Microsoft's appeal window is really a fight over how data centers pay

Microsoft has until late November to formally challenge Virginia's direct assignment of transmission costs to data centers, and the window matters less for the appeal itself than for the question it preserves: whether a connection charge lives on a tariff schedule or in a bilateral agreement.

The State Corporation Commission's case concerned Dominion's proposed change to Rider T-1, the line-item charge that recovers transmission investment, and the commission ruled in favor of a mandatory CIAC for direct-connect facilities, applying it to the substations and transmission lines that tie those facilities to the grid. Dominion's amended policy is due in a follow-on docket in October, and because Virginia law gives an appellant four months from the final order to file the petition itself, Microsoft's deadline lands in late November.

Microsoft's objection in the record is procedural. Cliona Robb, arguing for the company at the hearing, said affected customers did not have enough of a say, framing the issue as "who's in the courtroom when this direct assignment decision is being made."

Will Reisinger, a partner at Reisinger Gooch who represented The Piedmont Environmental Council in the hearing, told Utility Dive it would be "somewhat odd" or "unusual" for somebody to file a notice of appeal without actually intending to appeal. He rejected the notice complaint on its facts, saying it is difficult to imagine how the commission could have given more notice to the public, data centers included, given the orders in which it signaled it would consider cost allocations in this case—an issue he says has gone unresolved in Virginia for a long time.

Michael Barber, PEC's senior energy infrastructure policy analyst, said he does not think Microsoft's argument "holds water," because a developer interested in the issue knew about the proceeding and had the opportunity to participate. He added that he does not know whether notice will be among the grounds for appeal, which leaves the reported record holding a complaint without a stated theory behind it.

The docket contains a cleaner split than the notice fight. Google, which participated in the case alongside Amazon and Meta, argued during the hearings for voluntary CIACs instead of mandatory ones, and Hannah Coman, a strategic negotiator on Google's energy market development team, called the commission's order "thoughtful." The company has said it advocated for direct interconnection costs to be payable by the data centers, though a spokesperson said Google cannot comment on Microsoft's appeal "at this stage."

Google's stated position covers the same dollars a mandatory contribution would capture—the wires and substations that reach a campus—while leaving the payment a matter of election, and that distinction decides who holds the pen on the largest variable in a Virginia campus's development budget. A mandatory charge becomes a schedule that every later direct-connect project in the territory inherits; a voluntary one stays inside a bilateral agreement, priced project by project. A voluntary contribution is a tool a developer can use to buy speed where speed matters, while a mandatory one is a price on connecting at all, owed on the same terms regardless of what else the customer negotiates.

The underwriting difference is easy to describe and, on the record here, impossible to size: a tariff-based contribution behaves like the energy rate in a pro forma, sitting in the operating model and identical for every competitor building in the same territory, while a negotiated contribution is a project-specific close cost that folds into a build budget and can be traded against schedule. Which path costs a given campus less is not in the record, but what the record establishes is which instrument sets the number—and only one of them leaves room to argue.

Microsoft's recorded objection stops at process while the economics turn on mechanism, and the distinction is concrete: an allocation that lives in Rider T-1 applies to the class Dominion serves, while one that lives in an interconnection agreement applies to a single project. Reopening the assignment question keeps the second possibility alive, which reads as the commercial predicate for a procedural appeal, though the coverage does not describe the grounds Microsoft would argue.

As this publication has argued, grid access is becoming a customer class rather than a queue position, and Virginia is where that idea acquired a line item. Rider T-1 already recovered transmission investment; a mandatory contribution for direct-connect facilities turns the way a customer takes service into a classification that carries its own price, and a tariff classification is portable to other jurisdictions in a way a negotiated payment is not. That portability, more than the size of any one campus's bill, is what an appeal is positioned to contest.

That portability also cuts into the queue-value thesis, because if the cost of connecting is administered by a commission rather than agreed between a utility and a developer, the arbitrage available to an operator who secures interconnection early narrows to whatever the schedule leaves unpriced, and the connection stops trading as a private right. Virginia's order suggests the mark on that asset is now set in a hearing room as much as in a negotiation—a meaningful qualification of the thesis rather than a refutation of it.

Dominion's amended policy arrives in October, ahead of any November petition, which means the next round of Virginia numbers will be set while the appeal question is still open. A direct-assignment mechanism in another state's rate case, or a Dominion October filing that adopts Google's voluntary construction as a compromise, would close the question the appeal is meant to hold open.