Homer Bhullar
Vice President, Investor Relations and Finance at Valero Energy
Thanks, Lane. For the third quarter of 2024, net income attributable to Valero stockholders was $364 million or $1.14 per share compared to $2.6 billion or $7.49 per share for the third quarter of 2023.
The Refining segment reported $565 million of operating income for the third quarter of 2024 compared to $3.4 billion for the third quarter of 2023. Refining throughput volumes in the third quarter of 2024 averaged 2.9 million barrels per day or 90% throughput capacity utilization. Refining cash operating expenses are $4.73 per barrel in the third quarter of 2024.
Renewable Diesel segment operating income was $35 million for the third quarter of 2024 compared to $123 million for the third quarter of 2023. Renewable Diesel sales volumes averaged 3.5 million gallons per day in the third quarter of 2024, which was 552,000 gallons per day higher than the third quarter of 2023.
The Ethanol segment reported $153 million of operating income for the third quarter of 2024 compared to $197 million for the third quarter of 2023. Ethanol production volumes averaged 4.6 million gallons per day in the third quarter of 2024, which was 255,000 gallons per day higher than the third quarter of 2023.
For the third quarter of 2024, G&A expenses were $234 million, net interest expense was $141 million, depreciation and amortization expense was $685 [Phonetic] million and income tax expense was $96 million. The effective tax rate was 20%. Net cash provided by operating activities was $1.3 billion in the third quarter of 2024. Included in this amount was $166 million favorable change in working capital and $47 million of adjusted net cash provided by operating activities associated with the other joint venture member's share of DGD. Excluding these items, adjusted net cash provided by operating activities was $1.1 billion in the third quarter of 2024.
Regarding investing activities, we made $429 million of capital investments in the third quarter of 2024, of which $338 million was for sustaining the business, including costs for turnarounds, catalysts and regulatory compliance, and the balance was for growing the business. Excluding capital investments attributable to the other joint venture member's share of DGD and other variable interest entities, capital investments attributable to Valero were $394 million in the third quarter of 2024.
Moving to financing activities, we returned $907 million to our stockholders in the third quarter of 2024, of which $342 million was paid as dividends and $565 million was for the purchase of approximately 3.8 million shares of common stock, resulting in a payout ratio of 84% for the quarter. Year to date, we have returned $3.7 billion to our stockholders in the form of dividends and buybacks, resulting in a payout ratio of 81%, well above our long-term minimum commitment of 40% to 50%. In fact, since the start of 2021, our total cash flows from operations have exceeded our total uses of cash over this period, including capital investments, over $4 billion of debt reduction and over $18 billion returned to stockholders through dividends and share buybacks.
With respect to our balance sheet, we ended the quarter with $8.4 billion of total debt, $2.5 billion of finance lease obligations, and $5.2 billion of cash and cash equivalents. The debt to capitalization ratio, net of cash and cash equivalents, was 17% as of September 30, 2024, and we ended the quarter well capitalized with $5.3 billion of available liquidity, excluding cash.
Turning to guidance, we still expect capital investments attributable to Valero for 2024 to be approximately $2 billion, which includes expenditures for turnarounds, catalysts, regulatory compliance and joint venture investments. About $1.6 billion of that is allocated to sustaining the business and the balance to growth with approximately half of the growth capital towards our low-carbon fuels businesses and half towards refining projects.
For modeling our fourth quarter operations, we expect refining throughput volumes to fall within the following ranges. Gulf Coast at 1.83 million to 1.88 million barrels per day, mid-continent at 425,000 to 445,000 barrels per day, West Coast at 230,000 to 250,000 barrels per day and North Atlantic at 380,000 to 400,000 barrels per day. We expect refining cash operating expenses in the fourth quarter to be approximately $4.60 per barrel.
With respect to the Renewable Diesel segment, we still expect sales volumes to be approximately 1.2 billion gallons in 2024. Operating expenses in 2024 should be $0.45 per gallon, which includes $0.18 per gallon for non-cash costs such as depreciation and amortization.
Our Ethanol segment is expected to produce 4.7 million gallons per day in the fourth quarter. Operating expenses should average $0.37 per gallon, which includes $0.05 per gallon for non-cash costs such as depreciation and amortization. For the fourth quarter, net interest expense should be about $140 million and total depreciation and amortization expense should be approximately $690 million. For 2024, we expect G&A expenses to be approximately $975 million.
That concludes our opening remarks. Before we open the call to questions, please limit each turn in the Q&A to two questions. If you have more than two questions, please rejoin the queue as time permits to ensure other callers have time to ask their questions.