This "potential" is based on geography, not cost or time of delivery. New nuclear costs around £109/MWh, with costs likely to be stable or rising. New solar costs around £41/MWh and costs are declining faster than even optimistic predictions. Time of delivery is key though. >> https://www.heraldscotland.com/news/26237848.scotland-high-potential-new-nuclear-uk-government-study-finds