Empresas Públicas de Medellín E.S.P. Group: Struggling with liquidity issues January 10, 2019 | TSO Focus Empresas Públicas de Medellín E.S.P. (EPM) Group is a Colombia-based multi-utility group with business interests in power generation, transmission and distribution (T&D).... This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password