Energijos Skirstymo Operatorius AB (ESO) is an electricity and gas distribution company in Lithuania.

It was established on 1 January 2016 through merger of the Lithuanian electricity distribution network operator LESTO AB and a gas company Lietuvos dujos.

[1] ESO is controlled by a state-owned group of energy companies Ignitis Group which owns 94.98% of shares.

Its shares are traded on NASDAQ OMX Vilnius.

ESO is a member of National Lithuanian Electricity Association.