** Shares of electric utility Constellation Energy CEG.O
rise 6.5% to $221.98 premarket
** Co signs 20-year power supply deal with Microsoft
MSFT.O , under which the tech giant will purchase energy from
CEG's nuclear plant to power its data centers
** Deal will help pave the way to restart one of the units
at CEG's Three Mile Island nuclear power plant that was shut
down in 2019 due to operational issues
** CEG says in addition to relevant approvals to restart the
plant, it will seek to extend plant operations to at least 2054
** If the restart is approved, Three Mile Island would
provide MSFT with 835 megawatts of energy
** A separate unit of Three Mile Island plant was shut in
1979, after experiencing a partial meltdown in one of the
biggest commercial nuclear accidents in U.S. history
** MSFT shares marginally down at $437.48 premarket
** As of last close, CEG shares are up as much as 78% YTD
(Reporting by Vallari Srivastava in Bengaluru)
((Srivastava.Vallari@thomsonreuters.com;))