The chief driver of costs has been re-evaluations of site-specific cost estimates, primarily in the investor-owned piece of the dataset. The median plan return among the investor-owed funds in 2015 was -2.4%, compared to the 1.4% return of the S&P 500 index and the -4.8% decline of the S&P 500 Utilities index. Overall contributions of $362 million were down $7 million in 2015 despite a $1.6 million increase from the public utilities.
Are you ready for that great atomic power?
Data collected by P&I lists Exelon Corp., Duke Energy, and Entergy Corp. as the top investor-owned funds with assets of $10.5 billion, $5.5 billion and $5.4 billion, respectively.