WATCH: Vantage data center energy costs: Who pays the bill in Port Washington? Vantage data center energy costs: Who pays the bill in Port Washington, Wisconsin? During a tour of a Vantage data center in Virginia, Vice President of Site Operations Ryan Kehoe described what the Port Washington facility will require. Conway said the utility's legal obligations and the structure of the data center rate make the arrangement transparent. And on top of that, as part of this data center rate, it shows very clearly, data centers have to pay their full costs," Conway said.