John D. Porter
Senior Vice President, Chief Financial Officer at Williams Companies
All right. Thanks, Alan. Starting here on slide three, with a summary of our year-over-year financial performance, beginning with adjusted EBITDA, we saw about a 3% year-over-year increase, where once again, for the third quarter, in spite of low natural gas prices, our resilient business continue to grow even as producer customers continued significant temporary production reduction measures. And we also saw a greater hurricane impact for the third quarter of 2024 versus 2023.
As we see on the next slide, our adjusted EBITDA growth was driven by strong growth from our large scale natural gas transmission and storage businesses, including the favorable effects of our recent acquisitions, but also unfavorably impacted by asset sales. And of course, we don't include gains from asset sales and our adjusted performance metrics, adjusted EPS, adjusted EBITDA or available funds from operations, and we did have a $127 million gain in the third quarter of 2024 from the sale of our Aux Sable interest and about $130 million of gains last year on the sale of the Bayou Ethane system.
Year-to-date, our adjusted EBITDA is now up about 5%. And year-over-year, you see that adjusted EPS growth is lagging our adjusted EBITDA and AFFO growth and that delta is due primarily to a step-up in non-cash depreciation expense from our recent acquisitions. But again, looking to 2025, we would see the delta in growth rates close back up as the non-cash depreciation charge flattens back out.
For third quarter, available funds from operations AFFO growth was about 4.5% and 4% year-to-date but looking through 2025, we see a five year CAGR of 7%. Also, you see our 3Q dividend coverage based on AFFO was a very strong 2.22 times on a dividend that grew just over 6% over prior year and 2.33 times coverage year-to-date. And our debt to adjusted EBITDA was 3.75 times, in line with our expectations for 2024, before dropping back down in 2025, to the guidance of 3.6 times or better.
So before we move to the next slide and dig a little deeper into our adjusted EBITDA growth for the quarter, we'll provide an update to our financial guidance. We are pleased to increase the midpoint of our adjusted EBITDA, $125 million from the original guidance of $6.95 billion to now $7.075 billion, reflecting a new range of $7 billion to $7.15 billion.
Additionally, as we mentioned before on our prior calls this year, based on our improved 2024 adjusted EBITDA outlook and other changes, we see our key per share metrics, adjusted EPS and AFFO per share coming in at the high end of their ranges for 2024. So we've now shifted the 2024 guidance for those metrics to midpoint of $1.88 and $4.35, respectively and we see improvement in the leverage guidance from 3.85 times to 3.8 times.
Finally, we are reaffirming our 2025 financial guidance as originally issued, but we plan to provide an update when we release our full year 2024 results in February. So again, very pleased with the financial performance of the company for 2024 and our ability to raise guidance even though it looks like 2024 Henry Hub natural gas prices will likely be around 15% lower than the January 1 strip prices that we set our business plan on this year.
So let's turn to the next slide and take a little closer look at those third quarter results. Walking now from last year's $1.652 billion to this year's $1.7 billion, we start with our transmission in Gulf of Mexico businesses, which improved $76 million or just over 10%, due to the combined effects of a full quarter contribution from the Hartree Gulf Coast storage acquisition, which is delivering as expected, following a flawless integration effort, higher Transco revenues, including from the Regional Energy Access project.
Now in the Gulf of Mexico, we saw total hurricane related impacts of about $10 million unfavorable there, and segment growth was also unfavorably impacted about $9 million by last year's Bayou Ethane divestiture. The Northeast G&P business was flat versus last year and also basically flat in total against our original 2024 plan. We've seen volumetric underperformance in the dry gas systems with some offset from rate escalations on those same systems, and we've seen growth in our rich gas systems, which has also provided a strong favorable offset. The 3Q Northeast results also reflected the sale of our interest in Aux Sable on August 1, 2024.
Shifting now to the West, which increased $15 million, benefiting from the DJ transactions that we completed in the fourth quarter of 2023. Segment performance was also favorably impacted by higher NGL services results, including higher Overland Pass pipeline volumes were low natural gas prices have supported greater ethane recoveries.
Overall, West gathering volumes were lower as a result of those temporary producer reductions primarily in the dry gas Haynesville area. And then you see the $12 million lower marketing results, and those were in line with our business plan for the third quarter. Our upstream joint venture operations included in our Other segment were down about $23 million from last year, due primarily to lower realized prices.
So again, it was a third quarter that was in line with our business plan, proving once again our ability to grow our business in spite of a tough natural gas pricing environment, the impact of Gulf of Mexico storms and portfolio asset sale.
And with that, I'll turn it back to Alan.