Robert Durian
Executive Vice President and Chief Financial Officer at Alliant Energy
Thanks, Lisa. Good morning, everyone. Yesterday, we announced first quarter 2024 earnings of $0.62 per share compared to first quarter 2023 earnings of $0.65 per share. The quarter-over-quarter variances were mainly driven by the successful execution of WPL's customer-focused capital investment program, which supported new electric and gas rates that took effect on January 1st, and the higher financing and depreciation expenses associated with such capital investments. However, the quarter-over-quarter variances were also impacted by historically mild temperatures. Our service territory experienced the warmest first quarter on record for both Cedar Rapids and Madison since 2012.
Temperature impacts decreased Alliant Energy earnings by approximately $0.08 per share in the first quarter of 2024. In comparison, temperature impacts decreased Alliant Energy's earnings in the first quarter of 2023 by $0.04 per share. Temperature normalized electric sales to Wisconsin retail customers were relatively flat in the first quarter of 2024. In Iowa, residential sales were higher in the first quarter of 2024 when compared to last year. We continued to experience solid growth in the number of residential customers in both states. However, these positive drivers were offset by decreased electric sales to commercial and industrial customers in Iowa, largely due to lower sales to lower-margin, co-generation customers.
We continue to make progress with lowering operating expenses to achieve our financial objectives and support customer affordability. In fact, first quarter 2024 other operation and maintenance expenses were almost $15 million less than the first quarter of 2023. Through our diverse generation portfolio and execution of our robust fuel risk management programs, we are also keeping natural gas and electric energy costs in check. Our natural gas customers benefited from this trend as average retail builds in the first quarter of 2024 were approximately 25% lower than the first quarter of 2023.
Turning to cash flows. First quarter 2024 cash flows from operations increased by over $100 million when compared to last year. This increase was primarily due to the timing of WPL's fuel related cost recoveries and WPL's electric and gas rate increases, which were effective January 1st of this year. Looking forward, we expect continued improvement in our cash flow metrics as a result of the aforementioned drivers as well as increasing levels of tax credit monetization. We recently executed agreements on tax credit transfers that cover both 2024 and '25 credits expected to be generated at WPL and IPL.
We are also making progress in executing our $1.7 billion financing plans for 2024, largely to fund our investments in renewable and battery projects and support refinancing $800 million in debt maturities this year. To date, we have issued a $300 million green bond at WPL and refinanced our $300 million term-loan in Alliant Energy Finance. Later this quarter, we expect to receive approximately $120 million from the sales of partial interest in West Riverside. And this year, we expect to raise approximately $25 million in equity under our DRIP plan.
Finally, I will highlight our regulatory initiatives in progress as well as some regulatory filings we plan to initiate later this year. IPL's rate reviews continue to advance through their procedural schedules. As a reminder, we filed electric and gas rate reviews in Iowa last year. These rate reviews focus on recovery of customer-focused investments in Iowa that support building a more reliable, sustainable and resilient energy future, strengthening the energy grid as energy demand and extreme weather threats increase, and diversifying our generation resources.
Last month, interveners in IPL's electric and gas rate review proceeding filed their direct testimony. We were not surprised by the interveners comments as divergent viewpoints are a normal part of the process. We stand by the investments we have made on behalf of our customers and believe in the merits of the case that we put before the Iowa Utilities Board. We look forward to working with the interveners as the process continues.
On Slide 10, we have provided the procedural schedule to help monitor the progress of the rate review proceedings. Under Iowa statutes, rate reviews must generally be decided within 10 months after the filing. Therefore, we anticipate a decision in the third quarter of this year. We have requested new rates to be implemented effective October 1st.
Turning to Wisconsin, we have two pending proceedings in progress. We filed our annual Wisconsin fuel reconciliation for 2023 in the first quarter. At the conclusion of the fuel reconciliation process, we expect to refund over $30 million to our Wisconsin customers. And we requested authority to invest in reliability enhancements at a Riverside generating station. We are anticipating decisions from the PSCW on both of these dockets later this year.
Turning to our planned regulatory filings in 2024, we expect to make regulatory filings in both Iowa and Wisconsin later this year for additional renewables and dispatchable resources following our routine continuous modeling updates of our clean energy blueprints. We expect these projects will enhance reliability as well as further diversify and balance our energy resources to meet customer energy needs.
In closing, we are positioning for another year of consistent 5% to 7% growth in adjusted earnings per share. We are reaffirming our 2024 earnings guidance range of $2.99 to $3.13 per share. As a reminder, our guidance is based on constructive and timely outcomes of our regulatory proceedings, execution of cost controls and normal weather in our service territory for the remainder of the year. We will continue to manage our business to mitigate ongoing inflationary pressures, enable operational efficiency and deliver long-term consistency.
We very much appreciate the continued support of our company and look forward to meeting with many of you later this month. At this time, I'll turn the call-back over to the operator to facilitate the question-and-answer session.