Estonia’s TSO Elering completes EUR16.3 million substation June 14, 2017 | Europe News Estonia’s transmission system operator (TSO) Elering has completed its EUR16.3 million Viru hub substation in Auvere, Ida-Viru County, integrating Estonia's energy system into a single network. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password