Core Viewpoint - Alliant Energy Corporation (LNT) is benefiting from investments in renewable energy and infrastructure upgrades, which support its expanding customer base and profitability [1][2][8] Group 1: Positive Factors - Alliant Energy's earnings prospects are bolstered by increasing electric and natural gas customer volumes, favorable geographic location, and regulatory developments that support wind project development [2] - The ongoing economic development in its service areas is driving demand for utility services, enhancing performance [2] - The company plans to invest $11.5 billion from 2025 to 2028 to strengthen its electric and gas distribution network and expand its renewable energy assets, raising its long-term capital expenditure guidance by 26% [3][8] Group 2: Investment Plans - Alliant Energy's investment strategy is expected to support an 11% compound annual growth rate (CAGR) in rate base from 2025 to 2028, with over 40% of capital expenditures focused on wind, solar, and energy storage [4][8] - These investments position Alliant Energy as having one of the cleanest generation asset portfolios in the country [4] Group 3: Challenges - The company's utility operations rely on third-party electric transmission systems, which could limit its ability to transmit electricity if those systems underperform [5] - Increased competition from self-generation by large industrial customers and alternative energy sources may reduce demand for Alliant Energy's services in Iowa and Wisconsin [6] Group 4: Stock Performance - Over the past month, Alliant Energy's shares have increased by 1.8%, outperforming the industry's growth of 1.3% [7]

Alliant Energy Corporation (LNT) reported first-quarter 2025 operating earnings of 83 cents per share, which beat the Zacks Consensus Estimate of 57 cents by 45.6%. The bottom line also rose 33.9% from the year-ago quarter’s figure of 62 cents.(See the Zacks Earnings Calendar to stay ahead of market-making news.)LNT’s RevenuesRevenues totaled $1.128 billion, which surpassed the Zacks Consensus Estimate of $1.126 billion by 0.17%. The top line increased 9.4% from the year-ago quarter’s figure of $1.031 billi ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Name of Registrant, State of Incorporation, Address of Principal Executive Offices, Telephone Number, Commission File Number, IRS Employer Identific ...

Alliant Energy (LNT) Q1 2025 Earnings Call May 09, 2025 10:00 AM ET Company Participants Susan Gille - Manager of Investor RelationsLisa Barton - Director, President & CEORobert Durian - EVP and CFOJames Schaefer - Senior Managing DirectorNicholas Campanella - DirectorPaul Fremont - Managing DirectorAndrew Weisel - DirectorPaul Zimbardo - Managing Director Conference Call Participants Rinny S - Equity Research Analyst Operator Thank you for holding, and welcome to Alliant Energy Energy's First Quarter twent ...

Alliant Energy (LNT) Q1 2025 Earnings Call May 09, 2025 10:00 AM ET Company Participants Susan Gille - Manager of Investor RelationsLisa Barton - Director, President & CEORobert Durian - EVP and CFOJames Kennedy - Vice PresidentNicholas Campanella - DirectorPaul Fremont - Managing DirectorAndrew Weisel - DirectorPaul Zimbardo - Managing Director Conference Call Participants Rinny Singh - Equity Research Analyst Operator Thank you for holding, and welcome to Alliant Energy Energy's First Quarter twenty twent ...

Financial Data and Key Metrics Changes - The company reported first quarter earnings of $0.83 per share, an increase from $0.62 per share in the same quarter of the previous year, reflecting a strong start to 2025 [17] - Earnings for the quarter accounted for more than 25% of the company's earnings guidance midpoint for 2025, reaffirming the guidance range of $3.15 to $3.25 per share [5][19] - The increase in earnings was driven by higher revenue requirements from capital investments, despite negative temperature impacts on electric and gas sales [17][18] Business Line Data and Key Metrics Changes - The company has secured energy supply agreements (ESAs) totaling 2.1 gigawatts of demand from three major data center developments, representing a greater than 30% increase in peak demand [8][9] - The capital expenditure (CapEx) plan has been updated to reflect a nearly 26% increase from 18 months ago, translating to a forecasted investment compound annual growth rate (CAGR) of nearly 11% from 2024 to 2028 [9][10] Market Data and Key Metrics Changes - The company is experiencing strong interest in economic development within its service areas in Iowa and Wisconsin, with ongoing efforts to support growth through new energy supply agreements [9][12] - The company has successfully sold existing capacity into the recent MISO capacity auction, which is expected to benefit customer bills [20][76] Company Strategy and Development Direction - The company is focused on an "all of the above" approach to new generation resources, including a mix of wind, batteries, and natural gas, to maintain a balanced energy resource mix [15] - The updated capital plan includes significant investments in natural gas generation to meet the growing demand from data centers, with a focus on enhancing reliability and affordability [10][72] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in achieving 2025 earnings objectives while advancing key strategic priorities, emphasizing the importance of supporting economic development [5][6] - The company is proactively managing risks related to potential changes in tax credits and tariffs, with a focus on maintaining a strong balance sheet and investment-grade credit ratings [24][52] Other Important Information - The company has completed nearly all planned safe harbor activities to preserve tax credits for future energy storage and renewable projects expected to be placed into service through 2028 [20] - The company is committed to ensuring that all individual customer rates achieve a win-win for existing customers, new customers, and shareholders [11] Q&A Session Summary Question: Timeline for converting mature opportunities to contracts and breakdown of serving those opportunities - Management indicated that they have high confidence in converting mature opportunities into contracts and are using existing resources to accelerate load growth [34][35] Question: Impact of safe harboring on the ability to go back for a rate case in Iowa - Management clarified that they are focused on activities to avoid the need to go back for a rate case and are advocating for beneficial legislative provisions [38][39] Question: Long-term EPS CAGR outlook - Management reaffirmed a long-term EPS CAGR of 5% to 7%, with current plans indicating potential for growth towards the top end of that range starting in 2027 [45][46] Question: Details on the CapEx increase - The increase in CapEx was primarily associated with natural gas generation to meet the peak demand from data center opportunities [72] Question: Impact of MISO capacity auction on consumer bills - Management stated that they are well positioned to utilize proceeds from the auction to help customer bills, contrasting with other entities that may face challenges [76] Question: Regulatory initiatives and filings in Iowa and Wisconsin - Management discussed ongoing regulatory filings for new generation resources and the potential for maintaining flat base rates through growth and cost reduction [60][61]

Core Insights - Alliant Energy reported quarterly earnings of $0.83 per share, exceeding the Zacks Consensus Estimate of $0.57 per share, and showing an increase from $0.62 per share a year ago, resulting in an earnings surprise of 45.61% [1] - The company generated revenues of $1.13 billion for the quarter ended March 2025, surpassing the Zacks Consensus Estimate by 0.17% and up from $1.03 billion year-over-year [2] - Alliant Energy's stock has increased approximately 4.5% since the beginning of the year, contrasting with a -4.3% decline in the S&P 500 [3] Earnings Outlook - The current consensus EPS estimate for the upcoming quarter is $0.58 on revenues of $1.02 billion, and for the current fiscal year, it is $3.22 on revenues of $4.29 billion [7] - The estimate revisions trend for Alliant Energy is mixed, leading to a Zacks Rank 3 (Hold), indicating expected performance in line with the market [6] Industry Context - The Utility - Electric Power industry is currently ranked in the top 22% of over 250 Zacks industries, suggesting a favorable outlook compared to lower-ranked industries [8] - Empirical research indicates a strong correlation between near-term stock movements and trends in earnings estimate revisions, which can be tracked by investors [5]

Q1 2025 Earnings Call Alliant Energy Corporation Cautionary Statements Forward-looking Statements The information regarding forecasted earnings per share, forecasted effective income tax rates, capital expenditure plans, financing plans and sources of funding, and regulatory plans contain forward-looking statements. Actual results could differ materially because the realization of those results is subject to many uncertainties, including: the state of the economy in the service territories of IPL and WPL; s ...

Exhibit 99.1 Alliant Energy Corporation Corporate Headquarters 4902 North Biltmore Lane Madison, WI 53718-2148 www.alliantenergy.com News Release FOR IMMEDIATE RELEASE Media Hotline: (608) 458-4040 Investor Relations: Susan Gille (608) 458-3956 ALLIANT ENERGY ANNOUNCES FIRST QUARTER 2025 RESULTS MADISON, Wis. - May 8, 2025 - Alliant Energy Corporation (NASDAQ: LNT) today announced U.S. generally accepted accounting principles (GAAP) consolidated unaudited earnings per share (EPS) for the three months ended ...

Core Viewpoint - Wall Street anticipates a year-over-year decline in earnings for Alliant Energy despite higher revenues, with a focus on how actual results compare to estimates impacting stock price [1][2]. Group 1: Earnings Expectations - Alliant Energy is expected to report quarterly earnings of $0.57 per share, reflecting an 8.1% decrease year-over-year [3]. - Revenue projections stand at $1.13 billion, indicating a 9.2% increase from the previous year [3]. Group 2: Estimate Revisions - The consensus EPS estimate has been revised down by 1.69% over the last 30 days, indicating a reassessment by analysts [4]. - A positive Earnings ESP of +9.88% suggests analysts have recently become more optimistic about Alliant Energy's earnings prospects [10][11]. Group 3: Earnings Surprise Prediction - The Zacks Earnings ESP model indicates that a positive reading is a strong predictor of an earnings beat, especially when combined with a Zacks Rank of 1, 2, or 3 [8]. - Alliant Energy's current Zacks Rank is 3, which, along with the positive Earnings ESP, suggests a likelihood of beating the consensus EPS estimate [11]. Group 4: Historical Performance - In the last reported quarter, Alliant Energy exceeded the expected earnings of $0.68 per share by delivering $0.70, resulting in a surprise of +2.94% [12]. - Over the past four quarters, the company has beaten consensus EPS estimates twice [13]. Group 5: Industry Context - NiSource, another player in the electric utility sector, is expected to report earnings of $0.90 per share, reflecting a 5.9% year-over-year increase, with revenues projected at $1.86 billion, up 8.9% [17]. - NiSource's consensus EPS estimate has been revised down by 4.2% over the last 30 days, and it currently has an Earnings ESP of 0.00%, making predictions about beating the consensus EPS estimate challenging [18].