Questão jurídica principal
Whether the proposed tariff surcharge for related rights had to be included in GT S.
Decisão extraída
The tariff as approved was not shown to be unlawful or inappropriate; the surcharge was not required.
Fundamentação extraída
Art. 60 URG leaves room for legislative concretization; the statutory 10:3 relation and ceiling are binding, and the evidence did not show that the approved tariff yielded an inappropriate remuneration.