Electricity distribution companies in Nigeria continue to face financial sustainability challenges despite sector reforms, creating the need to understand how firm-specific characteristics and operating conditions influence performance. This study examined the effect of firm attributes on the financial performance of electricity distribution companies in Nigeria, with customer density evaluated as a moderating factor. Specifically, the study assessed the influence of firm size, leverage, liquidity, asset structure, firm growth, and working capital ratio on financial performance. A quantitative research design was adopted using panel data obtained from electricity distribution companies in Nigeria. The study employed panel regression techniques, with Return on Assets (ROA) used as the primary measure of financial performance, while moderation analysis was applied to determine the influence of customer density on the relationship between firm attributes and performance. The findings revealed that firm size has a significant positive effect on financial performance, suggesting that larger firms benefit from economies of scale, improved access to financial resources, and enhanced operational capabilities. Customer density was also found to significantly moderate the relationship between firm size and performance, indicating that firms operating in areas with higher customer concentration are better positioned to maximize resource advantages and improve profitability. The findings support the Resource-Based View and Contingency Theory by demonstrating that firm resources and environmental conditions jointly shape performance outcomes. The study recommends that electricity distribution companies pursue sustainable expansion strategies, strengthen financial and operational resource management, and consider customer density patterns when making investment and growth decisions to improve long-term financial performance.

Keywords: Firm size, financial performance, Customer density, Electricity distribution companies, Nigeria.