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Energy Profile

Delaware

vs

Illinois

Side-by-side comparison of electricity costs, generation mix, and renewable energy data.

DelawareMetricIllinois
17.13¢/kWhResidential17.69¢/kWh
12.64¢/kWhCommercial13.07¢/kWh
9.64¢/kWhIndustrial10.14¢/kWh
#34Price Rank#35
4.4%Renewable %15.3%

Generation Mix

Delaware

Coal
3.0%
Gas
87.6%
Wind
0.1%
Solar
3.5%

Illinois

Coal
14.6%
Gas
16.3%
Nuclear
53.6%
Wind
13.5%
Solar
1.7%

Frequently Asked Questions

Delaware has cheaper residential electricity at 17.13¢/kWh. The difference is 0.56¢/kWh between the two states. Delaware ranks #34 and Illinois ranks #35 cheapest among all states.

Delaware gets 4.4% of electricity from renewables, while Illinois gets 15.3%. Illinois leads in renewable energy adoption.

Electricity rates from EIA retail sales data. Generation mix from EIA electric power operational data.

Source: U.S. Energy Information Administration, 2026.

Comparing entity A and entity B on U.S. state-level electricity rates and generation mix requires lining up the underlying the EIA Open Data API and State Electricity Profiles data side by side. The table above runs the comparison on the canonical fields; the narrative below identifies the factor or factors that drive the most meaningful difference between the two.

For households or analysts using this comparison as a decision input, the right framing is usually not "which is better" in aggregate but "which is better for the specific decision in front of you." the EIA Open Data API and State Electricity Profiles captures the raw data; the framing depends on whether the question is investment, residency, planning, or research.