Thank you, Meagan. Good morning, and I appreciate all of you for taking the time to join our third quarter 2023 earnings call. I am proud to deliver our third quarter results this morning, which was a very successful quarter for all facets of the business. We'll start this morning on Slide 5. I'll speak to this quarter's operational and financial performance in more detail in a moment, but notably, this quarter's adjusted EBITDA from ongoing operations of approximately $1.6 billion underscored Vistra's capability of achieving consistently strong earnings through its integrated business model, with excellent operational performance by each of our generation retail and commercial teams and a variety of pricing and weather environments. In the prior two quarters, we experienced average power prices clearing lower than our realized hedge prices, which highlighted the significant downside risk protection to our earnings at our comprehensive hedging strategy provides. This quarter that scenario held in the markets outside of ERCOT were milder weather kept prices lower. In these markets, we were able to capitalize on our dynamic position management of our hedged portfolio to capture significant earnings in our generation segment. We saw this paradigm flip in the ERCOT market and while we were significantly hedged, we did have some open length and the generation fleet's operating flexibility was optimized by our integrated teams to respond to higher market prices, while keeping the lights and much needed air conditioning on at competitive prices for our customers throughout the markets we serve. With each of our four strategic priorities, our aim is to challenge ourselves with high performance goals and then consistently deliver. To that end this quarter, you saw us continue to advance our other three strategic priorities as well, as we focus on a strong balance sheet, our capital return program and our energy transition goals. As of November 2, we've now returned over $3.785 billion of capital to our shareholders through share buybacks and our dividend program, since the capital allocation was first announced in November of 2021. After we close Energy Harbor acquisition and develop a long-range plan for the combined company, we will work with our Board on a new multi-year capital allocation plan and expect to disclose the specifics of that plan in the first half of 2024. In the meantime, we continue to opportunistically invest in renewables and energy storage growth, including our expectation that we will begin construction in spring of 2024 on our three largest solar and energy storage developments located at our former Illinois Coal plant sites while maintaining our sub-three times leverage ratio. I want to move now to slide 6 to discuss our third quarter operational performance. This past quarter, we saw unprecedented heat and ERCOT. It was the highest third quarter on record even beating the record-setting heat of 2011. Temperatures in Texas were six degrees above normal in August and early September frequently topping 105 degrees in Dallas and over 100 degrees in Houston and San Antonio. Cooling degree days were 23% above the 30-year normal for the June through September comparable time period and ERCOT set a new peak demand 10 different times this summer. On August 10, ERCOT experienced its all-time record peak load of over 85,000 megawatts. It was vital for our generation team to keep the plants running in these extreme conditions to ensure that people of Texas could continue to live and work in healthy and comfortable environment. In ERCOT, the solar generation ramp down hours of around 6 to 8 p.m., have proven to be a critical time period for the grid. It is still very hot during those times with strong customer energy demand but it is also the time period where we see solar start to ramp down and at times the wind may not make up the difference especially in August. The ERCOT grid is operationally complex having to predict the availability of not only dispatchable resources but also intermittent resources such as solar and wind, limited duration energy storage and demand response activities. As the generation mix of intermittent resources increases, ERCOT needs more reserves as a backstop to ensure there is adequate generation to cover demand and avoid emergency conditions. In these scenarios, you see flexible generation fleets like ours ramping to meet as much of this demand as possible. And that is exactly what we did, exceeding 97% commercial availability on average during those critical hours. During these tough weather seasons, our number one priority is ensuring our customers can consistently access competitively priced power to maintain their quality of life and keep the economy strong. That's where our retail business excelled. This summer's marketing campaigns featured several differentiated products tailored to our customers' needs, including a seasonal discount product that helps customers manage the size of their electricity bill through the higher usage summer months. Our customer-focused multi-brand and marketing channel strategy and responsive service, allowed us to grow our ERCOT residential customer counts over the prior quarter. In addition, our business market segment grew customer volume 16% year-over-year as strong margins. While the retail and generation teams stood ready to meet these demands for our customers and the people we serve, our commercial team optimized our financial position to create significant value for our shareholders. Specifically, in August, the ERCOT market saw average real-time pricing around $196 with 43 hours in August clearing over $1,000. And during those critical hours at 6:00 to 8:00 PM in August, we saw prices clear on average around $843. Leveraging customer usage insights and our generation fleets strong commercial availability, our commercial team optimized and managed our risk position to create significant value on our open positions. The commercial team further set us up for success in our markets outside of ERCOT where the weather was milder, strategically managing our positions and flexing our generation output to optimize our hedge positions and achieve strong results for the quarter. We see this trend of new peak demand records at ERCOT continuing for the foreseeable planning horizon, demand that we believe our retail products are designed to attract and our diverse and flexible generation fleet is uniquely positioned to serve. Moving now to slide 7. Again I am proud of the team's exceptional, tightly coordinated performance this quarter that helped Vistra achieve its $1.613 billion of ongoing operations adjusted EBITDA. Not only did the retail team grow residential customer accounts, TXU Energy maintained the PUC of Texas five-star rating, extending its streak to 12 straight months. Our ERCOT fleet delivered 2.5 terawatt hours more than any other quarter's output in at least the past 10 years, a 10% increase over the next highest quarterly generation output achieved in the third quarter of 2019. It was a notable feat that when paired with a strong performance by the commercial team to adapt to a variety of weather conditions created significant value across all of our markets. With the important summer months behind us and only two months left in the year, today we are raising and narrowing the guidance range we announced last quarter from $3.6 billion to $4 billion in adjusted EBITDA from ongoing operations to now $3.95 billion to $4.1 billion. We are similarly increasing and narrowing the range of adjusted free cash flow before growth from ongoing operations to a new range of $2.35 billion to $2.5 billion. Turning now to slide 8. We introduced 2024 guidance ranges for Vistra stand-alone without including any Energy Harbor contributions. We are forecasting adjusted EBITDA from ongoing operations in the range of $3.7 billion to $4.1 billion and adjusted free cash flow before growth from ongoing operations in the range of $1.9 billion to $2.3 billion. Notably our ongoing operations adjusted EBITDA midpoint for 2024 of $3.9 billion is higher than the midpoint opportunities we previewed on our most recent earnings call in the range of $3.7 billion to $3.8 billion. We are confident in our forecast as we expect consistent earnings from our retail business paired with expected strong performances from our reliable, diverse and flexible generation fleet that stands ready to deliver in a variety of economic and weather conditions just as it has this year. Of course, we will update our guidance ranges to include Energy Harbor performance expectations after we close the acquisition. Speaking of the Energy Harbor acquisition slide 9 provides an update on the status of the transaction. Since we last spoke, we have received approval from the NRC in September and we declared substantial compliance with the DOJ's second request on August 31st. We have responded to all requests from FERC and that process is progressing. Given our commitment to sell the Richland/Stryker generation plants, which we believe eliminates any potential remaining concerns around market competition, we continue to target a closing before the end of the year. Our team has worked with the Energy Harbor team to prepare for a smooth integration. And we are prepared to close the transaction promptly after receiving approval from FERC. As noted before, we intend to provide combined Vistra and Energy Harbor forecast and guidance information, after we close the acquisition. But as shown on slide 9, we continue to expect the Energy Harbor business to deliver an average of approximately $750 million of adjusted EBITDA in 2024 and 2025 including the impact of the hedges and synergies with that number growing to approximately $900 million when considered on an open basis. I'll now turn the call over to Kris, to discuss our quarterly performance in more detail.