This WAS the update on this issue. As article mentioned the Texas legislature only meets once every other year and they wont be back to it until after next year.
Also the original SB 126 bill against Coal Plants (to which TX has added petcoke) started around Aug 2007 time frame and latest info back from it was in March 29, 2009 where the topic had hearing/public review – that was expected to be uphill in Texas (who knew). Their goal was to kill off 29 New Coal plants ……. The new Anti-Fossil Environmental actions have (so far) across US killed/cancled nearly 59 new coal fired plants – and I think someone has spreadsheet out on the web for who & where they were, just Google Search for them.
A great deal of the petcoke use in Power plants is for a blend of coal & petcoke, relative few operate at 100% petcoke like the Nelson or Wabash power projects.
So when you kill off the new coal application you take future petcoke use along with it in most cases. (Gasification projects are somewhat the exception since the products are often other / more than just steam & power).