electricity tariffs for the 2026/27 financial year, a development of paramount importance for local government, businesses, and residential consumers across the country. This annual regulatory pronouncement sets the framework within which municipalities may charge for electricity, directly influencing their revenue streams, operational viability, and the cost of living for millions of South Africans. The publication of these detailed reasons follows NERSA's earlier approval of 176 tariff applications from licensed municipal and private electricity distributors, which came into effect on 1 July 2026.

This year's tariff determinations and the accompanying reasons are particularly noteworthy given the heightened scrutiny on NERSA's administrative processes. Recent judicial interventions have compelled the regulator to reinforce its commitment to transparency and public participation, ensuring that its decisions are not only lawful and reasonable but also procedurally fair. For practising attorneys, understanding the legal underpinnings and practical implications of these reasons is crucial for advising clients on compliance, potential challenges, and strategic responses to the evolving energy regulatory landscape.

This article will delve into the statutory and doctrinal context governing municipal electricity tariffs, analyse the key aspects of NERSA's reasons for decision, including the impact of recent court orders, and conclude with practical implications for legal practitioners navigating this complex regulatory environment.

NERSA, established as a juristic person under Section 3 of the National Energy Regulator Act, 2004 (Act No. 40 of 2004), is mandated to regulate the electricity, piped-gas, and petroleum pipelines industries. Its authority to regulate electricity prices and tariffs is primarily derived from the Electricity Regulation Act, 2006 (Act No. 4 of 2006). A core function of NERSA is the annual assessment and approval of tariff applications submitted by electricity licensees, including municipalities.

In terms of Section 15(2) of the Electricity Regulation Act, 2006, a licensee, such as a municipality, may not charge a customer any tariff other than those determined or approved by NERSA as part of its licensing conditions. This statutory requirement underscores NERSA's pivotal role in ensuring a uniform and regulated approach to electricity pricing across the country. Municipalities, in turn, must incorporate these approved tariffs into their annual budgets, which are governed by the Local Government: Municipal Finance Management Act, 2003 (Act No. 56 of 2003) (MFMA). The MFMA requires municipalities to set out realistically anticipated revenue from each source, making NERSA's tariff approvals a fundamental component of their financial planning and sustainability.

The process of tariff approval is an administrative action, subject to the principles of administrative justice enshrined in Section 33 of the Constitution of the Republic of South Africa, 1996, and given effect by the Promotion of Administrative Justice Act, 2000 (Act No. 3 of 2000) (PAJA). This legal framework demands that NERSA's decisions be lawful, reasonable, and procedurally fair, including the provision of adequate written reasons for any administrative action that materially and adversely affects rights or legitimate expectations.

The publication of NERSA's Reasons for Decision for the 2026/27 municipal electricity tariffs is a direct consequence of its statutory mandate and recent judicial pronouncements. The High Court, in the seminal case of *AfriForum NPC v National Energy Regulator of South Africa and Others* (Case No. 2025/137620), delivered a significant judgment on 4 December 2025, which found NERSA's public participation process for the 2025/26 municipal tariff approvals to be unlawful due to non-compliance with Section 4 of PAJA. This ruling highlighted critical deficiencies, particularly the lack of proper cost-of-supply studies and inadequate opportunities for public comment.

In response to the *AfriForum* judgment, the High Court imposed strict timelines for NERSA's future tariff approval processes. These orders, issued on 20 February and 26 May 2026, stipulated that municipal distributors' tariff applications had to be submitted by 31 March, and NERSA's final decisions and reasons had to be finalised and approved by 11 May for municipal distributors and 30 May for private distributors. NERSA successfully processed 162 of the 176 applications within the prescribed timeframe, but had to seek a court extension for the remaining 14 applications to avoid breaching the court order and compromising the validity of the approved tariffs. This demonstrates the direct and ongoing impact of judicial oversight on NERSA's regulatory practices, reinforcing the principles of accountability and transparency.

NERSA's tariff methodology is designed to enable efficient licensees to recover the full cost of their licensed activities, including a reasonable return or margin, while balancing the interests of customers, licensees, and investors. The reasons for decision typically detail the guideline increase, tariff benchmarks, and the assessment of individual municipal applications, often requiring cost-of-supply studies for new tariff structures. Furthermore, NERSA is increasingly focusing on municipal network performance, proposing a national framework with key performance indicators such as System Average Interruption Duration Index (SAIDI), System Average Interruption Frequency Index (SAIFI), distribution losses, and compliance with bulk payment obligations to Eskom. These performance metrics, if implemented, could lead to tariff adjustments as rewards or penalties, further linking tariffs to service quality.

The implications for municipalities are profound. They must meticulously align their proposed tariffs with NERSA's approved rates and the underlying reasons. Failure to do so not only risks NERSA's disapproval but also exposes them to legal challenges under PAJA. The reasons provide municipalities with a clear understanding of NERSA's expectations regarding cost recovery, efficiency improvements, and service delivery standards. For instance, municipalities are encouraged to improve revenue collection and reduce energy losses, as well as to spend sufficiently on network maintenance to ensure sustainable service delivery. The publication of these reasons also empowers consumers and civil society organisations to scrutinise municipal tariff proposals and hold both NERSA and municipalities accountable for fair and justifiable electricity prices.

The publication of NERSA's Reasons for Decision for the 2026/27 municipal electricity tariffs marks a critical juncture in South Africa's energy regulatory landscape, reflecting a concerted effort to enhance administrative justice and transparency. For legal practitioners, this development necessitates a thorough understanding of the interplay between the Electricity Regulation Act, 2006, the National Energy Regulator Act, 2004, the Municipal Finance Management Act, 2003, and the Promotion of Administrative Justice Act, 2000, particularly in light of the binding judicial directives from the *AfriForum* case. Attorneys advising municipalities must ensure that their clients' tariff applications and subsequent implementation strictly adhere to NERSA's approved rates and the detailed reasons provided, paying close attention to the methodologies for cost recovery, efficiency, and public participation.

Looking ahead, practitioners should anticipate continued judicial oversight and a sustained emphasis on transparent and procedurally fair administrative processes. The potential for litigation remains high if NERSA or municipalities deviate from these established principles or fail to provide adequate justification for tariff adjustments. Furthermore, the increasing focus on municipal network performance indicators suggests that future tariff approvals may be more directly linked to service delivery outcomes. Proactive engagement with the regulatory process, robust internal governance within municipalities, and meticulous adherence to the legal framework will be paramount for mitigating risks and ensuring the lawful and sustainable provision of electricity services in South Africa.