From September 2024 to August 2025, Illinois has increasingly relied on low-carbon electricity sources, chalking up a commendable 68% of its total electricity generation being derived from these clean energy options. The state's nuclear power plants supply a substantial portion of this low-carbon electricity, accounting for more than half of the total generation at around 52%. Wind and solar make up the remainder of the low-carbon portfolio, contributing approximately 13% and 3% respectively. On the other hand, fossil fuels still have a significant presence, making up about one-third of the state's electricity mix. Natural gas and coal are almost evenly split within the fossil category, with gas slightly edging out coal, accounting for roughly 17% and 15% respectively.
Data sources used on this page include EIA. More about data sources →
Is Electricity Growing in Illinois?
Electricity consumption in Illinois has shown a mixed pattern. As of 2025, the average consumption is approximately 15,124 kWh per person, which is about 649 kWh less than the peak recorded in 2007. Despite the drop in total electricity use, there is a positive trend in low-carbon energy adoption. The per capita low-carbon electricity generation recently reached 10,290 kWh, compared to 10,030 kWh in 2024, a modest but promising increase of 260 kWh. This uptick indicates a significant shift toward cleaner energy, suggesting that while overall electricity consumption may not be growing, the state is nevertheless transitioning towards a more sustainable and environmentally friendly energy profile.
Suggestions
Illinois can increase its low-carbon electricity generation by expanding both its nuclear and wind facilities. Looking at successful regions, Illinois can draw inspiration from states such as Iowa and South Dakota, where wind contributes to a whopping 60% and 57% of electricity generation respectively. By following these models, Illinois can further enhance its wind capacity. Additionally, France and Slovakia are exemplary countries when it comes to nuclear electricity generation, sitting at 69% and 67% respectively. Adopting similar strategies could help Illinois significantly scale up its nuclear capacity. Expanding solar generation should also be a focus, taking cues from states like Nevada and countries like Lebanon, which have achieved solar contributions of around 30% and 31%.
History
Over the past few decades, Illinois has witnessed substantial growth in its low-carbon electricity generation, particularly from wind and nuclear sources. In the late 2000s, both wind and nuclear power saw significant increases, with notable expansions in wind from 2008 to 2013. The 2010s brought further diversification with continued wind expansion and bumps in nuclear generation, although there were some concerning setbacks in nuclear output during 2017 and 2021. Despite these challenges, recent years have demonstrated renewed efforts, with nuclear rebounding in 2022 and 2024. The year 2025 marks a promising development with a significant increase in solar power, adding another layer of green electricity to Illinois' energy mix.
