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Prices here are state averages across all utilities and rate plans, from the U.S. Energy Information Administration — not the rate on any one bill. Generation-mix figures are reported annually, not real time.

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Hydro Power in Illinois

Net generation and share of the state power mix, 2025 — U.S. Energy Information Administration.

Hydro generation (2025)
89 thousand MWh
Share of state power mix
0.05%
National rank (hydro output)
#44
U.S. average share
5.58%

Hydro share of Illinois's power mix over time

2001: 0.08%2025: 0.05%

Year by year

YearHydro (thousand MWh)Share of state mix
2025890.05%
2024750.04%
2023920.05%
20221150.06%
20211290.07%
20201350.08%
20191240.07%
20181470.08%
20171250.07%
20161330.07%
20151240.06%
20141320.07%
20131200.06%
20121110.06%
20111400.07%
20101190.06%
20091360.07%
20081390.07%
20071540.08%
20061730.09%
20051290.07%
20041540.08%
20031390.07%
20021290.07%
20011440.08%

Source: U.S. Energy Information Administration, electric power operational data (net generation by state and energy source). "Share of state mix" is this fuel's net generation as a percentage of all in-state net generation.

Hydro Power in Illinois | EnergyAtlasUSA