This study investigates the impact of renewable energy consumption and power supply indicators on economic growth in Nigeria for the period 1990 to 2024. The specific objectives were to investigate the effects of renewable energy consumption, electricity generation, electricity access rate, and energy efficiency on Nigeria's real gross domestic product (RGDP). The study adopted a quantitative research design using time-series data sourced from the World Bank (WDI 2025 edition), the International Energy Agency (IEA), and the Central Bank of Nigeria (CBN) Statistical Bulletin (2024). Descriptive statistics were employed to examine the data characteristics, while the Johansen cointegration test and Error Correction Model (ECM) were used to estimate both the long-run and short-run dynamics among the variables. The results revealed that renewable energy consumption significantly decreased economic growth in Nigeria while electricity generation, electricity access and energy efficiency index exerted positive but statistically insignificant effects on economic growth in the short run. The study concluded that power generation, access and efficiency improvements have long-term potential for enhancing economic growth, but their short run effects are not being felt in the economy significantly. The study recommends that the government should intensify investments in renewable energy infrastructure, improve electricity generation and transmission systems, promote nationwide access to reliable power, and strengthen energy efficiency policies in order to drive economic growth in Nigeria.