Vistra's larger retail book gives it a bigger natural hedge and steadier earnings than Constellation Energy's merchant nuclear exposure. Both lack a meaningful regulated rate base, but Vistra is pushing toward 50% retail plus contracted EBITDA, while Constellation still has substantial uncontracted nuclear despite another 920 MW of PPAs. Nuclear is the premium 24/7 product for data centers. Vistra rates a Buy with an A growth grade, tied with Constellation atop large S&P utilities. x.com x.com x.comÂ