Digital Realty paid $3.5 billion in mixed consideration to acquire Blackstone's 64 percent equity interest in three Northern Virginia data centers, deploying $1.2 billion in cash and $2.3 billion in equity. The transaction converts joint venture assets into wholly owned infrastructure at a moment when Northern Virginia inventory constraints are forcing hyperscalers into sale-leaseback arrangements and forward capacity commitments.
The three facilities sit in Ashburn and surrounding Loudoun County submarkets, which account for roughly 25 percent of U.S. colocation capacity and remain the primary interconnection nexus for AWS, Microsoft, and Google cloud regions. Digital Realty already held the minority stake in the venture. Blackstone exits at a blended multiple that implies mid-teens annualized returns on its original equity, deployed between 2019 and 2021 when Northern Virginia land parcels traded at half current levels. The assets carry long-term lease commitments with investment-grade tenants, most signed before power costs in the region rose 40 percent since early 2023.
The timing reflects two structural shifts. First, data center REITs are moving from speculative development to acquisition of stabilized assets with locked-in power allocations, a reversal from the 2018-2022 cycle when build-to-suit deals dominated. Second, private equity is rotating out of legacy digital infrastructure into AI-adjacent plays—Blackstone recently led a $16 billion raise for AirTrunk, an Asia-Pacific data center platform positioning for training cluster deployments. Digital Realty's willingness to issue $2.3 billion in stock signals confidence that public market valuations will hold as hyperscaler capex guidance for 2025 trends toward $250 billion combined across the big three.
Northern Virginia's constrained power grid remains the binding variable. Dominion Energy's interconnection queue currently holds 35 gigawatts of requests against 3 gigawatts of near-term available capacity, pushing new developments into 24-36 month timelines. Digital Realty's acquisition secures existing power allocations without construction risk, a premium worth paying when wholesale power purchase agreements in the region now require 10-year commitments at fixed rates. The company also inherits Blackstone's relationships with Loudoun County permitting offices, which have slowed approvals for generators and substation upgrades following residential opposition.
Operators should track Digital Realty's debt refinancing moves in Q1 2025—the $1.2 billion cash portion likely draws on revolver capacity that will need termed out. Watch also for AWS and Microsoft lease renewal activity across these three facilities through mid-2025, as any non-renewals would indicate hyperscalers are shifting capacity to owned campuses under construction in nearby Manassas. Blackstone's AirTrunk positioning suggests the firm sees higher returns in greenfield Asia-Pacific markets where power costs remain 30 percent below U.S. equivalents and land assembly is less constrained.
Dominion Energy's next transmission planning report, due March 2025, will clarify whether the 8 gigawatts of proposed substation capacity in Loudoun County advances to construction, or whether data center operators face a multi-year supply ceiling that makes existing assets worth replacement cost plus scarcity premium.