Considering the cost of car ownership and depreciation and the ideal solar climate of Colorado, solar panels are likely to provide greater financial benefits. A small EV can lose about $7,500 a year in value, whereas the solar unit should last for 25 years or more, only losing a small amount of power each year.
Sources:
https://www.sierraclub.org/sierra/ask-mr-green/limited-funds-it-better-buy-solar-or-ev
https://www.nrel.gov/gis/assets/images/solar-annual-ghi-2018-usa-scale-01.jpg