** Shares of utility Talen Energy TLN.O rise 11.7% to $418.6 premarket
** Power producer says it will buy about 2.6 gigawatts of natural gas-fired generation capacity from private equity firm Energy Capital Partners for $3.45 billion
** Says deal comprises about $2.55 billion in cash and roughly $900 million in stock
** 17 of 18 analysts rate TLN "strong buy" or "buy" and 1 "hold"; median PT is $444.61 - data compiled by LSEG
** Stock gained ~86% in 2025
(Reporting by Yagnoseni Das in Bengaluru)
((Yagnoseni.Das@thomsonreuters.com;))