Delaware vs Illinois electricity prices: 17.15 ¢ against 17.67 ¢ per kWh
45 places apart: Delaware #51, Illinois #6 of 51, the widest of 31 measures. petroleum share of generation Delaware 1.3%, Illinois 0.0%; gas share of generation Delaware 86.0%, Illinois 16.0%. Typical bills differ by $31 a month, higher in Delaware.
Over a year the typical energy bill differs by $375 ($158 a month in Delaware, $127 in Illinois). Since 2015 the home price rose +27.8% in Delaware and +41.4% in Illinois: 13.6 points more in Illinois. Against the U.S. home average Delaware sits at -0.5% and Illinois at +2.6%.
Where the power in Delaware and Illinois comes from
Fuels with the widest gaps, Delaware against Illinois.
| Fuel | Delaware | Illinois | Gap |
|---|---|---|---|
| Gas | 86.0% | 16.0% | 70.0 points, higher in Delaware |
| Nuclear | 0.0% | 50.9% | 50.9 points, higher in Illinois |
| Wind | 0.1% | 13.1% | 13.0 points, higher in Illinois |
| Coal | 4.6% | 16.1% | 11.5 points, higher in Illinois |
Delaware against Illinois: widest gaps
| Measure | Delaware | Illinois | Gap | Rank (of 51) |
|---|---|---|---|---|
| Clean share with nuclear | 4.2% | 67.7% | -63.4 points | #51 / #6 |
| Petroleum share of generation | 1.3% | 0.0% | +1.3 points | #6 / #44 |
| Gas share of generation | 86.0% | 16.0% | +70.0 points | #2 / #39 |
| Price change 2024 to 2025 | +3.5% | +11.3% | -7.8 points | #34 / #4 |
| Nuclear share of generation | 0.0% | 50.9% | -50.9 points | #32 / #3 |
| Wind share of generation | 0.1% | 13.1% | -13.0 points | #40 / #17 |
| Price change since 2015 | +28% | +41% | -13.6 points | #34 / #12 |
| Typical monthly bill, energy only | $158 | $127 | +$31 | #15 / #37 |
| Heat pump saving on gas | -3% | -51% | +47.8 points | #19 / #41 |
| Heat pump break-even COP | 3.10 | 4.53 | -1.43 | #27 / #5 |
31 measures compared for Delaware and Illinois; the CSV holds the 10 widest.
CSVDelaware and Illinois on the map
Delaware and Illinois: price over time
Home price, Delaware and Illinois, 2010 to 2025: 16 rows
| Year | Delaware | Illinois | Gap to U.S. |
|---|---|---|---|
| 2010 | 13.80 | 11.52 | +2.26 |
| 2011 | 13.70 | 11.78 | +1.98 |
| 2012 | 13.58 | 11.37 | +1.70 |
| 2013 | 12.95 | 10.63 | +0.82 |
| 2014 | 13.29 | 11.91 | +0.77 |
| 2015 | 13.42 | 12.50 | +0.77 |
| 2016 | 13.42 | 12.54 | +0.87 |
| 2017 | 13.35 | 12.95 | +0.46 |
| 2018 | 12.53 | 12.77 | -0.34 |
| 2019 | 12.55 | 13.03 | -0.46 |
| 2020 | 12.56 | 13.04 | -0.59 |
| 2021 | 12.52 | 13.18 | -1.14 |
| 2022 | 13.71 | 15.65 | -1.33 |
| 2023 | 15.73 | 15.71 | -0.27 |
| 2024 | 16.57 | 15.87 | +0.09 |
| 2025 | 17.15 | 17.67 | -0.08 |
Delaware 13.80 to 17.15 ¢ and Illinois 11.52 to 17.67 ¢ between 2010 and 2025 (EIA).
CSVYour bill in Delaware and in Illinois
Where Delaware and Illinois are alike
- Business price 2025, ¢/kWh: 12.68 and 13.10
- Home solar per 1,000 accounts: 29.9 and 25.2
- Solar value of 1 kW: $237 and $231
- Home price 2025, ¢/kWh: 17.15 and 17.67
- Industry price 2025, ¢/kWh: 9.62 and 9.63
Sources and dates: data sources.
Questions
Is Delaware or Illinois higher on clean share with nuclear?
Illinois, by 63.4 points; they rank #51 and #6 of 51.
Is Delaware or Illinois higher on petroleum share of generation?
Delaware, by 1.3 points; they rank #6 and #44 of 51.
Is Delaware or Illinois higher on gas share of generation?
Delaware, by 70.0 points; they rank #2 and #39 of 51.
Is Delaware or Illinois higher on price change 2024 to 2025?
Illinois, by 7.8 points; they rank #34 and #4 of 51.
Is Delaware or Illinois higher on nuclear share of generation?
Illinois, by 50.9 points; they rank #32 and #3 of 51.
What would 874 kWh a month cost in Delaware and in Illinois?
Delaware $150, Illinois $154: $5 apart, energy only.
Where do Delaware and Illinois match most closely?
business price 2025, ¢/kWh (12.68 and 13.10); home solar per 1,000 accounts (29.9 and 25.2); solar value of 1 kw ($237 and $231).