In the 12-month period from September 2024 to August 2025, South Carolina's electricity consumption reflects a significant reliance on low-carbon energy sources, with about 60% of its electricity coming from these sources. Nuclear energy is the dominant contributor in this category, providing more than half of the state's electricity. Solar, though still modest in size, accounts for around 4%, including utility-scale projects. Other low-carbon sources such as hydropower and biofuels contribute close to 4% combined. On the other hand, fossil fuels make up about 40% of electricity generation, with gas responsible for almost 22% and coal providing nearly 18%. This mix highlights South Carolina's commendable efforts towards a cleaner energy future, though there's still room for improvement in transitioning further away from fossil fuels.
Data sources used on this page include EIA. More about data sources →
Is Electricity Growing in South Carolina?
Electricity consumption in South Carolina has seen a decrease since its peak in 2005, with the current average at about 18,700 kWh per person, a notable drop of over 5,300 kWh per person. This reduction in electricity usage is mirrored in the consumption patterns of low-carbon electricity, which also decreased by almost 2,000 kWh per person from the previous record high set in 2005. Despite a robust commitment to low-carbon energy sources, the overall downward trend in consumption raises concerns about meeting future electrification needs and the potential to keep reducing reliance on fossil fuels aggressively.
Suggestions
To further bolster low-carbon electricity generation, South Carolina should consider expanding its successful nuclear infrastructure, as nuclear remains a cornerstone of its clean energy supply. Insights can be drawn from other regions with impressive achievements in solar and wind energy. For instance, Nevada has demonstrated an ability to achieve significant solar generation, and France is a leader with its high reliance on nuclear power. Emulating such successes, South Carolina could implement more solar projects and continue to develop its nuclear capacity. The state's geographical and technological strengths present an opportunity to capture a larger share of clean energy, thereby catalyzing a comprehensive shift towards a more sustainable electricity profile.
History
Looking back, South Carolina's nuclear energy landscape has experienced fluctuations, characterized by a series of expansions and contractions over the years. The early 2000s saw an overall rise, despite temporary setbacks in subsequent years. Significant increases in nuclear generation occurred in 2007, 2013, 2016, and 2019, demonstrating periods of intense growth and commitment to low-carbon electricity. These gains have been periodically offset by declines, particularly notable in 2006, 2008, 2012, 2014, 2017, 2018, 2020, and recently, in 2024. Meanwhile, hydropower also contributed positively with increases in 2009, 2013, 2018, and 2020, though it saw some declines as well. Understanding these trends reveals a commitment to clean energy that needs ongoing attention to sustain and expand South Carolina's low-carbon electricity footprint.
