You can get a lot more renewable energy for the money. Colorado tax payers are going to get fleeced by this.
The other issue not mentioned is speed. It takes so long to build nuclear that it can't be part of any realistic plan to address climate change, and it also makes it very prone to corruption because nothing gets delivered for decades.
These are all issues directly related to regulation and unnecessary red tape created out of NIMBYism and irrational fear around radiation. India, Canada, and China aren't stupid. They're building and/or modernizing nuclear power plants like crazy because they're so effective at reliable baseline power, which renewables simply are not. In the US, we force years - sometimes decades - of reviews and permits and defending court cases and other bullshit unrelated to the construction and operation of clean, safe nuclear power.
The other issue going to cost is that the US - again, stupidly - bars reuse of high energy spent fuel. If you simply separate the low energy (relatively safe, but useless for generating power) waste from the high energy fuel remaining and feed the high energy stuff back in, you can extract nearly all the energy, save a ton of fuel costs, mine less fuel, and have vastly less volume of waste and vastly less energetic waste.
Let's assume some sort of absolute mandate were passed to build 5 CANDU-6 (known, proven, safe, reliable design) reactors. No reviews, no permits, no red tape, no lawsuits. Just build the damn things now. You can get one operational in ~3.5 years, all of them in about 4ish years. South Korea and China have built PWRs in 5. Assuming we also lifted the ban on fuel reprocessing, CANDU-6 plants will produce power at a cost of 5-6 cents per kWh, yielding a retail price of 13-17 cents per kWh. US average is about 16.2 cents, California has rates pushing 50 cents. But we're too stupid to get out of our own way and just do it, so we'll keep strangling the poor and middle class economically.