Michael McMurray
Executive Vice President and Chief Financial Officer at LyondellBasell Industries
Thank you, Peter, and good morning everyone. Please turn to Slide 8 and let's take a look at the progress of our Value Enhancement Program. As Peter mentioned LYB's Value Enhancement Program far exceeded our initial expectations in 2023. When we launched the program, we thought we could achieve a 2023 year end run rate of $150 million of mid cycle recurring annual EBITDA improvement. With high engagement and rapid execution, our team achieved a run rate of more than $400 million by year end 2023. We have a strong management system in place for our VEP program. Our team has screened more than 13,000 ideas and more than 1,900 of these ideas have advanced to the execution ready stage of our process.
By the end of 2023, we executed on approximately 450 of these initiatives. Our system is robust and disciplined, and our internal and external auditors have validated our processes. We currently believe this effort will add a total of $600 million of recurring annual EBITDA by the end of 2024, and up to $1 billion by the end of 2025. This is a significant increase from our initial target of $750 million that we announced last March, driven by the enthusiastic bind of our colleagues and the tangible results that we have delivered so-far. The LYB Value Enhancement Program is providing meaningful contributions to our strategic financial goals and will continue to do so as we move forward.
On Slide 9, let me share more details about the progress on our VEP program during 2023. Our targets for the program are described as year end run rates relative to 2021 volumes and using average margins from 2017 to 2019, a time period that provides a good approximation of mid cycle margins. Through more than 450 initiatives, we generated over $300 million of VEP EBITDA from the program based on 2023 margins. This reflects the net recurring improvements throughout the year relative to 2021 volume, product mix and cost.
Now, let me highlight a few of the initiatives from last year. At our Lake Charles integrated polyethylene joint-venture, we automated controls for our water treatment unit that reduced manual operations and water consumption. With a small investment we were able to reduce LYB share of cost by $800,000 annually. And our oxyfuels business, our cost advantage U.S. production is exported in vessels to markets around the world. We worked with one of our terminal providers, to encourage their investment in a vapor recovery system that allowed LYB to double vessel loading rates, to reduce demurrage cost and vapor emissions for a net recurring benefit of $1 million per year.
By investing resources to learn more about the needs of our customers, our polymer product development team allocated resources for new products to serve demanding applications and wire and cable sheathing for subsea infrastructure markets. This initiative improved recording profitability by at least $300,000 per year. We hope these examples provide you with some insight into the hundreds of small initiatives that we have -- that we expect to add up to $1 billion of mid cycle recurring annual EBITDA to LYB's run rate by the end of 2025.
Please turn to Slide 10, and let me begin by highlighting the outstanding cash generation from our business portfolio during 2023. LYB generated a total of $4.9 billion of cash from operating activities over the past year. Cash-on-hand increased to $3.4 billion at the end of the fourth quarter. During 2023 we achieved cash conversion of 98%, well-above our long-term target of 80%. Our cash conversion was bolstered by working capital reduction of approximately $700 million during the fourth quarter. The majority of the working capital benefit was from lower receivables and inventories. We expect our working capital needs will increase during the first quarter. Our efficient cash generation allowed the Company to return more than $1.8 billion to LyondellBasell shareholders in 2023, this represents 53% of our $3.4 billion of free cash flow for the year.
Let's continue with Slide 11 and review the details of our capital allocation over the past year. As Peter mentioned, we are committed to disciplined capital allocation, as we execute our strategy and maintain our robust investment grade balance sheet. During 2023 cash from operating activities fully funded $1.6 billion in dividends, $210 million in share repurchases and our capital investment program. In May we increased our quarterly dividend by 5%, marking the 13th consecutive year of annual dividend growth.
This year, we invested $1.5 billion in capital expenditures. We reached an important milestone with the successful start up of our new PO/TBA asset in 2023. With the completion of this world-scale project, our future capital expenditures will be increasingly focused on a portfolio of smaller projects to advance our strategy. This includes investments in small profit generating projects, integrated hubs for circular solutions and hundreds of initiatives within the value enhancement program.
We ended the year with $3.4 billion of cash and short term investments and $7.6 billion of cash and available liquidity. In line with our strategic focus on leadership and sustainability, we issued our inaugural green bond for $500 million. LYB's robust balance sheet positions us well to move forward on our long-term strategy during the year ahead.
One last comment, we added over $1 billion of cash to our balance sheet in 2023, as a result of strong execution amid challenging market conditions. As a result, we are carrying about two times our stated minimum of $1.5 billion. We have built a bit more cash because of the challenging market conditions and uncertain economic outlook that we have been navigating. That said, our capital allocation priorities remain unchanged, and we remain committed to returning 70% of our free cash flow to shareholders over the long term.
Now, I would like to provide an overview of the quarterly results for each of our segments on Page 12. LYB's business portfolio delivered $910 million of EBITDA during the fourth quarter. Our lower results reflect a significant decline in gasoline crack spreads in seasonally lower demand during the fourth quarter. Lower gasoline crack spreads negatively impacted our refining results. Oxyfuels in the Intermediates and Derivatives segment and the value of co-product fuels in Olefins & Polyolefins Americas.
During the quarter, lower ethane and energy cost and increased polyethylene exports benefited our O&P Americas business. Overall Olefins & Polyolefins demand remain soft, particularly in Europe where utilization rates remained low. Lower demand and higher raw material costs negatively impacted our Advanced Polymer Solutions segment. Across the portfolio, a non cash LIFO inventory valuation charge decreased pre-tax fourth quarter results by approximately $55 million. As a reminder, the LIFO impact reflects changes in inventory valuation over the full year and it's not necessarily limited to fourth quarter valuations.
Before we discuss our segment results in detail, let me discuss our capital expenditure plans for 2024. We expect that our capex will be approximately $2.1 billion this year, a $600 million increase compared to 2023. Our capital plan includes approximately $800 million for profit generating growth projects, and $1.3 billion of sustaining investment to keep our assets running safely and reliably. The increased profit generating capital includes investments to grow our circular and low carbon solutions business, as well as investments to lower the carbon footprint of our existing asset-base, particularly in Europe. Funding required to drive our value enhancement program is included in our capex plan.
We expect our 2024 effective tax rate will be approximately 20% and our cash tax rate will be a few percentage points higher. In the appendix of the slide deck we have provided additional 2024 modeling information, including impacts from major plant maintenance, costs associated with the exit from our refining business and other useful financial metrics.
With that, I'll turn the call over to Ken. Ken?