Over the past 12 months, from July 2025 to June 2026, South Carolina's electricity consumption has seen a mix of sources, with a significant portion coming from low-carbon options. More than half of the electricity, approximately 60%, is generated from low-carbon sources. In particular, nuclear energy plays a dominant role, contributing over 52% to the state's electricity mix. Solar energy, although still emerging, accounts for around 4% of the total electricity, bolstered slightly by utility-scale installations. On the other hand, fossil fuels make up about 40%, divided between gas at nearly 23% and coal at more than 17%. Hydropower and biofuels contribute smaller shares, collectively making up just over 3% of the energy landscape. This data highlights South Carolina's reliance on nuclear power as the primary low-carbon electricity source, with fossil fuels still maintaining a significant presence.

Is Electricity Growing in South Carolina?

In examining whether electricity usage is growing in South Carolina, the data suggests a slight decline. The latest consumption rate is 18,526 kWh per person, a reduction of 386 kWh compared to the previous high in 2025. Similarly, low-carbon electricity generation stands at 11,058 kWh per person, down by 535 kWh from the historic peak, which happened in 2023. These decreases are concerning since the demand for electricity is expected to rise amid economic growth and the shift toward clean energy solutions. Meeting future demands alongside sustainability goals requires reversing these declines and substantially boosting low-carbon electricity production.

Suggestions

To bolster low-carbon electricity generation, South Carolina should consider expanding its nuclear capabilities, the current backbone of its clean energy portfolio. Drawing inspiration from globally recognized leaders in low-carbon energy can guide these efforts. France, for instance, generates 67% of its electricity from nuclear power, illustrating the potential of ramping up nuclear facilities. Additionally, learning from states such as Nevada or regions like California and Lebanon, where solar contributes significantly to the electricity grid, South Carolina can also enhance its solar capacity. Embracing these approaches can ensure South Carolina leads the way in sustainable electricity generation, tackling the challenges of climate change and air pollution by reducing fossil fuel reliance.

History

The historical development of low-carbon electricity in South Carolina shows fluctuating trends. Notably, in recent years, there were both expansions and setbacks in nuclear and other clean energy sources. In 2024, a dip occurred with nuclear generation reducing by 1.9 TWh, but this was temporarily offset in 2025 with a notable increase of 2.9 TWh. However, 2026 saw another decline in nuclear output by 2.9 TWh. Meanwhile, hydropower and biofuels have experienced slight increases and downturns over these years. Although these variations reflect the dynamic nature of electricity generation, the setbacks in nuclear output are particularly concerning, emphasizing the urgent need for robust strategies to ensure sustained growth in low-carbon electricity. An unwavering commitment to expanding nuclear and integrating solar technologies further can drive consistent and sustainable advancements in the state's energy landscape.

Electricity Imports and Exports

Balance of Trade

* 12M = Last 12 months (Jul 2025 – Jun 2026) — a rolling 12-month period, not a calendar year.