Microsoft weighs appeal of Virginia order on data center transmission costs

The Virginia State Corporation Commission has ordered that some transmission costs be directly assigned to data centers rather than spread across the general ratepayer base. Microsoft has until November to formally appeal that order and is preserving its right to do so. Dominion Energy, the utility responsible for implementing compliance, faces an October deadline to propose policy changes that meet the order’s requirements. The specific cost amounts Microsoft or other data center operators would bear under the new allocation were not disclosed in the reporting.

rss · Utility Dive · Sep 18, 14:09

Virginia’s Cost-Allocation Fight Over Data Centers

Virginia, the world’s largest data center market, has historically spread the cost of grid infrastructure built to serve new large loads across the broader ratepayer base served by Dominion Energy. On July 31, the Virginia State Corporation Commission ordered Dominion to directly assign the cost of transmission infrastructure built specifically to serve large loads like data centers, rather than socializing it among all customers, with proponents arguing this could save ordinary ratepayers hundreds of millions of dollars. Dominion was directed to file a compliant tariff proposal within 90 days, setting up the current dispute over how those costs will be structured and whether Microsoft, as a major data center operator in the state, will contest the order before it takes effect.

What changes commercially

If the direct-assignment approach survives appeal, large data center operators in Virginia, one of the world’s densest data center markets, would bear transmission costs that were previously socialized across all ratepayers, raising the marginal cost of running hyperscale facilities there. This shifts leverage toward state regulators and away from utilities and large loads that have benefited from cost-spreading arrangements, and it could push hyperscalers like Microsoft to negotiate direct contracts, seek sites in jurisdictions with more favorable cost allocation, or invest in on-site power to reduce grid dependency. Dominion’s compliance filing in October will determine how the cost assignment is actually structured, and Microsoft’s decision on whether to appeal by November will signal whether major cloud providers see this as an isolated Virginia issue or a precedent worth contesting before it spreads to other states.

References

• Dominion ordered to directly assign some transmission costs to...
• Virginia SCC orders mandatory CIAC for data center transmission
• SCC orders data centers to pay full cost of dedicated grid upgrades...

Tags: #data center power demand, #transmission cost allocation, #utility regulation, #grid interconnection, #Virginia SCC