Homer Bhullar
Vice President, Investor Relations & Finance at Valero Energy
Thanks Lane. For the fourth quarter of 2023, net income attributable to Valero stockholders was $1.2 billion or $3.55 per share, compared to $3.1 billion or $8.15 per share, for the fourth quarter of 2022. Fourth quarter 2022 adjusted net income attributable to Valero stockholders was $3.2 billion or $8.45 per share. For 2023, net income attributable to Valero stockholders was $8.8 billion, or $24.92 per share, compared to $11.5 billion, or $29.04 per share in 2022. 2023 adjusted net income attributable to Valero stockholders was $8.8 billion, or $24.90 per share, compared to $11.6 billion, or $29.16 per share in 2022.
The refining segment reported $1.6 billion of operating income for the fourth quarter of 2023, compared to $4.3 billion for the fourth quarter of 2022. Refining throughput volumes in the fourth quarter of 2023 averaged 3 million barrels per day. Throughput capacity utilization was 94% in the fourth quarter of 2023.
Refining cash operating expenses were $4.99 per barrel in the fourth quarter of 2023, higher than guidance of $4.60, primarily due to an environmental regulatory reserve adjustment in the West Coast.
Renewable diesel segment, operating income was $84 million for the fourth quarter of 2023 compared to $261 million for the fourth quarter of 2022. Renewable diesel sales volumes averaged 3.8 million gallons per day in the fourth quarter of 2023, which was 1.3 million gallons per day higher than the fourth quarter of 2022. The higher sales volumes in the fourth quarter of 2023 were due to the impact of additional volumes from the DGD Port Arthur plant, which started up in the fourth quarter of 2022.
Operating income was lower than the fourth quarter of 2022 due to lower renewable diesel margin in the fourth quarter of 2023.
The ethanol segment reported $190 million of operating income for the fourth quarter of 2023 compared to $7 million for the fourth quarter of 2022. Adjusted operating income was $205 million for the fourth quarter of 2023 compared to $69 million for the fourth quarter of 2022.
Ethanol production volumes averaged 4.5 million gallons per day in the fourth quarter of 2023, which was 448,000 gallons per day higher than the fourth quarter of 2022. Adjusted operating income was higher than the fourth quarter of 2022, primarily as a result of higher production volumes and lower corn prices in the fourth quarter of 2023.
For the fourth quarter of 2023, G&A expenses were $295 million and net interest expense was $149 million. G&A expenses were $998 million in 2023.
Depreciation and amortization expense was $690 million and income tax expense was $331 million for the fourth quarter of 2023. The effective tax rate was 22% for 2023. Net cash provided by operating activities was $1.2 billion in the fourth quarter of 2023. Included in this amount was a $631 million unfavorable impact from working capital and $65 million of adjusted net cash provided by operating activities associated with the other joint venture member share of DGD.
Excluding these items, adjusted net cash provided by operating activities was $1.8 billion in the fourth quarter of 2023. Net cash provided by operating activities in 2023 was $9.2 billion. Included in this amount was a $2.3 billion unfavorable impact from working capital and $512 million of adjusted net cash provided by operating activities associated with the other joint venture members share of DGD.
Excluding these items, adjusted net cash provided by operating activities in 2023 was $11 billion. Regarding investing activities, we made $540 million of capital investments in the fourth quarter of 2023, of which $460 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 members share of DGD, capital investments attributable to Valero were $506 million in the fourth quarter of 2023 and $1.8 billion for 2023.
Moving to financing activities, we returned $1.3 billion to our stockholders in the fourth quarter of 2023, of which $346 million was paid as dividends and $966 million was for the purchase of approximately 7.5 million shares of common stock, resulting in a payout ratio of 73% for the quarter. As Lane mentioned, this results in a payout ratio of 60% for the year.
Through share repurchases, we reduced our share count by approximately 11% in 2023 and by 19% since year end 2021.
With respect to our balance sheet, we ended the quarter with $9.2 billion of total debt, $2.3 billion of finance lease obligations and $5.4 billion of cash and cash equivalents.
The debt to capitalization ratio, net of cash and cash equivalents, was 18% as of December 31, 2023, and we ended the quarter well capitalized with $5.3 billion of available liquidity, excluding cash.
Turning to guidance, we 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 fuel businesses and half towards refining projects.
Our low carbon fuels growth capital is primarily for the SAF project. Our refining growth projects aim to increase our crude flexibility in the Gulf coast, extract more value out of some of our conversion unit capacity, improve our access to some key product markets, and improve our logistics into or out of our refineries. All of these projects meet or exceed our minimum return threshold of 25% after tax IRR.
For modeling our first quarter operations, we expect refining throughput volumes to fall within the following ranges. Gulf coast at 1.52 million to 1.57 million barrels per day, which includes turnaround work on the legacy Coker at our Port Arthur refinery. Midcontinent at 415,000 to 435,000 barrels per day, West Coast at 235,000 to 255,000 barrels per day and North Atlantic at 435,000 to 455,000 barrels per day.
We expect refining cash operating expenses in the first quarter to be approximately $5.10 per barrel, reflecting lower throughput due to turnaround activity across our system.
With respect to the renewable diesel segment, we 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 4.5 million gallons per day in the first 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 first quarter, net interest expense should be about $150 million and total depreciation and amortization expense should be approximately $700 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 adhere to our protocol of limiting 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.