Thanks, K.R. This past quarter, we continued to deliver strong operational and financial results. We are gaining momentum in delivering on our commitments. Let me begin with a few highlights. We had record first quarter revenue. Product and service revenue was up 39% to $234 million and total revenue increased 37% to $275 million both versus the first quarter last year. Our margins improved. First quarter non-GAAP gross margins were 21.2%, up 540 basis points versus the first quarter of 2022. We are seeing strong global demand for our Energy Server, especially in datacenters, we have achieved product cost reductions with unit cost down nearly 10% versus the first quarter 2022. We are taking actions to improve our service businesses' bottom line, we are reaffirming our 2023 framework for revenues and profitability. With those as highlights, let me provide some additional context to our performance. The value proposition for energy server and electrolyzer is robust. We are hearing from our customers that they need resilient available power that reduces their carbon intensity today, while providing optionality to move to on-site net zero solutions like hydrogen in the future. Our time-to-power value proposition is particularly meaningful for datacenter customers where their local utility is unable to support their power needs. We are seeing this need globally, especially in the edge markets that need high-quality resilient power to support the growth. As for our electrolyzer, we are engaged with large-scale project developers of hydrogen and green ammonia, as well as oil and gas companies, who clearly value our efficiency advantages in our manufacturing readiness. The commercial market remains robust with hydrogen incentives in the United States, Canada, South Korea, Japan and Europe accelerating project development. Many of these projects are confirming their offtake agreements and completing their front-end engineering design. As these projects reach their final investment decisions, we expect to make announcements on our technology deployments. We are investing in research and development to support our technology roadmap for electrolyzers hydrogen fuel cells and carbon capture while we drive down our costs. These investments include demonstrations to showcase our product's maturity, efficiency and resiliency. The 4-megawatt solid oxide electrolyzer demonstration we announced last week is one example of how we're validating the commercial readiness of our technology. In March, we received $311 million from SK ecoplant for roughly $13.5 million, redeemable, convertible preferred shares at a price of $23.05 per share. The price share, count and proceeds is consistent with the option SK ecoplant exercise in August. At SK ecoplant's request, we changed the shares delivered from Class A common to preferred shares to facilitate closure. We expect the shares to convert to Class A common by September 30, 2023. We ended the first quarter with $483 million in total cash. We are investing in our business to deliver on our commitment for profitable growth. Cash used in operating activities for the first quarter was $315 million, partially driven by near term working capital investments and inventory. Our time-to-power value proposition is impacting our working capital levels as we build, ship, permit and install and compress cycle times to meet our customers' power needs. We expect to recapture this cash over the coming quarters to generate positive cash flow from operations for the year. Inventory balances, net of changes in payables increased roughly $155 million in the first quarter. Consistent with prior years and driven by individual project plans, our acceptances are greater in the second half than the first half of the year. This year to minimize the impacts of a production ramp we budgeted a levelized build plan. This plan requires a temporary increase in inventories in the first half for the second half acceptances. We are already seeing the benefits of an optimized build plan through lower employee turnover, less expedited shipping costs and improved yields. These benefits coupled with increased automation, lower material costs and increase power output are driving down our product cost 10% versus the first quarter of last year. We are very pleased with our return to double-digit cost reductions and are confident we will achieve our 2023, 12% cost-down targets. We are taking actions in service that position this business for long-term profitability. Some of our actions such as the timing of replacement module shipments will accelerate service costs, but they are incorporated in our 2023 company guidance. Last year as we were capacity constrained we prioritized our power module shipments for revenue over service replacements, while it was the right economic trade it required some fueled units to operate longer, which lowered their electricity output in some locations. If delivered electricity is below our commitment, we are required to make a performance payments to the financial investor. With our increased capacity we are aggressively shipping replacement power modules to increase output. We recognize the full cost of the replacement module at shipment as these replacement modules come online power output will increase, thus reducing performance payments. Over the next few quarters, we will be incurring, both the cost of the replacement power modules and the performance payments. The performance payments should moderate as the power output increases. In addition, service business margins should improve as we continue to reduce our costs and grow revenues with the expanding installed base. Over the long-term, we are confident we will deliver a profitable service business. To meet localization commitments in South Korea, we've begun to move the final assembly of units to be delivered to SK ecoplant to our South Korea JV. This change will move title transfer and revenue recognition point from the U.S. port to post-completion of assembly in South Korea. As we implement this change, we will have minimum Korean acceptances in revenue in the first half of the year. This does not change our outlook for total year revenue but instead shifts most of our Korea revenue to the second half of the year. We are reaffirming our 2023 annual guidance for revenue, margins and cash flows. With our backlog and pipeline we remain confident that we will deliver at least $1.4 billion of annual revenue at our targeted 25% non-GAAP gross margins. At this annual revenue and gross margin profile for the year, we should achieve positive non-GAAP operating margins and cash flow from operations. For the second quarter 2023 based on likely acceptances, I would expect our revenue growth and margins to be similar to the first quarter as we continue to meet our customers' needs and invest in profitable growth. In summary, we had a strong operational quarter in our building momentum with increasing demand for abundant clean and resilient energy. As we move forward, we believe the company can build upon our mature solid oxide platform, strong record of accomplishments and our robust growth roadmap. There are multiple growth opportunities to leverage our platform to enable the energy transition. We are extremely excited about our future. I look forward to showcasing the team at our Investor Conference on May 23 at the New York Stock Exchange. With that, operator, please open the line for questions.