Constellation Energy CEO Joseph Dominguez delivered an unambiguous message during the company's Q2 2026 earnings call: the power plants already operating across the US grid—not those in planning or permitting stages—form the bedrock for meeting surging data center electricity demand.

The race to power AI-driven data center expansion has become one of the most pressing challenges for both the technology sector and the electric utility industry, with hyperscalers and developers increasingly competing for access to large, reliable sources of electricity. Dominguez's positioning reflects a broader industry recognition that the bottleneck is no longer just compute or capital—it is available, dispatchable power.

The Case for Existing Infrastructure

Constellation controls approximately 55 GW of generation capacity, with roughly 22 GW derived from its nuclear fleet, making it the largest nuclear operator in the United States. Nuclear plants are particularly attractive for data center customers because they provide around-the-clock carbon-free baseload power, a profile that matches the nonstop operational requirements of large-scale computing facilities. Dominguez emphasized that the economy cannot wait for new power plants to come online. Data center operators require reliable electricity immediately, and the current grid possesses substantial untapped capacity that can be redirected to meet that demand.

Peak power challenges, Dominguez noted, can be addressed through battery storage and demand response solutions. Constellation is pursuing both grid-supplied and co-located power arrangements for its data center clients.

Texas Interconnection Queue Reaches 474 GW

Texas' interconnection queue has amassed approximately 474 GW of large-load interconnection requests, the overwhelming majority stemming from data centers. For context, that figure is roughly five times the highest peak electricity demand Texas has on record. The scale of the queue illustrates the magnitude of planned data center buildout in the state, which has attracted developers due to its deregulated market structure and abundant land and energy resources.

The Batch Zero interconnection process is presently paused pending an audit. Constellation stated it does not expect any meaningful delays to result from the review.

Nuclear Uprates and Calpine Portfolio Cleanup

Constellation has identified roughly 1.1 GW of potential nuclear uprates across its facilities. Uprates enable existing reactors to generate additional electricity without new physical construction, providing a faster and more cost-effective path to increased output—a significant advantage when new nuclear or large-scale generation projects can take a decade or more to build.

The company is also working through asset sale obligations associated with its acquisition of Calpine, a deal that added a substantial fleet of natural gas and renewable generation to Constellation's portfolio. The most recent transaction involved the sale of its 606 MW Brazos Valley gas plant for $860 million. Once these divestitures are finalized, Constellation expects to operate a streamlined portfolio with greater flexibility to execute data center contracts currently in its pipeline.