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 strong performance despite adverse temperature impacts on sales [19][20] - The earnings for the first quarter represented more than 25% of the company's earnings guidance midpoint for 2025, reaffirming the guidance range of $3.15 to $3.25 per share [6][21] - The capital expenditure plan for 2025 through 2028 has been updated to reflect a nearly 26% increase from 18 months ago, translating into a forecasted investment CAGR of nearly 11% [11][24] 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 [10][12] - Retail electric sales margins improved compared to the first quarter of the previous year, driven by customer growth and increased usage per meter across all customer classes [20] Market Data and Key Metrics Changes - The company is actively participating in the MISO capacity auction, selling excess capacity to benefit customer bills, positioning itself favorably compared to competitors [80] - The company is experiencing strong interest in economic development opportunities in its service areas, particularly in Iowa and Wisconsin [11][15] Company Strategy and Development Direction - The company is focused on supporting economic development and growth in its states, with a commitment to customer needs and sustainable investor returns [6][8] - The capital plan includes investments in new natural gas resources to complement renewable energy sources, ensuring a balanced energy resource mix [12][17] - The company is taking a proactive approach to manage risks related to potential changes in tax legislation, emphasizing the importance of tax credits for economic growth [16][25] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in achieving 2025 earnings objectives while advancing key strategic priorities, despite challenges in the macroeconomic environment [6][11] - The company is committed to maintaining a strong balance sheet and investment-grade credit ratings while navigating potential legislative changes [24][25] Other Important Information - The updated financing plan anticipates raising approximately $1.4 billion in new common equity through 2028, with flexibility in timing based on market conditions [74][76] - The company has completed nearly all planned safe harbor activities to preserve tax credits for future projects, significantly mitigating tariff exposure [22][25] Q&A Session Summary Question: Timeline for converting mature opportunities to contracts - Management indicated a high level of confidence in converting mature opportunities into contracts, with ongoing discussions and negotiations [35][36] Question: Impact of tax policy changes on rate case provisions - Management clarified that while there is a provision to revisit rate cases if significant legislative changes occur, the focus is on avoiding the need to do so through proactive growth strategies [40][42] 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 upper end of that range starting in 2027 [48][50] Question: Details on the CapEx increase - The increase in the capital expenditure plan was primarily driven by investments in natural gas generation to meet growing demand from data centers [76][77] Question: MISO capacity auction impact on consumer bills - Management noted that the company is well-positioned to leverage auction results to benefit customer bills, contrasting with competitors who may face challenges [80] Question: Regulatory filings for additional generation resources - Management provided insights into upcoming regulatory filings for new generation resources, emphasizing flexibility in their resource planning [67][69]

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].

Core Viewpoint - Alliant Energy (LNT) is set to release its first-quarter 2025 results on May 8, following a previous negative earnings surprise of 2.9% in the last quarter [1] Group 1: Factors Impacting Q1 Performance - The company placed two solar projects with a combined capacity of 200 megawatts (MW) into service during Q4 2024, along with the 50-MW Creston Solar Project, which is expected to power approximately 40,000 homes annually, likely boosting financial performance in Q1 [2] - An order from the IUC authorized annual base rate increases of $185 million for retail electric customers and $10 million for retail gas customers, effective from October 2024 through September 2025, which is expected to enhance revenue in the upcoming quarter [3] - Severe storms in March 2025 caused significant power outages and disruptions, potentially leading to higher operating expenses for restoration, which may offset some positive impacts on financial performance [4] Group 2: Q1 Expectations - The Zacks Consensus Estimate for earnings is 57 cents per share, reflecting a year-over-year decline of 8.1% [5] - The Zacks Consensus Estimate for revenues is $1.13 billion, indicating a year-over-year increase of 9.2% [5] - Total electricity delivered is estimated at 8,442.6 megawatt-hours (MWh), representing a 1.1% year-over-year increase [5] Group 3: Earnings Prediction - The company's Earnings ESP is +9.88%, suggesting a favorable outlook for an earnings beat this quarter [6] - Alliant Energy currently holds a Zacks Rank of 3, indicating a neutral outlook [7]

Core Insights - Alliant Energy (LNT) is positioned to potentially continue its earnings-beat streak in upcoming reports, particularly within the Zacks Utility - Electric Power industry [1] - The company has a history of beating earnings estimates, with an average surprise of 3.27% over the last two quarters [1] Earnings Performance - In the last reported quarter, Alliant Energy achieved earnings of $0.70 per share, surpassing the Zacks Consensus Estimate of $0.68 per share, resulting in a surprise of 2.94% [2] - In the previous quarter, the company reported earnings of $1.15 per share against an expected $1.11 per share, delivering a surprise of 3.60% [2] Earnings Estimates and Predictions - Estimates for Alliant Energy have been trending higher, influenced by its history of earnings surprises [5] - The stock currently has a positive Zacks Earnings ESP of +3.57%, indicating increased analyst optimism regarding its near-term earnings potential [8] - The combination of a positive Earnings ESP and a Zacks Rank 3 (Hold) suggests a strong possibility of another earnings beat [8] Statistical Insights - Research indicates that stocks with a positive Earnings ESP and a Zacks Rank of 3 or better have a nearly 70% chance of producing a positive surprise [6] - The Zacks Earnings ESP compares the Most Accurate Estimate to the Zacks Consensus Estimate, with the Most Accurate Estimate reflecting the latest analyst revisions [7]

Group 1 - The article discusses the impact of President Trump's potential tariff policies on market confidence, particularly regarding FirstEnergy Corporation (FE) [1] - The Low-Budget Dividend Investor is characterized as a Generation X individual seeking conservative, income-generating investment strategies [1] Group 2 - No relevant content available for this section [2][3]