ingston Ash Pond Release:Public Health Q amp APhoto Justin FeeTVA President and CEO Tom Kilgore answers questions during a news conference at TVA headquarters in December .KNOXVILLE, Tenn. The Tennessee Valley Authority has reopened a bond issue to take advantage of a rate that its interim financial chief says has rarely been this low in the last two decades.TVA's John Hoskins said in a statement Thursday that reopening the $. billion, . percent, year global power bonds provides a great opportunity to lock in lower interest c