Alliant Energy Corporation (NASDAQ: LNT) — A Flat-Load Utility Re-Coded as a Data-Center Grower, at Its Richest-Ever Price

Independent Equity Research Report date: 2026-07-11 | Price basis: $76.40 (2026-07-10 close) Sector: Utilities · Regulated Electric & Gas (Multi-Utility) | CIK 0000352541 | Fiscal year: December

⚡ Claude’s Take

This block is the author’s own independent opinion and general information only — not investment advice. The analysis that follows (Sections 1–15) takes no position and carries no price target by design.

Verdict: HOLD — a genuinely good, ~98%-regulated Midwest utility that has been re-rated on a real (but not-yet-earned) data-center story to the most expensive it has ever been. Own the ~9–10% total-return algorithm, not the multiple. Not a short. Accumulation zone sub-$62–65; fair-value zone ~$62–72.

Alliant is a clean, well-run regulated electric-and-gas utility operating in two of the more constructive rate jurisdictions in the country — Iowa (advance-ratemaking pre-approval; full fuel pass-through) and Wisconsin (forward test years). It has raised its dividend for 22 consecutive years, compounded earnings at >6% for a decade, and is now sitting on a genuinely rate-based load-growth story: ~3–3.4 GW of executed hyperscaler data-center agreements (Google’s Big Cedar campus, QTS’s $10B Cedar Rapids build) that management expects to lift peak demand ~50% by 2030 and that has driven a ~17% increase in the four-year capital plan to $13.4B and a rate-base-plus-CWIP growth rate of ~12%/yr to ~$26.2B by 2029. The business quality is real and improving. The price is the problem. At $76.40 the stock trades at ~22.4x 2026E ongoing EPS ($3.41 mid), ~2.66x book, ~16.7x EV/EBITDA, and a ~2.8% forward yield — and on its own decade of history it sits in the ~99.8th percentile on P/E, P/B and P/S simultaneously: the most expensive Alliant has ever been. You are paying a premium multiple to faster-growing AEP (~12.6x) and Xcel (~13.9x) for a company whose EPS algorithm is ~7%.

The framing that matters: this is a low-vol / bond-proxy name (AZI beta 0.19; factor-nearest neighbors are all Midwest utilities — DTE, CMS, WEC, PPL) whose 2024–26 run to an all-time high was driven first by the Fed rate-cut pivot and then by a genuine re-coding of the growth rate on data centers. The re-coding is fundamentally justified — this is not WEC’s thinner “halo” — but the market has now priced the 2027–2030 ramp as largely de-risked while the load is still contracted, not delivered (full ramps stretch to 2030–2031, minimum-take floors are undisclosed, and the incremental 2–4 GW pipeline is explicitly excluded from the plan). My fair-value zone is ~$62–72 (a still-premium ~18–20x forward), with real accumulation interest sub-$62–65, where the yield rebuilds toward ~3.3% and the multiple returns toward its own mean. A routine de-rate from 22.4x toward Alliant’s own ~18x mean is roughly −18% — enough to erase two-plus years of EPS growth. Conviction: medium. Flip bullish if the 2–4 GW pipeline converts to signed ESAs and re-codes the algorithm to a sustained 8%+ (or rates fall structurally and the bond-proxy bid persists). Flip bearish if OBBBA’s PTC/ITC phase-out impairs the build economics and cash taxes, an affordability-driven ROE cut hits, or a hyperscaler ESA slips/cancels and strands new gas capacity. Tag: the right utility, the wrong entry price.

📈 Stock Price Action — Five-Year Event Map

Over the trailing five years Alliant round-tripped from a ~$46 trough (Oct-2023, the “higher-for-longer” bond-proxy bottom) up to an all-time high of $78.03 (early-Jul-2026), closing $76.40 on 2026-07-10 — just −2.1% off its high, at the top of a 52-week range of $61.85–$78.03. It trades above its rising 21-/50-/200-day EMAs (~$75.3 / $73.8 / $69.3) with an AZI beta of 0.19. [Price levels: Fact, AZI adjusted price CSV, 2026-07-10.]

Cycle narrative. (1) Alliant drifted higher into 2022 on the classic defensive bid. (2) It then absorbed a deep, ~18-month discount-rate drawdown to its five-year low of ~$46 in October 2023 that had nothing to do with the business and everything to do with the 10-year Treasury — a sub-0.2-beta dividend name trades as a bond substitute. (3) The September-2024 rate-cut pivot flipped the factor tailwind back on and drove a +37% recovery. (4–6) Beginning with the Q3-2024 call, the move re-based on a fundamental story for the first time in years: the Q3-2024 data-center demand signal, the February-2025 QTS $10B Cedar Rapids anchor, and the November-2025 raise of the four-year plan to $13.4B with a “7%+” 2027–2029 growth code. (7) The final leg to a fresh all-time high accompanied the February-2026 Q4 beat, the QTS Wisconsin-to-Iowa relocation (a headwind turned pivot), and the Q1-2026 fifth ESA (~370 MW) that lifted contracted load to ~3.4 GW — with 2026 EPS guidance of $3.36–$3.46 reaffirmed. Price moves are Fact; attributed causes are Interpretation. No price target, no recommendation — this is price history.

1. Executive Summary

Alliant Energy is a Madison, Wisconsin-headquartered ~98%-regulated electric-and-gas multi-utility serving ~1,010,000 electric and ~435,000 gas retail customers through two operating subsidiaries: Interstate Power and Light (IPL) in Iowa and Wisconsin Power and Light (WPL) in Wisconsin. FY2025 revenue was $4,362M (85% electric, 12% gas), EBITDA ~$1,871M (42.9% margin), GAAP diluted EPS $3.14 (net income $810M), and ongoing (non-GAAP) EPS $3.22 (+6% YoY). Beyond the utilities sits a small, low-risk non-utility sleeve — a 16% equity stake in the FERC-regulated American Transmission Company (ATC, ~$60M/yr equity income), the Travero rail/barge logistics business, and a 50% interest in a 225 MW Oklahoma wind farm — that collectively is ~2% of earnings.

The business is a textbook government-granted territorial-franchise monopoly reinforced by economies of scale — a wide but shallow moat: durable and low-loss-risk (Iowa and Wisconsin have no retail choice; IPL/WPL carry an exclusive obligation to serve), but with the same regulation that grants the monopoly setting the allowed return administratively (~9.65% ROE at IPL, ~9.80% at WPL). Consolidated GAAP ROE is a healthy ~19–20%, levered up from the ~9.7–9.8% allowed ROEs by thick ~51–55% equity layers and a thin ~17% common-equity-to-assets structure. Both jurisdictions are genuinely constructive: Iowa uses advance-ratemaking pre-approval (locking ROE and cost caps before building large generation — a structural de-risking of capex disallowance) and full fuel pass-through; Wisconsin uses forward test years and recently granted full recovery of a $205M solar cost overrun. The two honest caveats are WPL’s lack of an automatic retail fuel-cost adjustment clause (a structural weakness vs. IPL and most peers) and IPL’s 2025–2029 retail electric base-rate moratorium, which trades near-term rate-case optionality for stability and forces earnings to come from load growth and riders rather than base cases through 2029.

The growth case is a $13.4B 2026–2029 capital plan (raised ~17% in November 2025 on data-center load), ~100% rate-base-funded, targeting rate base + CWIP of ~$26.2B in 2029 vs. ~$16.9B in 2025 (~12% CAGR) and 7%+ ongoing EPS growth for 2027–2029 (the top of the historical 5–7% band). The demand kicker is real and rate-based: ~3–3.4 GW of executed hyperscaler electric-service agreements (Google Big Cedar, QTS Cedar Rapids $10B, plus a Q1-2026 ~370 MW Iowa ESA), expected to lift system peak demand ~50% by 2030, with ~11% retail-electric sales CAGR through 2029. The plan tilts toward ~$5.05B renewables/storage and ~$4.08B of new dispatchable gas to serve that load.

Three quality caveats sit behind the premium. First, earnings are heavily tax-credit-dependent: FY2025 carried a negative effective tax rate (−23%) on $362M of gross wind/solar PTCs and ITCs — worth ~$0.90–$1.15/share of EPS support — and the “One Big Beautiful Bill Act” (OBBBA) accelerates the phase-out of those credits and may limit LNT’s ability to transfer them, a structural threat to both reported EPS and cash taxes. Second, the growth is contracted, not yet delivered — full data-center ramps stretch to 2030–2031, minimum-take floors are undisclosed, the incremental 2–4 GW pipeline is excluded from the plan, and Wisconsin regulators are actively tightening the large-load tariff framework (the Meta/Beaver Dam ICR was approved only after modifications, with the PSCW criticizing a “black box” approach). Third, the plan requires up to $2.4B of equity issuance through 2029 (~14% of the share base) plus heavy debt into rising interest expense (+$118M over two years) — a real, if paced, dilution and financing drag that is why ~12% rate-base growth converts to only ~7% EPS growth.

The single most important fact for an investor is price: on its own decade of history Alliant sits at the ~99.8th percentile on P/E, P/B and P/S simultaneously — the richest it has ever been — commanding a premium EV/EBITDA to faster-growing peers for a mid-pack growth algorithm. This memo takes no position and sets no target; it lays out the embedded expectations, the scenarios, and what would falsify each side.

2. Business Overview

Alliant Energy Corporation is a public-utility holding company whose economic substance is almost entirely regulated electric and gas distribution and generation in the upper Midwest. The corporate structure is clean and easy to understand — the antithesis of a conglomerate:

• Interstate Power and Light (IPL) — the Iowa utility. Generates and distributes electricity and distributes/transports natural gas to ~505,000 electric and ~230,000 gas retail customers in Iowa; makes wholesale electric sales in Iowa, Minnesota and Illinois (the Southern Minnesota Energy Cooperative wholesale contract expired in 2025); and historically generated steam in Cedar Rapids (IPL exited the steam business after year-end 2025, immaterial). IPL is the larger and faster-growing subsidiary and the epicenter of the data-center story.
• Wisconsin Power and Light (WPL) — the Wisconsin utility. Generates and distributes electricity and distributes natural gas to ~505,000 electric and ~205,000 gas retail customers in south/central Wisconsin, plus FERC-regulated wholesale.
• Alliant Energy Finance (AEF) / non-utility & parent — holds (i) ATC Holdings: a 16% interest in American Transmission Company (a for-profit, FERC-regulated MISO transmission-only utility) plus 20% of ATC Holdco, contributing steady equity-method income of ~$60M/yr ($41M net / $0.16 EPS in FY2025); (ii) Travero: a supply-chain/logistics business (an Iowa short-line railroad, a Mississippi River barge/rail/truck terminal in Illinois, freight brokerage, and rail-served warehousing); and (iii) a 50% interest in a 225 MW non-utility wind farm in Oklahoma. This sleeve is small and, in the case of ATC, itself rate-regulated.

Revenue composition (FY2025). Electric utility revenue was $3,697M (85% of the $4,362M total), gas utility $525M (12%), other utility $51M, and non-utility $89M. A critical caveat for any utility: the top line is a poor signal. Electric revenue was ~flat 2023→2024 ($3,345M → $3,372M) before jumping to $3,697M in 2025 — but a large share of that movement is fuel-cost pass-through and weather, not underlying growth. The economically meaningful driver is rate base (the depreciated capital on which the utility earns its allowed return), which compounds through the capital program. Earnings, not revenue, are the scoreboard.

Segment earnings (FY2025, the map that matters), from the 10-K:

The story is entirely the regulated utility ($875M / $3.39), partially offset by a ~$0.41 parent/holdco drag (chiefly holding-company interest). How Alliant makes money: it invests shareholder and borrowed capital in regulated generation and grid assets, earns an administratively-set return (allowed ROE × the equity portion of rate base) plus recovery of depreciation and operating costs through customer rates set by the Iowa Utilities Commission and the Public Service Commission of Wisconsin, and returns ~60–70% of resulting earnings as a growing dividend while reinvesting the rest into more rate base. Recurring, monopoly, non-cyclical revenue with de minimis merchant/commodity exposure — the classic regulated flywheel.

Verdict: A cleanly structured, almost purely-regulated electric-and-gas utility — higher “regulated purity” than DTE (DTE Vantage) or AEE and comparable to WEC. Simple, durable, and easy to understand; the entire investment case rests on regulation and rate-base growth, not on any competitive or product dynamic.

3. Industry Dynamics

Regulated electric and gas utilities occupy an unusual structural position: legal monopolies with administratively-capped returns. The good news for an owner is a government-granted barrier to entry, an exclusive obligation to serve captive customers who cannot choose their supplier (Iowa and Wisconsin both prohibit retail electric choice), inelastic essential-service demand, and near-zero technological-disruption risk to the core wires-and-poles franchise. The bad news is that the same regulatory bargain caps the allowed return at ~9.4–9.9% ROE and subjects every dollar of capital, every rate increase and every cost recovery to a public commission whose posture can range from constructive to hostile — and whose ultimate constraint is customer affordability.

Profit pool and the capital cycle. In Marathon “Capital Returns” terms, regulated utilities are a curious case: high, stable, low-teens GAAP ROEs that do not attract disruptive new supply (entry is legally barred), so the usual capital-cycle mean-reversion does not operate through competition. Instead, the binding constraint is regulatory: when utilities over-earn or when bills rise too fast, commissions and legislatures compress allowed ROEs or disallow costs. The current environment is unusually favorable on the demand side — after ~two decades of flat-to-declining electricity demand (efficiency offsetting growth), data centers, electrification and onshoring have re-accelerated load growth for the first time in a generation. This is a genuine structural inflection that supports larger rate bases and, for the first time in years, volume-driven (not just capex-driven) earnings growth. The risk embedded in the euphoria is that (a) the entire sector has re-rated on the same narrative, and (b) rising bills from the capex surge collide with affordability politics.

Regulatory regime — the moat mechanism. Alliant operates in two of the more constructive US jurisdictions:

• Iowa (Iowa Utilities Commission, IUC). IPL can elect historical or forward-looking test periods; the IUC must rule within 10 months. The September-2024 order (RPU-2023-0002) set a 9.65% general ROE on a 51.0% equity layer, with a tiered rate base in which advance-ratemaking assets earn premium ROEs (Marshalltown gas 11.00%, Emery 12.23%, Whispering Willow-East wind 11.70%, wind portfolio 11.00%, solar 10.25%). Iowa’s advance-ratemaking-principles regime is a genuine structural advantage: IPL can lock in ROE and cost caps before constructing EGUs ≥300 MW or renewables, de-risking disallowance — precisely the mechanism now being used to rate-base data-center-serving generation. Iowa also provides full monthly fuel-cost pass-through. The order’s double-edged feature is a retail electric base-rate moratorium (Oct-2025 through Sep-2029) plus an earnings-sharing mechanism (excess ROE written down against the highest-earning asset): stabilizing, but capping IPL’s ability to re-file unless actual ROE falls ≥100 bps below authorized.
• Wisconsin (Public Service Commission of Wisconsin, PSCW). Forward test years only. The December-2025 order (2026/2027 test years) set a 9.80% ROE on a 54.5% equity layer, with base-rate increases of +$69M electric/+$7M gas effective 1/1/26 and a further +$75M electric/+$5M gas effective 1/1/27 — a constructive two-year plan (though the $69M electric award was ~54% of the $128M requested). The PSCW granted AFUDC on 100% of CWIP for projects hit by federal-law changes and allowed full return of and on ~$205M of WPL solar cost overruns (a materially constructive outcome). Wisconsin’s structural weakness for WPL is the absence of an automatic retail fuel-cost adjustment clause — it uses forecast fuel with monitoring bands and deferral only outside the band, with recovery reduced if WPL over-earns. In a fuel-price spike this is a real headwind that IPL does not carry.

Verdict: structurally good industry, at a good point in the demand cycle, with the usual regulatory ceiling. For Alliant specifically, both jurisdictions are top-quartile constructive (forward test years, riders, pre-approval, timely orders) — Iowa’s advance-ratemaking is arguably better than most. The industry is attractive; the caveats are affordability politics as bills rise and the sector-wide re-rating that has already priced much of the good news.

4. Competitive Position

Alliant’s “competitive position” is, in the Greenwald taxonomy, a government-granted franchise monopoly plus economies of scale within a fixed service territory. There is no product differentiation, no brand, no pricing power in the ordinary sense, and no meaningful direct competitor inside the franchise — the moat is entirely institutional. A retail customer in IPL’s or WPL’s territory cannot buy electricity from anyone else; the utility carries an exclusive obligation to serve. The durability of the franchise is essentially a legal fact, not a competitive achievement, and returns are set administratively rather than won competitively.

Name the mechanism, and pressure-test it. The moat is real but should not be over-romanticized. What it actually protects is a stable, low-teens achieved ROE on a growing rate base, with forward test years and riders that minimize regulatory lag — i.e., the ability to earn close to the allowed return on ever-larger capital with high predictability. What erodes it:

1. Adverse regulation — allowed-ROE compression, a hostile IUC/PSCW, or capex disallowance. The WPL solar-overrun episode (resolved favorably) shows the disallowance risk is live even in constructive states.
2. The IPL rate freeze — if data-center load disappoints through 2029, earnings must come from riders and volume rather than base-rate cases, removing a lever.
3. WPL’s weak fuel-recovery mechanism — a fuel-price spike could dent WPL earnings in a way IPL is insulated from.
4. Large-load loss / ESA cancellation — the new, concentrated hyperscaler load is the growth engine and a concentration risk; a cancelled ESA could strand purpose-built gas capacity.
5. Self-generation / municipalization / behind-the-meter — named competitive threats in the 10-K (hyperscalers procuring on-site or co-located generation, or municipalization petitions), currently minor but structurally the most interesting long-run threat to the “captive load” premise.

Versus peers. Alliant’s franchise is high-quality — roughly on par with WEC (same Wisconsin regulator; Iowa’s pre-approval regime is a genuine plus) and above the median regulated utility on the forward-test-year + pre-approval axis. It is not differentiated from WEC’s Wisconsin moat and is slightly weaker on fuel-recovery mechanics. The Greenwald “market-share stability / ROIC” tests are trivially passed (a legal monopoly has 100% stable share and earns its allowed return) but tell you little; the binding question is regulatory durability through a period of ~12% rate-base growth and rising customer bills.

Verdict: a durable, high-quality regulated franchise — but an institutional moat, not a competitive one, and no better than the best of its regulated peers. If a “moat” claim cannot be tied to a financial outcome that would deteriorate without it, it is not a moat — here the outcome (a predictable ~9.7% allowed ROE earned on a compounding rate base) is directly tied to constructive Iowa/Wisconsin regulation. Remove that, and the thesis breaks. The single most important variable is the durability of that regulatory bargain, and affordability tension is its real long-run stressor.

5. Growth History and Forward Opportunities

History. Alliant is a steady, unspectacular compounder. Ongoing EPS grew from ~$2.30 (2019) to $3.22 (2025) — a ~6% ongoing CAGR, with management touting a “>10-year track record of >6% compound annual earnings growth.” Dividends per share rose from ~$1.42 to $2.03 over the same period (~6% CAGR), with 2025 marking the 22nd consecutive annual increase. Revenue is a noisy, fuel-distorted signal (roughly flat electric revenue 2023→2024 before a fuel/weather-driven 2025 jump). The clean read is: mid-single-digit rate-base-driven EPS and dividend growth, low volatility, high reliability — a bond-like compounder.

The forward algorithm — where the re-rating comes from. The growth case is arithmetically simple and rate-based:

• Rate base + CWIP grows from ~$16.9B (2025) to ~$26.2B (2029), a ~12% CAGR, funded by ~$13.4B of capex (2026–2029) and up to $2.4B of equity issuance plus subsidiary debt.
• Management guides 2026 ongoing EPS of $3.36–$3.46 (~6.6% growth at the $3.41 midpoint over 2025’s $3.22) and a 7%+ ongoing EPS CAGR for 2027–2029 — explicitly raised to the top of the historical 5–7% band on data-center load.
• Underlying retail-electric sales are guided to a ~11% CAGR through 2029 with ~50% peak-demand growth by 2030 — a genuine volume inflection after two decades of flat load.

The demand engine. Unlike a load-growth narrative, this one has a clear financial transmission mechanism: signed electric-service agreements (ESAs) → advance-ratemaking / generation-certificate approvals → rate-based generation → rate base → EPS. Alliant has executed five ESAs totaling ~3–3.4 GW of contracted hyperscaler load (three under construction), anchored by Google’s Big Cedar Industrial Center near Cedar Rapids and QTS’s ~$10B Cedar Rapids campus (the largest capital investment in Iowa history), plus an April-2026 ~370 MW Iowa ESA backed by a contract for up to 1.1 GW of simple-cycle gas (in-service ~2031). Iowa’s 2024 Major Economic Growth Attraction (MEGA) program and Alliant’s development-ready “super parks” reinforce the pipeline, and the crucial moat feature is that a data center in Iowa/Wisconsin cannot choose its supplier — the load is captive to IPL/WPL.

Quality of growth — and the skeptical read. This is high-quality, rate-based growth if the ESAs ramp — it earns an authorized return, is backed by signed contracts, is de-risked by pre-approval and ~$3B of conditional DOE loan guarantees, and the ~$2.4B equity dilution is modest relative to the ~$9B rate-base increase, so it should be EPS-accretive. But three caveats temper the enthusiasm: (1) ~12% rate-base growth converting to only ~7% EPS growth reflects the equity-funding drag, rising interest expense, and earnings-sharing/moratorium caps — Alliant will not fully capture over-earning; (2) the growth is concentrated in a handful of hyperscaler counterparties and a 2027–2030 execution window exposed to interconnection, MISO capacity-accreditation, and IRA/§111(d)/OBBBA policy risk; (3) the largest incremental prize — the 2–4 GW additional pipeline — is explicitly excluded from the current plan, i.e., it is optionality the multiple may already be pricing.

Verdict: high-quality, contract-backed, rate-based growth — materially higher-visibility than the flat-load utility Alliant was two years ago — but the algorithm is ~7%, the 8%+ upside is uncontracted, and the ramp carries real 2027–2031 execution risk.

6. Financial Quality

Profitability. Alliant earns a steady, healthy consolidated ROE of ~19–20% (FY2025 19.7%), levered up from ~9.7–9.8% allowed ROEs by a thin ~17% common-equity-to-total-assets structure and thick 51–55% regulatory equity layers. EBITDA margin is ~43%, operating margin ~23%. On invested capital, ROIC is a more sobering ~6% (ROIC.ai return-on-invested-capital ~6.0%) — appropriate for a regulated utility whose returns are administratively capped and whose asset base is enormous relative to earnings; the gap between the ~20% ROE and ~6% ROIC is the leverage in the capital structure. This is not a high-return-on-capital business; it is a high-return-on-thin-equity business, and that leverage is regulator-blessed.

Earnings quality — the tax-credit dependency (a key gotcha). FY2025 carried a negative effective tax rate of −23% — a $149M tax benefit on $661M of pre-tax income. The driver: $362M of gross federal wind/solar tax credits (PTCs −$206M, ITCs −$156M), partially offset by a +$112M “tax-credit regulatory deferral” that passes a large share of those credits back to ratepayers (as a regulatory liability). The net credit benefit retained by shareholders is ~$250M, but reported net income and the effective tax rate remain heavily credit-dependent — worth roughly $0.90–$1.15/share of EPS support, and management guides the 2026 effective rate lower still as more projects enter service. This is the single most important quality caveat: a material slice of Alliant’s earnings is a policy artifact. The OBBBA accelerates the phase-out of PTCs/ITCs and may limit LNT’s ability to transfer credits for cash — a structural threat to both reported EPS and (more importantly) cash taxes and the self-funding of the capex plan. Normalize the credit tailwind and Alliant’s underlying earnings power is lower and its cash-tax burden higher than the GAAP optics suggest.

One-time items — normalize before comparing years. ROIC/GAAP headline EPS is noisy:

• FY2024 GAAP EPS ($2.69) is depressed by ~$0.31 of charges — an IPL Lansing Generating Station asset-valuation charge ($44M / $0.17, from the 2024 Iowa order), restructuring/voluntary-separation ($20M / $0.08), and an ARO steam-asset charge ($15M / $0.06). Use ongoing $3.04 for the 2024→2025 growth read.
• FY2025 GAAP EPS ($3.15) vs. ongoing $3.22 — a small $12M ($0.05) non-utility asset-valuation charge (Travero wind-blade recycling suspension) plus $8M ($0.03) of state-tax apportionment.
• The proper growth read is ongoing $3.04 (2024) → $3.22 (2025), +6%, toward $3.41 (2026E mid).

Cash flow — deeply negative FCF, and that is normal (another gotcha). A third-party aggregator (ROIC.ai) maps Alliant’s “Construction and acquisition expenditures” cash outflow (~$2,483M in 2025) to “acquisitions of subsidiaries,” implying ~$2.5B/yr of M&A. This is wrong — it is construction capex (new wind/solar/storage/gas plants and grid; 2025 = IPL $1,473M + WPL $804M + Other $206M), and Alliant has done no material business acquisitions in five years — it is entirely organic. With operating cash flow of ~$1.17B against ~$2.5B of capex, free cash flow is structurally negative — as it should be for a rate-base compounder in a build cycle. Do not value Alliant on FCF; the return comes from rate base × allowed ROE, funded externally by design. (ROIC.ai’s reported “positive FCF” for 2025 is an artifact of its mis-mapping and should be ignored.)

Balance sheet — levered, as utilities are. Total debt ~$12.1B, net-debt/EBITDA ~6.2x, total-debt-to-capital ~74%, EBITDA/interest ~3.85x. Interest expense has climbed to $512M (2025) from $394M (2023) — +$118M in two years — a live and rising cost of the ramp. Credit ratings are solid-investment-grade and stable: parent S&P BBB+ / Moody’s Baa2; IPL BBB+/Baa1 (with a Q1-2026 S&P upgrade to A-); WPL A-/Baa1. The leverage is normal for the model but leaves limited cushion, and the combination of ~$2.4B equity issuance and heavy debt into higher rates is why ~12% rate-base growth converts to only ~7% EPS growth.

Verdict: do economics improve with scale? Modestly. Alliant is a well-run, financially sound utility earning close to its allowed return with high reliability — but it is a capital-sink, tax-credit-supported, externally-funded compounder, not a self-funding cash machine, and its true earnings power is flattered by a policy tailwind now facing legislative rollback. The economics are stable and adequate, not improving-with-scale in the way a genuine operating-leverage business would show.

7. Capital Allocation

Capital allocation at a growth utility is largely mechanical — the overwhelming use of capital is rate-base construction — but the discipline questions still matter, and Alliant scores well on the ones it controls.

The capital plan. The $13.4B 2026–2029 plan splits ~62% to IPL/Iowa (~$8.26B) and ~34% to WPL/Wisconsin (~$4.52B), with ~$625M at the parent/non-utility. By category: ~$5.05B renewables & storage (38%), ~$4.08B new dispatchable gas generation (30%), and ~$3.75B grid/distribution (28%) — a deliberate tilt toward gas to serve dispatchable large-load demand. This is capital deployed into pre-approved, rate-based assets earning an authorized return — the highest-confidence “capital allocation” a utility does. Management has signaled the plan may rise at the Q3-2026/EEI update as the new 370 MW load and refreshed MISO accreditation are folded in.

Financing — real but paced dilution. The plan is funded with up to $2.4B of common equity (2026–2029) via an ATM-with-forward structure plus the ~$25M/yr direct-purchase plan. At year-end 2025, 14.6M forward shares (~$941M at a weighted-average $64.44) were outstanding to be physically settled in 2026–2027 — a near-term ~5.7% overhang; the full $2.4B at ~$64 would be ~37M shares (~14% of the 257M base) over four years, offset by rate-base-driven EPS growth. Debt issuance is heavy (~$2.47B in 2025) into rising rates. The equity is issued below the current share price (~$64 forward vs. $76.40 spot) — modestly value-additive relative to funding at today’s premium, though issuing equity at any price to fund sub-allowed-ROE assets is the perennial utility dilution tax.

Dividend. DPS rose $1.81 (2023) → $1.92 (2024) → $2.03 (2025), with the November-2025 raise to a $2.14 2026 target (+5%) — the 22nd consecutive annual increase, at a ~64% payout squarely within the 60–70% goal. Dividend growth (~5–6%) tracks EPS growth; this is a reliable, well-covered, but not high-yield income stream (~2.8% forward).

M&A and buybacks — appropriately absent. No material acquisitions (organic only); WPL sold partial West Riverside interests to neighboring utilities (a small divestiture). No buyback program — the only “repurchases” were 8,220 shares for a deferred-comp rabbi trust. Correct behavior for a utility raising equity to fund rate base.

Insider behavior — routine, mildly positive. Across the five-year, 179-filing Form 4 corpus, activity is overwhelmingly routine grants (187 A), tax-withholding (30 F), and derivative/option items — with a single open-market sale in five years and three small open-market purchases: CEO Lisa Barton (+1,100 shares @ $48.56, Feb-2024, near the multi-year low), EVP Raja Sundararajan (+500 @ $48.26), and director Nancy Falotico (+1,200 @ $61, Jun-2022). Well-timed but trivial in size — symbolic, not conviction-scale. The signal is absence of selling pressure, not accumulation.

Incentive alignment. The 2026 proxy shows annual incentive weighted 70% to consolidated EPS from continuing operations (2025 actual $3.24 → 98% payout), with small customer/reliability, environmental and safety components (safety missed); long-term incentives are 35% relative TSR (vs. the EEI Electric Index) + 35% absolute net-income growth + 5% renewables plus time-vested RSUs. Comp is EPS- and TSR-centric — well-aligned with shareholders, but the heavy EPS weighting incentivizes the very capex-and-equity growth engine the thesis must scrutinize: management is paid to grow the plan, so the plan’s size should be read with that in mind.

Verdict: intelligent, disciplined, and appropriate capital allocation for a regulated utility — organic rate-base growth, a reliable dividend, no empire-building M&A or ill-timed buybacks, and equity issued below spot — with the only real critique being that the entire model is a low-return-on-capital capital sink whose scale is incentivized by EPS-linked pay.

8. Changes and Headwinds — Last Two Years

A chronological read of the material developments since 2024:

• Oct-2023 → Jan-1-2024: CEO succession — Lisa Barton (ex-AEP; joined LNT Feb-2023 as President/COO) became President & CEO; John Larsen moved to Executive Chairman.
• 2023–2024: Coal transition advances — Lansing (IA) retired (converting to a 150 MW storage site); IPL placed 400 MW of solar (2024).
• Nov-2024 (Q3’24 call): First public data-center demand signal — the load-forecast update that begins the re-rating.
• Feb-2025: QTS Cedar Rapids ~$10B campus announced — the anchor tenant that concretizes the story.
• May-2025: IUC approves individual customer rates (ICRs) for certain Iowa data centers; John Larsen retires as Executive Chairman (now a non-executive director) — leadership transition complete.
• Sep-2025: WPL files a unanimous Wisconsin rate settlement for 2026–2027.
• Nov-2025: Capital plan raised ~17% to $13.4B; 3 GW / ~50%-peak-demand framing formalized; 2027–2029 growth lifted to “7%+”; 2026 dividend target set at $2.14 (+5%).
• Dec-2025: PSCW approves the WPL 2026–2027 settlement — ROE 9.80%, ~54.5% equity, +$69M electric for 2026; constructive but a partial award (~54% of the request). Iowa: IPL wind advance-ratemaking (up to 1,000 MW, blended ~9.8% ROE, $3,020/kW cost cap) advances.
• Late-2025/early-2026 (headwind → pivot): QTS relocated its ~900 MW project from DeForest (Madison, WI) to Iowa after annexation/rezoning friction — a Wisconsin setback turned into an Iowa win, with capex reallocated WI→IA and a new ESA signed.
• Feb-2026: Q4’25 beat; Iowa IUC approves Bobcat Energy Center (720 MW simple-cycle CT) + 94 MW RICE; IPL fuel-switches/retires additional coal units.
• ~May-2026: WI PSC approves the Meta/Beaver Dam large-load ICR with modifications, strengthening existing-customer protections and criticizing a “black box” approach (an ALJ had forced a less-redacted refile) — the clearest sign regulators are tightening the large-load framework.
• Jul-2026: TD Cowen initiates at Hold ($83 target); new 52-week/all-time high (~$76–78). Alliant removed from the Russell 1000 Dynamic index (a factor-flow event, not fundamental).

Headwinds to weigh: (1) OBBBA PTC/ITC phase-out — the biggest structural risk to the earnings tailwind and self-funding; (2) rising financing costs — low-coupon legacy debt refinancing at higher rates, a structural EPS-conversion drag; (3) affordability politics as bills rise (WPL residential bills +~$9.57/mo in 2026, +$17.45/mo in 2027) — the ultimate constraint on the constructive-regulation bargain; (4) regulators tightening large-load tariffs (Beaver Dam); (5) execution/ramp risk on 2027–2031 data-center timing (interconnection, MISO accreditation); (6) coal-retirement timing (Columbia, Edgewater) subject to MISO capacity delays and a June-2026 federal coal-life-extension push.

Verdict: on balance these developments strengthen the thesis — the data-center re-rating is fundamentally grounded, regulation remains constructive, and the leadership transition is complete — but they also lengthen the list of policy and execution dependencies the current premium multiple is now underwriting.

9. Risk Analysis

The dominant risk is valuation-and-rates, not fundamentals. The business is unlikely to break; the stock can de-rate meaningfully if rates back up, the low-vol factor rotates, or the policy/execution dependencies (OBBBA, ESA ramps) disappoint. Catastrophic loss risk is very low.

10. Valuation Discussion (Embedded Expectations)

No price target, no recommendation. This section frames the embedded expectations and scenarios.

Where the stock trades. At $76.40, Alliant trades at:

• ~22.4x 2026E ongoing EPS ($3.41 mid) and ~24.3x TTM GAAP EPS ($3.15);
• ~2.66x book value ($28.68/share);
• ~16.7x TTM EV/EBITDA (EV ~$31B on ~$19.7B market cap + ~$11.6B net debt);
• ~2.8% forward dividend yield ($2.14 target).

The valuation tell — richest ever on its own history. Alliant’s own-history percentile ranks are unambiguous: at $76.40 it sits in the ~99.8th percentile on P/E, P/B and P/S simultaneously (composite ~99.8th) — the most expensive it has been in a decade-plus of data. This is not a cross-sectional statement (utilities always screen “expensive” on absolute multiples); it is the far sharper own-history statement: investors have never paid more for a dollar of Alliant’s earnings, book or sales. The re-rating is partly justified by a genuinely faster, data-center-driven growth code — but the multiple now assumes that faster code is both durable and de-risked.

Cross-sectional comps. Within the multi-utility group, Alliant’s ~22.4x forward P/E is at the top of the range for a ~7% grower:

Alliant commands a ~9-turn P/E premium to AEP and Xcel — both faster growers with their own data-center stories. The premium is defensible only if one believes Alliant’s regulatory quality, balance sheet, and data-center visibility are enough to justify paying up for a slower algorithm. That is a real argument (Iowa’s advance-ratemaking is genuinely superior), but it is a rich one.

Embedded-expectations math. The forward return decomposes cleanly: ~2.8% dividend yield + ~7% EPS/dividend growth ≈ ~9.8% gross annual return — but only if the multiple holds. The multiple is doing the heavy lifting. A routine re-rate from 22.4x toward Alliant’s own ~18x historical mean is roughly −18%, which would erase two-plus years of EPS growth; a move to a still-premium ~20x is ~−10%. Conversely, if the 2–4 GW pipeline converts and the algorithm re-codes toward a sustained 8%+, the current multiple can be defended and the yield-plus-growth return compounds.

Scenario framing (illustrative, not targets):

• Bear (~$55–62): rates back up and/or the low-vol factor rotates; OBBBA impairs the credit tailwind; multiple reverts to ~17–18x on ~$3.30–3.45 EPS. A ~2022–2023-style discount-rate drawdown.
• Base (~$62–72): the algorithm delivers ~7% EPS growth, regulation stays constructive, and the multiple normalizes toward ~18–20x forward — a mid-single-digit total return dominated by yield + growth, minus modest multiple give-back.
• Bull (~$80–90+): the 2–4 GW pipeline converts to signed ESAs, the plan and rate base step up again, EPS re-codes toward 8%+, and the market sustains a 22–24x “AI-power” multiple as the low-vol bid persists.

What the market is underwriting correctly: a genuine, rate-based, contract-backed load inflection in two constructive jurisdictions run by a competent team. What it may be underwriting too generously: that the 2027–2031 ramp is de-risked, that the tax-credit earnings tailwind survives OBBBA, and that a ~7% grower deserves a top-of-peer-group, richest-ever multiple.

11. Variant Perception

Consensus belief. Alliant is a high-quality, constructively-regulated Midwest utility with a rare, genuinely rate-based data-center load-growth story that supports a raised $13.4B capital plan, ~12% rate-base growth, and a 7%+ EPS algorithm — deserving of a premium multiple and a place among the best “AI-power” utility ways to play electrification. Sell-side is clustered Hold-to-mildly-positive (TD Cowen Hold $83; RBC Outperform), with the stock trading at the top of the target band — i.e., the market treats the data-center optionality as largely de-risked.

Strongest bull case. The load inflection is real, contracted, and captive (no retail choice); Iowa’s advance-ratemaking uniquely de-risks the capex; the 2–4 GW pipeline is free optionality not in the plan or numbers; the balance sheet just earned an IPL upgrade; and a 0.2-beta, 22-year dividend-grower with a re-coded 7–8% algorithm is exactly what income-and-low-vol investors bid up in a rate-cutting cycle. If the pipeline converts, today’s price looks reasonable in hindsight.

Strongest bear case. You are paying the richest-ever multiple (99.8th percentile, own history) and a premium to faster peers for a ~7% grower whose earnings are ~$1/share dependent on tax credits that OBBBA is phasing out, whose growth is contracted-but-not-delivered (2030–2031 ramps, undisclosed minimum-takes), whose regulators are actively tightening the large-load bargain, and which must issue ~14% of its share count and refinance into higher rates. The 2024–26 run was half rate-driven; a rate backup reruns the Oct-2023 −27% playbook and the multiple gives back years of growth.

The 3–5 assumptions that matter most, and what would falsify each:

1. Constructive Iowa/Wisconsin regulation persists through 12% rate-base growth. Falsified by an ROE cut, a material disallowance, or an affordability-driven backlash.
2. The ~3.4 GW of ESAs ramp on schedule and the 2–4 GW pipeline converts. Falsified by an ESA slip/cancellation or a stalled pipeline — stranding gas capacity and re-flattening the algorithm.
3. The PTC/ITC earnings tailwind survives OBBBA. Falsified by credit phase-out/transferability limits materially raising cash taxes and impairing self-funding.
4. The low-vol/bond-proxy bid and ~22x multiple hold. Falsified by a 10-year backup or a low-vol factor rotation → an ~18x de-rate.
5. ~12% rate-base growth converts to ~7% EPS despite ~14% dilution and rising interest. Falsified by EPS conversion slipping below ~6% as financing costs bite.

The factor-positioning read (Momentum agent). Alliant is a crowded low-vol / dividend-yield / bond-proxy trade (AZI beta 0.19; factor-nearest neighbors are all Midwest utilities — DTE, CMS, WEC, PPL; zero drift toward the AI-hardware complex) that has been a momentum winner within utilities: trailing-12-month return ~+26.5% (Sharpe ~1.5), six-month ~+41.6% annualized (Sharpe ~2.2), with a trivial ~−7% max drawdown. This is a stock the tape has bid up to an all-time high on a genuine fundamental re-code — not a falling knife. The variant-perception implication: consensus is not offsides on direction (the business really is better); it may be offsides on price — the momentum and low-vol factors have carried a ~7% grower to a valuation that leaves little margin of safety and a wide, rate-and-policy-driven downside if the factor tailwind reverses.

12. Fact vs. Interpretation Table

13. Open Questions

1. ESA minimum-take / stranded-cost terms — the downside protection on ~3.4 GW of contracted load is confidential; how much of the new gas capacity is protected if a hyperscaler slips or cancels?
2. 2–4 GW pipeline conversion — how much, and how fast, converts to signed ESAs and enters the plan? This is the swing factor between the base and bull cases.
3. OBBBA implementation — the precise timing and magnitude of PTC/ITC phase-out and transferability limits, and the cash-tax and self-funding impact.
4. Iowa 1,000 MW wind advance-ratemaking — final IUC decision (H1 2026) and blended ROE/cost cap.
5. Rate-base $ and CAGR precision — the exact rate-base figures live in IR decks, not filings; confirm the ~$26.2B/12% trajectory holds after the signaled Q3-2026 plan update.
6. Affordability ceiling — how much bill headroom remains before Iowa/Wisconsin regulators push back on the capex-driven increases?
7. FFO/debt trajectory — can Alliant fund ~$13.4B capex + $2.4B equity and hold its Baa2/BBB+ metrics as interest expense rises?

14. What Must Be True

For the bull case to work (price sustains / re-rates higher), ALL of the following must hold:

• Iowa and Wisconsin regulation stays constructive (no ROE cut, no material disallowance) through ~12% rate-base growth and rising bills.
• The ~3.4 GW of ESAs ramp on/near schedule and the 2–4 GW pipeline converts, re-coding the algorithm toward a sustained 8%+.
• The PTC/ITC earnings tailwind survives OBBBA well enough that EPS and self-funding are not materially impaired.
• The low-vol/bond-proxy bid and a ~22x multiple persist (rates stable-to-lower).
• Falsification test: if the 2027–2029 ongoing EPS CAGR prints below ~6%, or a hyperscaler ESA is cancelled/materially delayed, or the effective tax rate normalizes sharply upward on OBBBA — the growth re-code is broken and the premium multiple is unsupported.

For the bear case to work (meaningful de-rating), ANY of the following suffices:

• The 10-year Treasury backs up / the low-vol factor rotates out → an ~18x de-rate (~−18%) on the 0.19-beta bond proxy.
• OBBBA phases out the credits, raising cash taxes and forcing more equity/debt → EPS conversion slips and dilution worsens.
• An affordability-driven adverse rate order (ROE compression or disallowance) hits amid rising bills.
• A hyperscaler ESA slips or cancels, stranding purpose-built gas capacity and re-flattening the algorithm.
• Falsification test (of the bear): if Alliant delivers ≥7% ongoing EPS growth, converts a chunk of the 2–4 GW pipeline into signed ESAs, and holds its credit metrics and tax-credit economics through 2027 — the bear’s “priced for perfection” thesis is wrong and the premium is earned.

Synthesis: the bull and bear cases agree the business is good and improving; they disagree on whether ~7% growth plus policy/execution risk justifies the richest-ever multiple. That is a price disagreement, not a quality disagreement — which is exactly why the framing is “the right utility at the wrong entry price.”

15. Source Appendix

(Consolidated in the separate Source Appendix, Appendix B of the combined report. Primary sources: Alliant Energy FY2021–FY2025 Forms 10-K and the FY2025 10-K filed 2026-02-20; 2022–2026 DEF 14A proxy statements; Q4-2025 and Q1-2026 earnings releases and call transcripts; the trailing-60-month EDGAR corpus of 8-Ks and Forms 3/4/5; ROIC.ai fundamentals; AZI price CSV and valuation-index percentiles; FactorsToday factor/leaderboard data; and public regulatory orders of the Iowa Utilities Commission and the Public Service Commission of Wisconsin. Third-party sources are labeled; management commentary is treated as hypothesis and validated against filings and financials.)

Appendix A — Diligence Questionnaire

Alliant Energy Corporation (NASDAQ: LNT) — as of 2026-07-11

Fact/Interpretation/Assumption labeled where material.

General

What thoughtful questions have other investors asked about this company? The recurring institutional questions cluster on: (1) how contracted the ~3.4 GW of data-center load actually is — minimum-take floors, cancellation terms, and stranded-cost protection (all confidential); (2) whether the tax-credit-dependent earnings (−23% FY2025 effective rate) survive OBBBA’s PTC/ITC phase-out; (3) whether ~12% rate-base growth truly converts to 7% EPS given ~14% dilution and rising interest; (4) whether Iowa’s 2025–2029 rate moratorium and Wisconsin’s tightening large-load framework (Beaver Dam “black box”) constrain the upside; and (5) the perennial one — is a ~7% grower worth the richest-ever, top-of-peer multiple? (INTERPRETATION.)

Cyclicality & Earnings Nature

Are earnings at a cyclical high or low? Neither in the industrial-cyclical sense — regulated utility earnings are administratively set and low-cyclicality. But earnings are at a structural inflection point: after ~two decades of flat load, data-center demand is re-accelerating volume growth for the first time in a generation. (FACT/INTERPRETATION.)

Driven by the external environment or internal actions? Both. The re-rating is driven by an external demand shock (hyperscaler load) that management has capitalized on via signed ESAs, advance-ratemaking, and a raised capital plan. Reported earnings are also flattered externally by federal tax-credit policy (PTCs/ITCs). (FACT.)

How stable are revenues? Very stable at the earnings level (monopoly, essential service, riders). Revenue (top line) is noisier due to fuel-cost pass-through and weather — a poor signal. (FACT.)

Outlook for products/services? Growing: ~11% retail-electric sales CAGR guided through 2029; ~50% peak-demand growth by 2030. (FACT — management guidance.)

How big will this market be? Iowa/Wisconsin service territories are fixed, but load within them is growing rapidly on data centers and electrification. Domestic only; no international exposure. (FACT.)

Business Quality & Competitive Moat

Is the industry getting more or less competitive? Not competitive by design — legal monopoly, no retail choice in IA/WI. The demand side is improving (load growth); the long-run threat is behind-the-meter/self-generation by large customers. (FACT/INTERPRETATION.)

How profitable is the business (ROIC, ROE)? Consolidated GAAP ROE ~19–20% (levered by thin ~17% equity/assets); allowed ROEs ~9.65% (IPL) / 9.80% (WPL); ROIC ~6% (administratively capped). (FACT.)

How profitable is the industry / barriers to entry? Government-granted monopoly — the highest barrier to entry (legal). Returns capped by regulation. (FACT.)

Can the business be easily understood? Yes — two regulated utilities plus a tiny non-utility sleeve. Very clean structure. (FACT.)

Can it be undermined by foreign low-cost labor? No — a domestic, location-bound wires-and-generation franchise. (FACT.)

Do brands matter? No. No product differentiation or brand pricing power. (FACT.)

Nature of competition / switching costs? No competition inside the franchise; customers cannot switch suppliers (infinite switching cost, by law). (FACT.)

Financial Condition & Balance Sheet

Assets not fully recognized on the balance sheet? The ATC transmission equity stake (16%) is carried at equity-method book, likely below economic value; regulatory assets/liabilities are significant. (INTERPRETATION.)

Off-balance-sheet liabilities? Standard utility items — operating leases, purchase-power/PPA commitments, pension/OPEB, AROs. ~$3B of conditional DOE loan-guarantee commitments (financing, federal-action-exposed). (FACT.)

How conservative is the accounting? Standard regulated-utility accounting (ASC 980 regulatory assets/liabilities). GAAP EPS is depressed by one-time charges (2024) yet supported by net tax credits — use ongoing EPS. (FACT/INTERPRETATION.)

How CapEx-hungry is the business? Extremely — ~$2.5B/yr capex vs. ~$1.17B operating cash flow → structurally negative FCF, funded by external equity + debt. This is the model, not a red flag. (FACT.)

Capital Allocation & Management

How much FCF does the business generate; how is it used? Structurally negative FCF during the build cycle. “Free” cash is not the framework; return = rate base × allowed ROE. Capital is deployed into rate-based construction; ~60–70% of earnings paid as dividends. (FACT.)

Significant acquisitions recently? None — Alliant is entirely organic. The ROIC-reported ~$2.5B/yr “acquisitions” is construction capex, not M&A. (FACT — verified.)

Buying back shares? No buyback program (only 8,220 shares for a deferred-comp trust). It issues equity to fund capex. (FACT.)

Issuing large amounts of new shares to insiders? No — routine grants; ~$2.4B of market equity issuance planned 2026–2029 (~14% dilution). (FACT.)

Compensation policy of directors/management? Annual incentive 70% consolidated EPS + customer/environmental/safety; LTI 35% relative TSR + 35% net-income growth + 5% renewables. EPS/TSR-centric — aligned, but incentivizes plan growth. (FACT/INTERPRETATION.)

Motivations of management? CEO Lisa Barton (ex-AEP, since Jan-2024); CFO Robert Durian; leadership transition complete. Pay tied to EPS growth and TSR; insider open-market buying is trivial/symbolic. (FACT.)

Valuation & Market Data

Is the stock an ADR, MLP, or K-1 issuer? No — a US C-corp common stock (NASDAQ: LNT), 1099 dividends. (FACT.)

Dividend policy? ~60–70% payout target; 22 consecutive annual increases; $2.14 2026 target (+5%); ~2.8% forward yield. (FACT.)

How profitable is the business? ROE ~19–20%; adequate/stable, not improving-with-scale. (FACT.)

Is net income diverging from cash from operations? CFO (~$1.17B) exceeds net income (~$810M) via D&A, as normal; but capex vastly exceeds both, so FCF is negative. Watch the growing gap between GAAP EPS and cash taxes as OBBBA phases out credits. (FACT/INTERPRETATION.)

Risks & Downside

What factors would cause the stock to decline? A rate backup / low-vol factor rotation (0.19 beta → ~18x de-rate); OBBBA credit phase-out; an adverse/affordability-driven rate order; a data-center ESA slip/cancellation; multiple reversion from the 99.8th percentile. (INTERPRETATION.)

Risk of a catastrophic loss? Very low — regulated monopoly, IG-rated, diversified asset base. (INTERPRETATION.)

Chance of a total loss? Negligible. The realistic downside is a 15–25% multiple de-rating, not impairment. (INTERPRETATION.)

Recent News & Events

Has the business environment changed recently? Yes, materially — the 2024–2026 data-center demand inflection re-coded Alliant from a flat-load utility to a ~7%+ grower, driving a ~17% capital-plan increase to $13.4B and a re-rating to an all-time high. (FACT.)

Significant acquisitions? None. QTS relocated a ~900 MW project from Wisconsin to Iowa (a capex reallocation, not an acquisition). (FACT.)

Change in accounting policies? None material. (FACT.)

Recent changes — new markets, facilities, management? New generation (Bobcat 720 MW CT, solar, storage, 1,000 MW IPL wind pending), coal retirements (Lansing, Prairie Creek), leadership transition complete (Barton CEO, Larsen retired as Exec Chair May-2025), IPL S&P upgrade to A-, TD Cowen Hold initiation ($83). (FACT.)

Appendix B — Source Appendix

Alliant Energy Corporation (NASDAQ: LNT) — as of 2026-07-11

Primary sources first. Management commentary is treated as hypothesis and validated against filings and financials. Third-party aggregated data is labeled and reconciled to primary sources.

Primary — SEC Filings (EDGAR, CIK 0000352541; trailing 60-month corpus)

• Form 10-K, FY2025 (filed 2026-02-20, lnt-20251231.htm) — business/segment overview, rate-base tables, regulatory orders (IUC RPU-2023-0002; PSCW 2026/27), capex “Construction and Acquisition Expenditures” table, tax reconciliation, financing plans, risk factors, non-GAAP ongoing-EPS bridge.
• Forms 10-K, FY2021–FY2024 (filed 2022-02-18 through 2025-02-21) — multi-year trend, one-time-item history (IPL Lansing charge 2024).
• DEF 14A proxy statements, 2022–2026 (2026: filed 2026-03-31, lnt-20260330.htm) — executive compensation metrics, incentive design, leadership/board, CEO transition.
• Q4-2025 earnings release (8-K Ex-99.1, accession 0000352541-26-000005, filed 2026-02-19) — 2026 EPS guidance $3.36–$3.46, 2025 ongoing EPS $3.22, dividend, capital-plan detail.
• Forms 8-K (trailing 60 months, ~70 filings) — data-center ESA announcements, rate-order results, dividend declarations, leadership changes, financing.
• Forms 3/4/5 (179 insider filings) — insider-transaction read (1 open-market sale, 3 small buys in 5 years; balance routine grants/withholding).

Primary — Earnings Calls / Transcripts

• Q1-2026 earnings call (May 1, 2026) — 3.4 GW contracted load, 370 MW ESA, guidance reaffirmed, “Alliant Energy Advantage” framing (via ROIC.ai transcript tools).
• Q4-2025 / FY2025 earnings call (Feb 20, 2026) — $13.4B plan, 12% rate-base growth, 7%+ 2027–2029 EPS CAGR.

Primary — Regulatory

• Iowa Utilities Commission (IUC) — RPU-2023-0002 order (Sept 2024): 9.65% ROE, 51% equity, tiered advance-ratemaking premiums, 2025–2029 base-rate moratorium + earnings sharing; IPL 1,000 MW wind advance-ratemaking; Bobcat Energy Center approval.
• Public Service Commission of Wisconsin (PSCW) — Dec-2025 WPL order (2026/27 test years): 9.80% ROE, 54.5% equity; solar cost-overrun recovery; Meta/Beaver Dam individual customer rate (approved with modifications, May-2026).

Third-party — Quantitative (labeled; reconciled to filings)

• ROIC.ai MCP — income statement, balance sheet, cash flow, profitability/credit/per-share ratios, enterprise value, valuation multiples (FY2016–FY2025). Caveat: maps “Construction and acquisition expenditures” to “acquisitions of subsidiaries” — this is construction capex, not M&A; its “FCF” figure is unreliable as a result.
• Market price/valuation data — daily price/OHLCV history (adjusted + unadjusted, EMAs, beta) and own-history valuation percentile ranks (composite/P/E/P/B/P/S ~99.8th percentile at $76.40).
• Factor-model data (FactorsToday) — factor loadings (Utilities-sector beta ~0.88; AZI beta 0.19), leaderboard (y1 +26.5% / Sharpe 1.52; m6 +41.6% ann. / Sharpe 2.20; y1 max DD −7.0%), related-stocks (DTE, CMS, OGE, WEC, PPL).

Third-party — Qualitative / Market Context (labeled)

• TD Cowen — initiated LNT at Hold, $83 price target (~July 7–8, 2026). Market context only; not our target.
• RBC Capital Markets — Outperform (post-Q1’26).
• Company IR / press releases (alliantenergy.com) — Google Big Cedar (June-2025), QTS Cedar Rapids campus, capital-plan and dividend announcements.
• Trade press (Investing.com, StockTitan, GuruFocus, Motley Fool) — used only to corroborate dated facts; primary sources cited where load-bearing.

All price/valuation figures as of the 2026-07-10 close ($76.40) unless otherwise stated. No price target and no buy/sell recommendation appears in the body; the single opinion is the labeled author’s-view block.