In 2025, Illinois is drawing more than three-quarters of its electricity from low-carbon and clean sources, with nuclear power playing a dominant role at nearly half of the total share. Together with wind and solar, low-carbon energy fulfills approximately two-thirds of the state's electricity needs. Around a third of Illinois' electricity still comes from fossil fuels, split almost evenly between gas and coal, which have significant negative impacts on the environment, such as contributing to climate change and air pollution. By leaning into the low-carbon energy transition, Illinois is taking significant steps towards a more sustainable and greener electrical grid, although further efforts are needed to reduce fossil fuel dependency.
Data sources used on this page include EIA. More about data sources →
Is Electricity Growing in Illinois?
Electricity consumption is on the rise in Illinois. The state has seen a notable increase in per capita electricity usage from 2024 to 2025, from approximately 14,700 kWh to around 15,500 kWh per person, marking an increase of more than 800 kWh. This growth trend is paired with a rise in low-carbon electricity generation, which went up by nearly 300 kWh per person during the same period, reflecting Illinois' ongoing enhancement of its green energy portfolio. This upward trajectory suggests a flourishing demand for electricity, likely driven by electrification and technological advancements, with a concurrent push towards expanding clean energy avenues.
Suggestions
To further increase its low-carbon electricity generation, Illinois should consider expanding its existing nuclear and wind capacities. These are already major contributors to the state's energy supply, and enhancing them would amplify the state's clean energy output. Illinois can draw inspiration from regions like France and Slovakia, where nuclear energy contributes a significant portion of the electricity mix, highlighting the potential Illinois has in this field. Furthermore, wind energy successes in regions like Iowa and South Dakota, where wind contributes close to 60% of electricity, serve as impressive models for Illinois to enhance wind power production. Innovations in these neighboring states can offer invaluable insights into scaling up Illinois' wind and nuclear infrastructure effectively.
History
In the recent years leading up to 2025, Illinois has shown commendable growth in low-carbon electricity generation, particularly evident in 2024 when nuclear and wind saw significant boosts of 1.7 TWh and 3.1 TWh respectively. However, 2025 faced challenges with a slight decline in nuclear power generation by 1.5 TWh, though wind generation maintained a steady growth, albeit minimal. It's crucial for Illinois to analyze these fluctuations critically and strive to avert declines in nuclear generation in the future. Building on the progress seen in earlier years, Illinois must continue to focus on enhancing its low-carbon output, advancing sustainable energy goals, and cementing its role as a leader in clean electricity endeavors.
