In addition, from 1 April 2023, local authorities will be encouraged to publish on their websites, details about the revenue generated from charging a premium in the previous financial year.
At hynny, o 1 Ebrill 2023, anogir awdurdodau lleol i gyhoeddi ar eu gwefannau fanylion y refeniw sy'n cael ei gynhyrchu drwy godi premiwm yn ystod y flwyddyn ariannol flaenorol.