Alliant's 60% Load Surge Could Support More Than 7% EPS Growth-If Execution Holds Through 2029

Demand is the new catalyst in Alliant's utility story

Alliant still looks like a steady utility, but the demand picture around it has improved materially. Contracted data center demand rose to 3 GW, a 50% increase, management now expects 60% load growth by 2031, and it has said large customer load is expected to materialize in 2026. For investors, that matters because more load can extend the earnings runway beyond a single strong quarter.

The main question is no longer whether demand exists. It is whether Alliant can convert that demand into rate base and earnings without losing control of costs or timing.

The real debate is execution, not demand

Alliant's response has been to invest more. The company lifted its four-year capital expenditure forecast by 17% to $13.4 billion, a sign that management sees a path from customer demand to infrastructure spend. That is exactly what utilities investors want to see: capital deployed into a regulated franchise where, if approved, it can support earnings over time.

The latest quarter still points to steady execution. Alliant reported second-quarter GAAP EPS of $0.65, slightly below the year-ago quarter, but it continued to track in the upper half of its 2026 ongoing EPS range of $3.36 to $3.46. That does not prove the longer-term upside yet. It does show that the baseline remains intact while new demand moves closer to realization.

Why more load can support higher EPS in a regulated model

The core logic is straightforward. In a regulated utility model, earnings can grow as capital goes into the system and regulators authorize a return on that investment. More load usually means more grid and generation investment, and more investment can mean more rate base if projects are built on time and recovered in rates.

The starting point is already a compounding story

Alliant entered 2026 with a solid baseline. The company posted 2025 ongoing EPS of $3.22 and has pointed to more than a decade of compound annual earnings growth above 6%. For 2026, management is guiding to $3.36 to $3.46, which represents a 6.6% increase over 2025. That is steady utility growth, not explosive growth.

The incremental change is the load outlook. Alliant first highlighted 3 GW of contracted data center demand, and in the first quarter it said total contracted data center demand is now approximately 3.4 GW after signing an approximately 370 MW electric service agreement in Iowa. Management also said large customer load expected to materialize as forecasted in 2026.

If that load translates into permitted infrastructure investment, Alliant may be able to grow earnings at a rate that is a bit more supportive than the prior steady-state baseline. The key word is may: the earnings effect depends on timing, capital deployment, and regulatory recovery.

The bull case: a durable utility with a longer growth runway

The bull case does not require story-stock logic. It requires three conditions:

• New customer load turns into actual utility capital spending.
• That spending enters rate base as projects are completed and authorized.
• Costs, interest, and execution stay within manageable bounds.

If those conditions hold, Alliant could keep doing what it did in 2025-delivering steady ongoing EPS growth-while giving the market a reason to view the company as a utility with a longer growth runway than peers with flatter demand.

The bear case: spending can outrun earnings for a while

The main risk is timing. Utilities do not get paid for unbuilt assets, and large customer demand does not instantly become earnings. A bigger capital plan can raise execution risk, project-timing risk, and sensitivity to cost overruns.

That is why the latest quarter still matters. Alliant's results remaining in the upper half of guidance suggests management still has the year under control, but it is not the same as proving the full upside from new load. For now, the watchpoint is whether demand becomes earnable earnings, not just megawatts on paper.

What to watch from Alliant through the rest of 2026

Alliant has already shown it can defend a steady baseline: management has reaffirmed its full-year 2026 earnings guidance across several quarters, and results are trending in the upper half of the range. That makes the setup durable, even if it is not yet exciting.

Signals that support the bull case

• Another quarter that beat analyst expectations, showing management still has room to work within the 2026 range.
• Management said large customer load is expected to materialize in 2026; reaffirming that timing would move more of the growth story closer to realization.
• Management highlighted three data centers making significant construction progress, which is a positive sign that demand may turn into utility spending.
• Recent earnings were supported by higher regulated revenue from expanding rate base at the operating utilities, the clearest mechanism for turning infrastructure investment into earnings.
• The quarter also showed the model can absorb pressure: warmer weather and higher costs did not derail results.

What could weaken the thesis

• If large customer load slips beyond 2026, the thesis shifts from execution risk to delay risk.
• If data-center construction does not become utility capital spending that can enter rate base, the growth premium is unlikely to widen.
• If weather or operating pressures worsen, the cushion that helped the latest beat could shrink.
• If management stops holding the same forecast, investors will start questioning credibility rather than just timing.

For now, the practical read is simple: Alliant looks constructive as long as guidance holds, but investors still need proof that new demand is turning into infrastructure investment and earnings. It remains a show-me-growth utility story, not just a yield story.