The TV3 television channel on September 9 reported that unknown individuals offered several political parties to buy a database, purportedly with the contact info, including mobile phone numbers, of Latvenergo clients.
The parties - not named in the report - were supposedly asked €80,000 for the database.
Meanwhile Latvenergo representatives are sure that there have been no data leaks.
"Of course we follow data flows in a systematic manner, and we haven't discovered any outside interference with our databases. We think there's no reason to believe that a data breach has taken place," said Latvenergo spokesman Andris Siksnis.
The Data State Inspectorate has meanwhile started a probe over the allegations.