The AI infrastructure boom is translating into unprecedented power demand, with U.S. utilities collectively projected to spend a record $240 billion in capital expenditures in 2026. That figure reflects a step-change in grid investment driven by hyperscaler data center load growth, electrification, and reliability mandates — all arriving simultaneously.

The three names most directly in focus are NextEra Energy (NEE), Duke Energy (DUK), and Southern Company (SO). NEE posted $25.8B in revenue (+9.8% YoY) with a 20.7% net margin, the strongest profitability of the trio. DUK delivered $31.7B (+5.6% YoY) at a 16% net margin, while SO reported $28.9B (+8.1% YoY) at a 14.4% net margin. All three are growing meaningfully, and the capex cycle is the central thesis for each.

The bull case is straightforward: record capex compounds rate-base, which in turn supports regulated earnings growth that utilities can take to their commissions for approved returns. AI load additions are additive on top of existing residential and industrial demand, and utilities are among the few sectors where demand visibility is measured in decades rather than quarters.

The bear case is just as concrete: $240 billion in spending has to be financed. Regulated utilities routinely turn to equity offerings, which dilute existing shareholders. Rising long-duration Treasury yields — a persistent 2024-2025 headwind — compress utility multiples, and any slowdown in data center construction timelines could leave utilities overbuilt relative to near-term load growth.

What to watch: regulatory commission rate cases (especially in Florida, North Carolina, and Georgia), Federal Reserve rate trajectory, hyperscaler capex guidance on Q-calls, and whether NEE's clean energy backlog continues to expand faster than the sector average.