U.S.- and Latin America-focused private equity fund manager ACON Investments has sold Panama-based Hidrotenencias to EnfraGen Spain, an energy-focused platform backed by U.S.-based investment firm Glenfarne Group. ACON originally invested in Hidrotenencias, which operates three run-of-the-river hydropower plants in Panama, in 2012 through ACON Latin America Opportunities Fund. Financial details of the transaction were not disclosed.