If you are using Power BI Report Server then this would suggest that your server is set to UTC time, if you set the timezone settings on the server this should fix your issue.
If you are using powerbi.com then all the servers are always set to UTC time so you need to use a different approach. One simplistic approach is to just add 10 hours, but that does not deal with daylight savings issues.
A friend of mine use a power query like the following to get the localtime in Sydney into his Power BI Reports
let
Source = Json.Document(Web.Contents("http://worldtimeapi.org/api/timezone/Australia/Sydney")),
#"Converted to Table" = Record.ToTable(Source),
#"Transposed Table" = Table.Transpose(#"Converted to Table"),
#"Promoted Headers" = Table.PromoteHeaders(#"Transposed Table", [PromoteAllScalars=true]),
#"Removed Other Columns" = Table.SelectColumns(#"Promoted Headers",{"datetime"}),
#"Changed Type" = Table.TransformColumnTypes(#"Removed Other Columns",{{"datetime", type datetimezone}})
in
#"Changed Type"
