The standard in Greece is 220V AC (50Hz). Some
North America require a transformer and British ones an adaptor. Most computers
and modern electronic devices do not need a transformer, just a
plug adapter which can be purchased at any electric shop in Athens.
See also Internet and Phones in
The electic company in Greece is called DEH which stands for Den Echo Electriki
(The phone company is OTE which stands for Oute Telefono Echo)
Athens Practical Info Index