Data center operators turn to on-site power and real estate scale to close 300 GW capacity gap
Data center developers are hitting a hard constraint: power. AI demand is accelerating faster than the grid can deliver, forcing operators to build generation capacity themselves rather than wait years for utility interconnection.
At Data Center World 2026, JT Steenkamp, vice president of projects and technology at Prologis Mobility, outlined how distributed on-site generation paired with large real estate platforms is closing the gap between demand and available capacity.
The scale of the shortage
The US faces roughly a 300 GW shortfall by decade's end, according to Steenkamp. The country needs 200 GW of new AI-driven capacity while also retiring 104 GW of existing power infrastructure.
Utility interconnection queues are growing rapidly, but completion rates remain low. Lawrence Berkeley National Laboratory data shows requests have surged while only a small share of projects reach completion, stretching timelines and adding uncertainty.
Operators are building their own power
Data center companies and infrastructure firms are announcing generation projects at scale, primarily natural gas with smaller contributions from nuclear restarts, fuel cells, and energy storage.
The shift reflects a basic reality: waiting for grid connections is no longer viable. On-site generation, deployed in parallel with or ahead of utility interconnection, lets operators reduce risk and accelerate timelines.
Real estate platforms become power infrastructure
Large logistics real estate portfolios are positioned as bridges between energy and digital infrastructure. Sites often sit close to population centers, are already permitted for industrial use, and can host both data centers and generation systems.
This combination enables integrated microgrids and modular generation that operate alongside the grid. The goal is not replacing utility power but providing near-term capacity while long-term connections catch up.
Steenkamp framed it as a resiliency play. The grid remains essential, but on-site systems complement it.
No single technology dominates
Generation strategies involve trade-offs across four factors: dispatchability, fuel flexibility, scalability, and lifecycle cost.
Reciprocating engines and linear generator designs are gaining traction due to fast deployment and operational flexibility. Fuel cells offer higher efficiency but face cost and durability constraints that limit near-term scaling.
Energy storage remains critical for stabilizing on-site systems, particularly for data center workloads sensitive to power fluctuations.
Power availability now shapes site selection
Access to capacity is becoming as decisive as fiber connectivity or tax incentives in data center strategy.
Distributed generation paired with large real estate platforms reduces interconnection risk, accelerates project timelines, and adds system resilience. For real estate teams, that means power infrastructure is now part of the core site value proposition.
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