Daniel S. Tucker
Executive Vice President and Chief Financial Officer at Southern
Thanks, Chris; and good afternoon, everyone. For the second quarter of 2023, our adjusted earnings were $0.79 per share, $0.04 higher than our estimate, and $0.28 lower than last year. The primary drivers of our performance compared to last year were milder-than-normal weather conditions, higher depreciation and amortization, and interest expense, and changes in rates and pricing, somewhat offset by lower income taxes and O&M expenses. A detailed reconciliation of our reported and adjusted results as compared to 2022 is included in today's release and earnings package.
Weather in our electric service territories during the first half of 2023 has been the mildest on record with the fewest aggregate degree days in the 129-year history of climate data reported by the National Oceanic and Atmospheric Administration, more commonly known as NOAA. The negative $0.16 per share EPS impact relative to our weather-normal EPS guidance range is our largest ever negative weather-driven variance for the first six months of a year, which is a significant headwind for the full year.
While 2022 was a year in which we were able to fix the roof while the sun is shining and position the Company well coming into 2023, we have been and will remain keenly focused on cost management, along with our constant focus on safety, reliability and customer satisfaction in the second half of this year. Our adjusted earnings estimate for the third quarter of 2023 is $1.30 per share.
Turning now to retail sales and the economy. Year-to-date 2023, weather-normal retail sales were in line with sales levels for the first half of 2022. We've seen positive residential and commercial growth, and strong commercial usage, offset by lower industrial sales. Year-to-date, we've added nearly 24,000 electric customers and 13,000 natural gas customers; trends, which continue to outpace pre-pandemic levels.
Chris, I'll now turn the call back over to you.