Questione giuridica chiave
Whether the appeal could challenge the Department's decision approving the 2018 tariff schedule.
Decisione estratta
The decision was in principle appealable, but the appellant lacked a protectable interest for the requested relief because its tariff request had been fully granted.
Motivazione estratta
The Department had approved the tariff schedule within the government-set maximum rates, leaving no room to exceed them. Since the appellant obtained what it had asked for, it had no legal interest in further review.