"The Texas Senate passed a bill Thursday that leading business interests fear would lead to an age of expensive power and rolling blackouts.
If passed by the House, state S.B. 715 would require all renewable projects — even existing ones — to buy backup power, largely from coal or gas plants.
This would require solar plants in particular to buy backup power to “match their output at night — a time when no one expects them to produce energy and when demand is typically at its lowest anyway,” consultant and energy expert Doug Lewin wrote in an April analysis"
As unpopular as your comment may be, it is likely correct.
Right now solar is so cheap during the day that they can bid a negative price on the market during the day making sure they are part of the mix. Here is a great article/video on it from Practical Engineer
Obviously solar doesn’t actually cost negative money to run, so this will require them to bid a more realistic price that will, in the long run, facilitate an actual conversion to green energy.