John Chandler
Senior Vice President & Chief Financial Officer at Williams Companies
Thanks, Alan. First of all, just what an incredible quarter we had. At a very high-level summary, the quarter benefited from nice increases in profitability from our Northeast gathering systems, an uplift in revenues on our Transco pipeline from new projects that have been put into service over the last year, significant contributions from our upstream operations in the Wamsutter and the benefit of higher commodity prices in our West segment. The positives were offset somewhat by slightly higher operating expenses resulting from increased incentive compensation expenses, reflective of the strong performance that is unfolding for the year. And you can see that strong performance in our statistics on this page. In fact, once again, we saw improvements in all of our key financial metrics.
First, our adjusted EBITDA for the quarter was up $153 million or 12%, setting a new record, and we've seen a 10% increase in EBITDA year-to-date. We'll discuss EBITDA variances in more depth in a moment. Adjusted EPS for the quarter increased $0.07 a share or 26%. AFFO also grew significantly for the quarter, up $217 million or 25%. And AFFO, I'll remind you is essentially cash from operations including JV cash flows and excluding working capital fluctuations. If you put our year-to-date AFFO of $3 billion, up against capital investments year-to-date of $1.2 billion, and dividends year-to-date of $1.5 billion, you can see that we generated over $300 million of excess cash year-to-date. Included in those capital investments I just mentioned were $307 million of maintenance capital. Also, you can see our dividend coverage based on AFFO divided by dividend is a healthy 2.17x for the quarter. This strong cash generation and strong EBITDA for the quarter along with continued capital discipline has led to our exceeding our leverage metric goal where we currently set at 4.04x net debt to EBITDA. You'll see later in our guidance update in the deck that we've moved our guidance for the year from where we were at less than 4.2x for the year now to around 4x at year-end. So a really strong performance for the quarter and the year, and the fundamentals are set up for a good fourth quarter and a very good 2022.
So, now let's go to the next slide and dig in a little deeper into our EBITDA results for the quarter. Again, Williams performed very well, realizing $153 million or 12% higher EBITDA. Our upstream operations added $55 million to adjusted EBITDA this quarter. This is almost entirely from the Wamsutter upstream acreage. Production from the combined assets, mostly from Wamsutter, totaled 232 million CFEs a day for the quarter net to our ownership. Again, the Haynesville upstream acreage produces very little EBITDA, given it has only a small amount of existing PDP reserves. And therefore, it will take a little time before we see new production and therefore, EBITDA coming from those assets.
Our Transmission Gulf of Mexico assets produced results that were $8 million more than the same period last year. New transmission pipeline projects added $24 million in revenue versus the third quarter 2020 including the Southeastern Trails project that went into service in the fourth quarter of last year and a portion of the Leidy South project that also went into service in the fourth quarter of last year. And you can see this evidenced in the growth in our firm reserve capacity, which is up 4% from the third quarter of last year. Offsetting this somewhat was Gulf of Mexico revenues that were down due to incremental impacts from hurricane shut-ins during the quarter from Hurricane Ida in comparison to the hurricane impacts in the third quarter of last year. Just so you have a number there, the incremental impact this year was a negative $5 million versus the third quarter of last year on hurricane impacts.
In addition, the transportation revenue increases were offset somewhat by a slight increase in operating expenses mostly due to employee-related expenses, a large part of which can be attributed to higher incentive compensation accruals. The Northeast G&P segment continues to come on strong, contributing $46 million of additional EBITDA this quarter. Collectively, total Northeast gathering volumes grew 470 million a day or 5% this quarter versus the third quarter of 2020, while processing volumes grew 20%. The volume growth was predominantly at our joint ventures in the Bradford Supply Hub, where we benefited from a gathering system expansion on that system in late 2019; and at our Marcellus South supply basin where we benefited from more productive wells at larger pads.
And just to be clear, because we do not operate Blue Racer Midstream, those volumes are not included in the volume statistics I just quoted. As a result of these increased JV volumes, our EBITDA from equity method investments improved by $45 million, which also included the benefit of additional profits from Blue Racer Midstream, again, due to our additional ownership we acquired in mid-November of last year. Otherwise, in the Northeast, higher revenues from higher processing volumes were offset by higher expenses, again, with a significant portion of those expenses being related to higher incentive compensation accruals. If you go to the West, that segment improved by $48 million compared to prior year. $35 million of this increase is related to higher commodity margins due to higher natural gas and higher NGL prices. Otherwise, the remainder of the uplift in EBITDA comes from lower operating costs due to lower maintenance fees, and due to the absence of legal costs and small asset write-offs that occurred in the third quarter of last year. And revenues for the West were only up slightly compared to the same period last year.
Now there are a number of big items that go opposite directions and revenues that I'd like to point out. First of all, for example, remember that we lowered our gathering rates in the Haynesville this year in return for undeveloped upstream acreage from Chesapeake in the South Mansfield area in the Haynesville. The resulting gathering revenue decrease from this during this quarter was more than offset by rate increases in the Barnett and the Piceance where our gathering contracts allow us to participate in the upside when prices are higher. Also last year, our partner on Overland Pass Pipeline was paying us an efficiency fee to allow them to pull volume off of OPPL. Those deficiency fees do not exist this year. However, the absence of those fees are being offset by fees from higher gathering volumes otherwise. And to that point, overall gathering volumes in the West were up 1% with higher volumes in the Haynesville and the Piceance being offset somewhat by lower volumes in the Wamsutter and the Barnett.
And then finally, the Sequent segment produced near flat adjusted EBITDA for the quarter. Sequent traditionally makes a significant portion of it's profit in the first couple of quarters of the year in the heart of the winter season and, therefore, did not realize profit for the quarter. Sequent does have a significant portion of their transportation capacity hedged with basis swaps as well as our storage inventory hedge with NYMEX positions, which, of course, led to the large $277 million unrealized mark-to-market loss on those hedges this quarter as prices increased and as basis differentials widened in some markets. This, of course, means that the intrinsic value of our storage and transportation positions have gone up significantly as well. And again, you'll see a significant portion of that value realized in the first half of 2022.
So now let's go to the year-to-date results. Again, our year-to-date results showed a strong growth of $383 million or 10% in adjusted EBITDA. Many profitable things are happening across all of our segments. First, I'd point to Winter Storm Yuri, which added $55 million in profits to the West, and it contributed $22 million of incremental profits to our upstream results. In addition, our upstream operations otherwise have added an additional $83 million year-to-date, almost entirely from the Wamsutter properties. Our transmission in Gulf of Mexico assets are up $30 million or 2% better with the increases being driven largely by additional transmission revenues from new projects that have been put into service and incremental revenues from Gulf of Mexico assets, largely due to lower downtime this year versus last year. These positives were partially offset by lower revenues due to a Transco rate case decline following the rate case final settlement in mid-2020 related to just a few markets. And as a reminder, a majority of our transfer rates actually increased in 2019.
In addition, expenses are higher this year year-to-date due to higher incentive compensation expenses resulting again from our strong performance. The Northeast G&P is up $124 million for the year, almost entirely driven by profits from our JV investments, again, namely from the Bradford Supply Hub gathering systems and our Marcellus South gathering systems. In addition, we benefited from increased ownership in Blue Racer Midstream. In total, gathering volumes for the Northeast are up 8% over the third quarter of last year, while processing volumes are up 22%.
And then in the West, our West G&P is up $71 million, and this is on top of the $55 million that we earned from Winter storm Uri. The $71 million increase is driven by higher commodity margins, higher gathering rates in the Barnett and Piceance where we participate in the commodity upside and lower operating costs. These positives were offset somewhat by lower deferred revenue in the Barnett, Lower Haynesville gathering rates, which again, were exchanged for upstream acreage and lower Overland Pass Pipeline profits from lower actual volume shipped and the elimination of the deficiency payments that we were receiving in 2020. And while we did see a 4% gathering volume decline year-to-date in the West, that was mostly offset by minimum volume commitment payments.
Again, this is stacking up to be an incredible year for us. One other thing I do want to point out, we did pick up in some of the narratives from some of the analysts last night, the view that our operating costs increased. And we did ourselves a bit of a disservice by not providing more information on our other operating segment, where our E&P upstream operations reside. Actually, if you look on the face of our financial statements, our operating expenses went up $73 million, $12 million of that came from Sequent, who by the way, covered most of that with their profits. E&P went up $51 million on cost, but of course, they're making significant EBITDA. So they're covering that with their revenues. And then the rest is related to bonus expenses. So our expense is actually when you extract Sequent and E&P and the bonus costs are actually down otherwise. So we actually are not seeing a significant -- or seeing expense increases and in fact, the contrary to other than the bonus-related expenses. So, I thought I'd clear that.
I'll now turn the call back over to Alan to cover a number of key investor focus areas.
Alan?