It's honestly very hard to say precisely. All parties are incentivized to blame someone else, but these kinds of regulations tend to change very slowly and usua

It's honestly very hard to say precisely. All parties are incentivized to blame someone else, but these kinds of regulations tend to change very slowly and usually grandfather in projects that are completed or are in process. Looking at the recent Summer plant in SC, for example, it looks like it was mostly poor planning and unforeseen changes in energy prices and building costs. These factors change much more quickly than regulations.