| Year | Utilities | Xcel Energy |
| 2010 | 7% (goal) | 15% req. |
| 2012 | 12% req. | 18% req. |
| 2016 | 17% req. | 25% req. |
| 2020 | 20% req. | 30% req. |
| 2025 | 25% req. | 30% req. |
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