** Shares of solar firm Altus Power AMPS.N up 11% to ~$4
** Buyout firm TPG's TPG.O climate investment arm is in talks to acquire AMPS, people familiar with the matter told Reuters
** Shares of TPG down 1.8%
** Up to last close, AMPS down 48% YTD
(Reporting by Anshuman Tripathy)
((Anshuman.Tripathy@thomsonreuters.com))