I don't see an explicit mention of solar. The only bit that mentions renewables says;

"Other options, including renewable projects, were considered but not advanced due to a range of
factors such as expected time to construct, feasibility of generating power reliably on the required scale, and effects on electricity market incentives."

Would be nice to see some details of these comparisons, and exactly what they mean by "effects on electricity market incentives". That sounds like a great place to hide a bunch of shady reasoning ...