Electricity tariffs play a pivotal role in shaping economies and societies, acting as a driving force behind sustainable growth and development. These tariffs, the prices consumers pay for electricity, are subject to periodic reviews to ensure they remain aligned with dynamic economic and social conditions. These reviews are essential not only for safeguarding the interests of both investors and consumers but also for maintaining the vitality of the electricity sector.

During these reviews, the regulator accounts for changes in key metrics or assumptions and costs to ensure that tariffs accurately reflect the cost of providing power. The assumptions applied during these tariff reviews are crucial in determining the final electricity rates that consumers pay. Consider a scenario where a country's electricity tariffs fail to keep pace with economic changes. Industries will face financial strain, unable to cover their operational costs, while consumers will grapple with unpredictable electricity bills.

This article delves into the intricate world of tariff reviews within the Nigerian Electricity Supply Industry (NESI), shedding light on the process of adjusting assumptions that underpin these crucial pricing mechanisms. By understanding the mechanics of these reviews and the implications of their outcomes, stakeholders can grasp how these adjustments contribute to the long-term stability and growth of the electricity market. In the following sections, we will explore the multifaceted aspects of tariff reviews, ranging from key assumptions to the procedural intricacies that shape the landscape of electricity pricing in Nigeria.