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Operator
five months we've received orders, all repeat orders from existing platform customers for a total of 1,200 engines for fuel cell buses in Europe and North America. This is very, very exciting. We see a tripling of the existing operating fleet in these markets over the next two to three years. Now let's move to the third milestone, the announcement of a major order in the stationary market. We announced a multi-year supply agreement and the largest order in Ballard's history for the stationary market, an order for 150 engines totaling 15 megawatts of fuel cell systems from a UK-based customer specializing in renewable off-grid power generation. Again, this is a repeat order from an existing customer and reflects a scaling in their market opportunities. Our customer is targeting the replacement of traditional diesel generators with fuel cell systems that can provide resilient, predictable, clean, and quiet solutions for on-site power generation in a variety of applications, including EV charging, filming, events, and construction. The customer also has an option to purchase an additional 296 engines by March 2026. Finally, to turn to the fourth milestone, the announcement of our next manufacturing facilities. As context, as part of our local for local global manufacturing strategy, we conducted a comprehensive comparative analysis during 2023 of sequence production capacity expansion options in North America, Europe, and China. Based on our review, we determined to prioritize the US as our next market for production capacity expansion. We announced our plan to build a new manufacturing facility to be located on a parcel of 22 acres of industrial land within the Rockwall Technology Park in Rockwall, just outside of Dallas, Texas. The facility is expected to have an initial main plate production capacity of 8 million MEAs, 8 million bipolar plates, 20,000 fuel cell stacks, and 20,000 fuel cell engines per year, or the equivalent of 3 gigawatts of fuel cells. Dubbed Ballard Rockwall Giga One, we plan to manufacture next generation fuel cell products, incorporating the benefits of our work related to technology innovation and design changes, supply chain collaboration, and the introduction of volume production processes and advanced automation to drive down costs. We also recently announced two separate non-dilutive funding awards to Ballard, totaling up to $94 million. consisting of 40 million in expected grants from the US DOE hydrogen and fuel cell technologies office, and up to another $54 million in expected advanced energy project tax credits, known as 48C, funded under the Inflation Reduction Act. Our capacity expansion plan comes at the very time that platform customers are being clear about what they need from Ballard in the future. They're counting on us to be there for them at volume and at the right cost. The ability for us to demonstrate a clear roadmap to high production volumes at significantly reduced cost is critical to customers transitioning from demonstrations to future scaled deployments. With Ballard Rockwell Giga One, we plan to bring scaled advanced manufacturing of next generation fuel cells online in late 2027. At the same time, we expect to reach capacity constraints of our existing North American production facilities based on our forecasted growth and production volumes. We expect to make a final investment decision on this facility later in 2024, pending completion of certain customary conditions, including necessary approvals and definitive documentation, including with Rockwall and with the US funding sources. Accordingly, we will provide a detailed review of the plans of Ballard Rockwell Giga One during an earnings call later this year. We want to also provide two interesting updates on the rail market so far in 2024. First, one of our customers in the commuter rail market, Stadler, revealed that its FLIRT H2 train powered by Ballard fuel cell engines has been entered in the Guinness Book of World Records for the longest distance achieved by a pilot hydrogen fuel cell electric multiple unit passenger train without refueling or recharging, an impressive 1,742 miles. Second, and importantly, on April 16th, CSX unveiled its first fuel cell locomotive, developed through its partnership with CPKC, where CPKC provides CSX with a powertrain conversion kit using Ballard fuel cell engines to refurbish diesel locomotives. We view this as a very exciting development. We believe hydrogen fuel cells offer the only viable zero-emission powertrain solution to replace or refurbish diesel locomotives in North America. The total North American fleet is estimated to be around 40,000 locomotives, and notably, CPKC has approximately 2,500 diesel locomotives, and CSX has approximately 3,500 diesel locomotives. With high power line haul locomotives using 2.4 megawatts of fuel cells, which is equivalent amount of fuel cells required to power about 24 buses, We believe this represents a large and attractive addressable market for Ballard. Before I turn the call over to Paul to review our Q1 financial highlights, I'd like to provide a headline summary of Q1 and some commentary on our setup moving forward. In Q1, we booked $64.5 million in new orders, increased our order backlog by 38%, announced total non-doubting funding of up to $94 million for the planned build-out of a Rockwell Gigafactory, grew revenue by 9%, improved gross margin by 5 points, and reduced cash operating costs slightly, while continuing to invest in next-generation products and product cost reduction. Looking forward, in the context of an increasingly constructive policy environment, a growing order backlog, And with sustained investments in product cost reduction, advanced manufacturing capacity expansion, we see an exciting setup for the second half of 2024 and growth in 2025. We are well positioned to enable our customers to compete in the energy transition and the adoption of hydrogen fuel cells to decarbonize heavy-duty mobility and select stationary power applications. With that, I'll turn the call over to Paul to discuss our financials. Thanks, Randy.
Randy
In Q1, Ballard delivered $14.5 million in revenue, driven by strong growth in the bus and stationary verticals. Heavy-duty mode of applications accounted for approximately 84% of the total, and when added to stationary power, our fuel cell products as a whole represented approximately 88%, once again emphasizing our shift into a commercial products company. As a reminder, From previous years, we see that valid revenue is typically weighted approximately 30%, 70% between the first and second half of the year and heavily indexed to Q4. 2024 looks to be no different. Even with the continued shift in revenue mix to power products and the burden of fixed production overhead costs being spread over seasonally low revenue, gross margin of negative 37% showed a five-point improvement compared to Q1 2023. We are still anticipating underlying gross margins will break even in Q4 as revenue increases and product cost reduction activities have greater impact. We reported total operating expenses of $37.1 million and cash operating costs of $29.8 million, both relatively flat compared to the prior year comparables. Capital expenditures totaled $7.5 million in Q1. We are maintaining our guidance ranges for total operating expenses and capital expenditures for the year. Our guidance for 2024 includes capital for the initial design and scoping activities for the Rockwall Gigafactory, assuming FID. The expected U.S. government funding for the facility would impact our net capital expenditures in subsequent years starting in 2025. We ended the quarter with a strong balance sheet with cash and cash equivalents just over $720 million. With that, I'll turn the call over to the operator for questions.
Eric
Thank you. To join the question queue, you may press star, then one on your telephone keypad. You will hear a tone acknowledging your request. If you're using a speakerphone, please pick up your handset before pressing any keys. To withdraw your question, please press star, then two. We ask callers to kindly limit themselves to one question and one supplemental. The first question comes from Rob Brown with Lake Street Capital Markets. Please go ahead.
Rob Brown
Good morning. I just wanted to follow up on the Solaris order. Good scaling there. Are you... Could you give us a sense of sort of what the rollout schedule is and how, you know... how that market is developing and what the size of the market is and penetration rates you get to by the end of that contract.
Operator
Good morning, Rob. Thanks for the question. Maybe just to step back a little bit and just remind everyone, we're really seeing the employments of fuel cell electric bus scaling up both in Europe and North America, driven largely by this transition to zero-emission bus fleets and is supported by regulations and strong mandates and, of course, public funding. Just to give you a sense of kind of where we are right now, we at Ballard have about 158 fuel cell buses in operation that have Ballard engines inside in North America, and about 398 in Europe. In North America, I think we're probably right at 100% to 99% to 100% market share, and Europe over 80%. So we have really good visibility on what's happening in this market. And what you're seeing is that the proven operational advantages of fuel cell buses, including 500 kilometers or 350 miles of range, the ability to have that range consistent for every day and every season, and the rapid refueling time, kind of 6 to 12 minutes refill time, And then you add in the complexity that comes with depot electrification as you scale up. We're seeing a lot of operators really revisit their plans going forward. And so you see a growing number of cities committing to what I would characterize as a larger deployment. So Bologna, for example, 127 buses. Venice, 90 fuel cell buses. Cologne, 150. Santa Cruz, 57. You've got many other cities. in North America as well, Oakland, Philadelphia, Foothill in the LA basin area, Las Vegas, New York City, and Edmonton in Canada, all kind of committing to fuel cell bus deployment. So we see probably going from this situation where you have roughly 500 to 600 buses in North America and Europe combined today, to thousands literally in a three, four-year period. And so we're tracking a very healthy pipeline and with strong market share with most of the OEMs that are offering fuel cell buses in North America and Europe are powered by Ballard. So we feel very comfortable with our position in the market and the growth opportunity we see. With Solaris specifically, I don't want to comment on any one customer and their rollout schedule. We'll let them do that. But I would just indicate that we expect those 1,000 engines to be deployed between 2024 and 2027. Okay.
Rob Brown
Thanks for all the color there, Randy. On the Rockwell expansion or new facility, what's the CapEx requirements there, I guess, obviously impacted by the government funding side, but what's the CapEx expected on that facility?
Operator
Yeah. Great question, Rob. We're doing quite a bit of work in parallel right now. We're polishing our project scoping, final budget, timeline. There's a lot of work going on completing the facility design, the plant layout, looking at the permitting process and finalizing our land acquisition agreement and our EPC contract. There's still some more work on equipment specification procurement. So what we expect to do, Rob, probably on the Q2 or Q3 call, is actually provide a fairly comprehensive review of Rockwall once we get through FID and include a CapEx range at that point. We had kind of indicated, you know, if I were to put kind of parameters on right now, I would say in the $100 million to $150 million range, uh net of uh the funding is kind of the parameters and we'll tighten that up as we get out uh later in the year okay great thank you i'll turn it over great thanks rob the next question comes from aaron mcneil with dd cohen please go ahead good morning thanks for taking the time to answer questions randy
Rob
You highlighted the upfront incentives to build Rockwall. Obviously, that's great. That's been a step in the right direction. I can also appreciate that a larger update is forthcoming, but I guess I'm just wondering at a very high level, are there any production tax credits that you can take advantage of? And if the capacity is three gigawatts, do you have any early indications of what sort of sales volume you think you need out of the facility for it to break even and then you know, embedded in that to the extent that you can answer, what sort of unit cost reductions do you assume relative to where you are today?
Operator
Yeah, so we've canvassed the U.S. market fairly carefully in terms of incentives, and I, you know, we actually have other opportunities for this facility beyond the $94 million that we've commented on, and of course, there's a package of incentives that comes with the Rockwell Economic Development Corporation, so I think all in will likely be higher than 100 million in total support opportunities there, of course, all non-dilutive. So that's very powerful for us as we move forward. In terms of like kind of unit economics, volume scale, et cetera, to get the profit, I think we'll wait till the upcoming call to manage those. What I would say is just to be very clear, we don't have an order book at this time that satisfies the volume of three gigawatts that we're talking about, clearly. We are looking clearly at investing ahead of the adoption curve, but of course we have a sales pipeline that is showing very strong growth indicators across most of our vertical markets and of course both for Europe and for North America. As we look at our scaling over the next couple of years and basically using the production capacity, existing production capacity, and actually some capacity expansion that's ongoing here for bipolar plates in Burnaby, British Columbia. What we see is kind of meeting capacity constraints in that 2027 timeframe based on our sales pipeline and our forecasting for our financial model.
Rob
Makes sense. Happy to wait. You know, I know you don't want to get specific on customers and orders and pricing, but, you know, you've mentioned $1,000 per kilowatt in the past. For these big orders, like, is that still a good barometer or, you know, are you giving some discounts in exchange for volume?
Operator
Yeah, Aaron, I would say for lower volume orders, you know, You know, $1,000 is probably a good proxy. You know, most cases we're probably below that, but $1,000 is a good proxy. As you get to higher volume orders, we are seeing, of course, pricing compression there, as we should be. And so, you know, this is not – these type of contracts are not at that level.
Rob
Got it. Nope. Happy to turn it over there. Thanks, Randy. Great. Thanks, Eric.
Eric
The next question comes from Sonya Jain with UBS. Please go ahead.
Sonya Jain
Hey, how do you guys see Ballard playing out in the U.S. rail market and specifically down the line, and how are you seeing the truck market growth in 2024 as well?
Operator
Yeah, so just to clarify your question, I think you're asking about the truck market, is that correct?
Sonya Jain
Yeah, and the rail market for U.S.
Operator
Oh, and rail, okay, yeah. So just on the rail market, We'll start there first. I think one of the market opportunities that's probably not very well understood is the freight locomotive market. So you have both commuter rail in Europe, and I would characterize it as modestly in North America, but certainly Europe, a larger market opportunity there. As you know, North America, the volume of commuter rail traffic is much lighter than it is in Europe. But on the freight locomotive market, as I commented in the opening remarks, basically you've got a market with about 40,000 diesel locomotives. Those locomotives are refurbished or replaced every 15 years. So roughly speaking, you have about 2,600 locomotives per year. If you look at each locomotive, depending on the requirement for that locomotive, being up to 2.4 megawatts, let's assume it's about a megawatt and a half, on average per locomotive, you're talking about a couple billion dollar a year market opportunity just for that market in North America. So it's a very exciting market opportunity for Ballard. We have, I would say, a couple year period here over the next few years as customers like CPKC and we're very excited with the work that CSX is doing as well. As these type of companies continue to validate the use of hydrogen for locomotive applications, including their hydrogen storage tender solutions, I think this is the only pathway for decarbonizing. When you look at the emissions and the costs associated with diesel and the variability of diesel pricing, I think the number one scope one emissions is typically around 95% of scope one emissions for these operators is diesel fuel. So this is a real priority for these type of operators who are looking at the future to really look at decarbonization. Hydrogen is going to play a big, big role there. I don't think you're going to see kind of high volume in the next year or two. This is going to take a number of years to validate, but we are very well positioned with the solutions we have, with the partnerships that we have to play an important role in this market. On the commuter rail market, we have a number of partners there. Siemens that we've announced for the European commuter rail market. They obviously have an increasing presence in the North American commuter rail market too. And then Stadler is another customer for the North American and European market as well. So we see, I would say, growth in this market by 2030. I think we're going to see very clear validation both for the commuter rail market and for the locomotive market that puts it on a very strong pathway moving forward. For the truck market, this market is actually moving slower than I would like and there are a variety of reasons for that. We've been focused on what I call the truck market opportunities where you have return to base refueling. So think about things like drayage trucks and regional haul trucks that are coming back to the same base or yard at night. So you can avoid that distributed refueling infrastructure. And, you know, we see a number of applications in different weight ranges that will have, I think, hydrogen fuel cells as the primary solution. There will be some battery electric in some of these weight ranges as well. I think it's going to be a mixed solution. But it is taking longer, and I think the vehicle OEMs who have been investing quite a bit in different technologies, including autonomy, including battery electric, are now looking at the hydrogen fuel cell investments as well. So we see a number of opportunities that are in the, I would say, early stages of validation with these customers as they're going through their RFP and RFQ processes, and we're very active on this front. So we are seeing, I'd say, increased activity from truck OEMs, the large credible ones who are looking to bring solutions to market on the 2028 to 2030 timeframe. In parallel to that, we're working with a number of what I would call the upfitters. So entrepreneurial companies that see a market gap today and are rushing to market with, in many cases, both battery electric and fuel cell electric, depending on the use case, and are looking to Ballard to provide them with fuel cell engines. And so that, you know, upfitter market is a market that we're also working on. So we have, you know, two flows of traffic, if you will, two streams of opportunity in the truck market. We're advancing both of them, but it is taking longer than we'd like.
Sonya Jain
Got it. Thank you so much.
Eric
The next question comes from McRail with Cormark Securities. Please go ahead.
Mac
Hey, good morning. As you noted, Randy, strong six months for new orders. I'm wondering, what are your thoughts on the variability of that going forward? I mean, we've seen in the past when you get these big orders and it sort of draws some activity level from the next quarters. Do you think you're through that now with these big long-term sales agreements, or do you think we're going to see some where we should be sort of expecting maybe a little bit more soft on the new order side? What are your thoughts there?
Operator
Yeah, great question, Mac. What I would say is this is still very much an early stage demonstration market where some customers are earlier in their processes. But I do see that while there will be lumpiness in some of the market opportunities we're pursuing, like, for example, the backup power market for data centers, or the marine market, or even the rail market. You're looking at much larger size applications, power applications. And if you get scale orders there, it's quite different than the type of orders you'd see from the bus market. So I think we're going to continue to see a lot of variability and a lot of lumpiness. It will be based in some part on seasonality, in some part based on when funding sources are available. And of course, a couple of the contracts we've signed are long-term supply agreements with fixed volumes associated with them. So that doesn't happen every quarter. So there will be some variability, but I would see the trend is towards larger order books, and the trend is towards getting a smoother cadence of growth going forward. We do see a very strong sales pipeline. Expect to see some additional large orders through the year. So our job is to close those out.
Mac
And I guess related to that, as more evidence to support that, if you look at the 12-month backlog, it's actually kind of back to where it was in 2021 when you had, correct me if I'm wrong, a lot more technology-related sales in the 12-month order book. Is that correct?
Operator
Yeah, and I think that's one thing that's probably been misunderstood in some ways. You know, people kind of look at the revenue as being flat and as in some cases the order book is being flat, which has been true for a number of years. But the composition has changed dramatically. And so, you know, we're going to a situation now where we're reaching almost 90%, you know, revenue and similar on the order book front. And certainly on the sales pipeline, you know, it's heavily, heavily dominated revenue. by the sale of fuel cell engines now. So just as an illustrative example, last year we shipped over 500 fuel cell engines, a record year for Ballard on that front. In the first quarter, we shipped over 100, which is a record for Q1.
Mac
Okay, and just as a second question, just switching gears on the, you kind of addressed this a little bit on the Gigafactory in the US. When that's up and running, I know it's still a few years out, what is the contribution margin look like? In the past, you've spoken about contribution margin as opposed to the margins you're reporting. Is there any change in what you expect to see when that's up and running?
Operator
I'm not sure how you want to frame that. We will see a significant reduction in our costs as we move forward on manufacturing. When you look at the processes for MEA, the processes for bipolar plate production, those are the areas we're seeing significant cost reduction opportunity with automation and different processes that really help with things like yield and scrap rates, et cetera, that all go back to cost. So we will see a very significant difference in material costs, direct material and direct labor costs, as we scale in a high automated facility. And then as you move from contribution margin to gross margin, then it becomes a function of getting the volume and getting your fixed overhead absorption across a bigger book of business. So we're actually very excited about the opportunity for both contribution margin expansion and gross margin expansion, particularly as volume hits in that new facility. Okay.
Mac
Great, thanks. That's all my questions. Thank you.
Operator
Thanks, Max.
Eric
The next question comes from Rupert Murrier with National Bank. Please go ahead.
Rupert Murrier
Hi, good morning. Thanks for taking the question. I wanted to follow up on the cost reduction and pricing strategy. With the orders you've announced recently, are the prices you've offered for larger volumes out to 2027 representative of prices that are sustainable in the long run? Or to put that another way, are your prices getting to a level that could be competitive with diesel buses on a TCO basis?
Operator
Yeah, I think what we'll see is that as we move forward, we're going to see, and this happened very similarly in the solar industry and wind and happened in the battery electric market. There are some variability in those markets, particularly when depending on supply and demand balances, but also very high dependency in some cases on rare earth metals and certain commodities. I don't see that going forward here on the commodity front in terms of variability, but what I would say is we're going to expect to see selling price reduction on an annual basis, and our job is to make sure that our cost reduction exceed selling price erosion so that we're effectively seeing margin expansion. And so that's what we currently have in our plan, is we're assuming a certain percentage, it varies by year, but there's kind of an overall blinded percentage of cost reduction that customers are expecting. And certainly in the larger long-term supply agreements that we've been signing up recently, we have cost reduction and selling price, we have selling price assumptions reductions in there, and it's supported by cost reduction assumptions that we have in our plan.
Rupert Murrier
Great, thanks. And to follow up on that, you've talked about some of the advantages you're going to have with scaling up your bipolar plate and MEA. Of course, a big part of your cost is coming from balance of plant. Can you give us an update on the cost reductions you're seeing there and the commitments from your suppliers to bringing their costs down to where they need to be?
Operator
Yeah, great question. And, you know, I think it's worth knowing, too, like we're working now on our ninth generation of fuel cell engines. And, you know, we've learned a lot through eight generations, as you would expect, and including eight generations operating in the field. So we have a massive competitive advantage on this front. But what I would say is we kind of, you know, if you look at the ninth generation, we have more of what we characterize as an open architecture generation. And this has enabled us to integrate the DC-DC, but also reduce significantly the number of parts, reduce the volume and the weight, and improve the powertrain integration and ease of service, but also significantly reducing the manufacturing time or the assembly time. So this is all going to help reduce costs and improve the total cost of ownership for customers. What I would say is a balance of plant component is a very significant cost reduction initiative at Ballard. We have a fairly large balance of plant team that is working with the supply chain every day on making sure we're improving performance, reliability, availability and uptime, warranty terms, payment terms, but importantly, moving down costs. And we've seen step change cost reductions on a number of components. that will be coming into production in 2025. So we're pretty excited about some of the cost reductions we're seeing on the balance of plant components. And we look forward to kind of unveiling the ninth generation of product, including some of the, you know, metric improvements that we're seeing there.
Rupert Murrier
That's great. Thanks for the color.
Operator
Yeah, thanks, Rupert.
Eric
The next question comes from Jordan Levy with Truist Securities. Please go ahead.
Jordan Levy
Morning, all, and thanks for taking my questions. Maybe just to start on the stationary side, nice to see the work and some of the momentum there with your customer in Europe. Maybe if you could just talk to kind of the opportunity size over in that market nearer term and then how you see that progressing over the next couple of years.
Operator
Yeah, I would say so far we've been fairly constrained in our view on the market opportunity size for kind of the total TAM for the stationary power market. We characterize it kind of around $4 billion. I think that's dramatically understated. I think what's changed in the last year since we kind of assessed that $4 billion TAM market opportunity is really the data center market opportunity. And, you know, obviously there's a lot of publications out the last six months on the growth and the expected growth of the data center market. And the number one challenge the data center operators have, particularly the hyperscalers, is the access to green energy. And then I would say number two, importantly, is having the opportunity to get permitted quickly. And one of the challenges with permitting is to make sure that you have total clean energy solutions, and we're seeing a number of markets that are cracking down to make sure that backup power is also clean energy solutions. So we see a very significant market opportunity for data centers, and that's a market that I think is going to take that TAM significantly higher. So we have more work to do this year with a couple of key partners that are very large players in the data center market to kind of validate that TAM. But I would say, you know, there's going to be a market that we're going to see a lot of lumpiness, and we expect to see more opportunities in 2024. You know, obviously, we've announced this 15 megawatt opportunity orders. We expect to see more developments in this market in 2024 that will really set us up in 2025 and 2026 to make sure that we have the right partners and customers to really move forward in that market.
Jordan Levy
Appreciate that. And then as a follow-up, separate topic, recognize the solid benefits of 48C and maybe some of the other credits that you can realize from the Rockwall plan. But maybe just talk to how important you see finalized PTC guidance to the local market opportunity for that plan and maybe more broadly the investment case for Rockwall.
Operator
Yes. First of all, Rockwall is designed to provide us with product that we can use globally, frankly, but it's going to be used to provide products primarily for the North American and European market. And that will take us, in my opinion, likely through to at least 2030. So we have very good kind of capacity coming out of Rockwall and very cost effective and efficient products. additional incremental phasing if we wanted to scale that up in the future. In terms of the PTC, we have the guidance that was published in December. The whole industry has provided feedback. I personally have talked to the U.S. DOE recently about the volume of feedback they've received and the nature of the feedback. There's a lot of work going on there. with the IRS and the DOE looking at the feedback to kind of square the objectives of making sure that they have the right incentive mechanisms to support the growth they want while also trying to make sure that the hydrogen that is produced has the clean hydrogen attributes that the policy is targeting. There's a lot of debate around the regionality, the additionality, and the time matching. I think regardless of how this gets settled, there's really no major impact to us from the sales opportunities that we see through 2030 for Rockwall. Really, I think the cost and availability of hydrogen with the PTC, even in the constrained case where they take the most onerous or the most restrictive interpretation of the PTC still provides us with the cost of hydrogen that is significantly lower than it is today. I think with $3 per kilogram production tax credit for clean hydrogen, as that's defined, you're probably looking at around 50% of the cost of green hydrogen being subsidized. So for us, we view this as a really significant enabler to the market. Of course, we'd like to see the most, you know, flexible interpretation of PTC, but we'll see how that shapes up. We've submitted our response to the guidance and are waiting to see how that bakes out.
Jordan Levy
Super helpful. Thanks so much.
Operator
Great. Thank you.
Eric
The next question comes from CritShare with TUI Brothers. Please go ahead.
OpEx
Good morning. Thanks for taking the question. To start with, give or take, you're bleeding about $20 million cash a quarter in operating cash flow. And I understand you're saying that your gross margin will approach break-even by the fourth quarter on higher volume. But higher volume can have a working capital impact. And then you've already alluded to cyclical season, seasonal seasonality, like the first half next year might, might then return to lower volumes and negative margins. So just in terms of this 20 million cash burn from operating cashflow, do you have any, any trends, color expectations heading into the fourth quarter and first half next year about what we might anticipate?
Randy
Yeah, so thanks for the question. You know, it's something that we look at all the time is this is still a relatively immature market, you know, and the impact on our cash flows. And we look at different scenarios all the time. What we have to factor into that, though, is, you know, balancing what's in our sales pipeline and talking to customers, their expectations. They want a supplier that is going to be able to grow with them. as they deploy their various fleets and various applications. Also, our investments in products and to reduce our product costs, as we've talked about, not only decrease the unit costs, but increase the performance and quality and the investment in manufacturing to enable the scale benefits and growth. And you're balancing all of that against the cash on hand. And I think we've said in the past that we're looking at our funding and seeing all of these coming together and seeing that we're going to need funding, additional funding, probably in the 26, 27 timeframe. And so we're looking at various ways of doing that. We were very fortunate to announce the DOE grants and the investment tax credits. As Randy alluded to, there are other things that we're looking at as well, non-dilutive financing that is going to be helpful there. And we're also having a hard look at all of our activities across the business and where we're doing business in various locations and finding ways of redirecting spending or reducing overall spending of both OpEx and CapEx to kind of rationalize the product set and the rest of our costs. You saw in the Q1, as we said in Capital Markets Day, our costs were relatively flat. lower capex spending and operating costs that were relatively flat. And that's bumping up against a relatively higher inflationary environment as well. So we are looking very hard at all of our costs and focusing the company on where the market opportunities are. And we'll be able to, as we explore these other financing options, the particular emphasis on the non-dilutive ones, we'll bring out more information as those become more solid.
OpEx
Fair enough. Just on that first question to finish this point, I mean, you had a very strong fourth quarter and sales seasonally fell and you had a working capital benefit. Is it unreasonable to think that heading into a fourth quarter surge that there'd be a working capital drain?
Randy
Yes. Yeah, we would expect that. As sales come up, you know, our receivables and inventory is building throughout the year. Our receivables we'll be building, and then we'll see the receivable inflow in Q1 as we did this Q1. So we expect that pattern to continue. We are, though, also as part of, as we're looking at our cash flows and as we come up to scale, looking at all aspects of working capital, customer terms, inventory, reduction, inventory management, tighter on that, and payment terms with our suppliers as well. So all of it is a big focus of mine.
OpEx
Great.
Operator
And I want to go ahead. Sorry, Craig. I might just add to that. You know, when we kind of look at 2023 last year, we really implemented a number of activities, really sharpened the focus to make sure that we have this right balance of investing for the future, making sure we have competitive products, not just today, but five years from now and 10 years from now and at the right cost structure, et cetera. And so, you know, we rationalized the product portfolio last year. We reduced the number of active product development programs. We dropped corporate development investments and discontinued certain legacy non-core activities. So, you know, we're taking a very careful look to make sure that we are investing resolutely kind of on the long term but protecting the balance sheet.
OpEx
Okay. That's very helpful, and it feeds right into my second question, which also digs into the answer to Rupert's first question. And that related to this multi-year contracts and providing your customers lower pricing on an annual basis and planning to kind of leg into that with even more reductions on your internal costs. It feels like that is a challenging effort. I mean, very hard to predict with certainty the timelines for these things, when the market will scale. And if you have, you know, a growing order book with falling annual pricing, but the ultimate market scaling takes whatever, another 12 or 18 months for various reasons beyond anyone's control, that maybe I'm just, is that very challenging in your mind? Is there risk that if things turn dramatically different than anticipated for any macro reason, that you could suddenly find yourself leaving a lot more cash in 18 months than expected?
Operator
Yeah, so Craig, everything about the hydrogen fuel cell industry is challenging, right? This is not for the faint of heart. But what I would say is when we sign a long-term agreement and we're committing to future forward pricing, we have very high probability on what our costs are. We're not taking risk on that, right? So there is some development risk and there's some very modest volume risk, but not kind of what you're talking about. So I feel very confident, very confident that our cost reductions will exceed our selling price reductions based on the work that we're doing and based on the supply chain visibility. I don't view that, you know, there's lots of risks I think about at night. That's not one of them.
OpEx
Great. Good to hear. Thank you.
Eric
Our next question comes from Vikram Bagri, Sid City. Please go ahead.
Vikram Bagri
Hi there. A couple questions on gross margin. Could you just remind us if there are any impairments this quarter? And then just looking at the power products backlog, it looks like that picked up this quarter. How should we be thinking about that going forward? And how does that impact your outlook for the fourth quarter for that break-even target? Is that mix consistent with the next 12-month order book that you see?
Randy
So just on the gross margin question, so as we said, we've had a gross margin of minus 37%, which was a five-point improvement from Q1. And then looking underneath the gross margin, if we just talk about contribution margin, so price minus the direct labor and direct materials, it was broadly the same quarter to quarter. But both the products... Contribution margin as well as TS improved. So we are starting to see some expansion in the products as we become more of a commercial products company. But it was flat overall because the mix of products. We have more products with generally lower contribution margins than our technology solutions. So overall, it was flat. But underneath, the product contribution margin is expanding. I've been looking at our fixed and other costs, including the fixed overhead warranties and other provisions. That improved by about six points overall. And we had a net reduction in our warranty accruals as certain warranties expired. And that provided a net benefit. We also had a few other very small inventory right down in the quarter, but nothing like what we saw in Q4 of last year. So overall, you know, as we continue to invest in our products, we continue to expect to deliver product cost reductions. And when combined with the increasing sales volume and spreading that sales over a fixed cost, we expect to see gross margins improving over time.
Vikram Bagri
Got it. Okay, that's very helpful. And just one follow up. Last quarter, there was a customer that had impacted the backlog. I think their project was being delayed. Could you just talk about if there's any update there? Could we expect to see that customer reenter the backlog at some point? Just any update would be helpful. Thanks.
Operator
Yeah, we're staying very close to that situation, literally almost daily. So we have very good visibility on what's happening there. And they've made a lot of progress since December. And we're expecting them to get resolved likely in the next quarter, let's call it. But we'll wait to see that. And we'll see at that time what the impact is to the order backlog.
Vikram Bagri
Got it. Thank you.
Eric
This concludes the question and answer session. I would like to turn the conference back over to Randy McEwen for any closing remarks. Please go ahead.
Operator
Thank you for joining us today. Paul, Kate, and I look forward to speaking with you next quarter. Thank you.
Eric
This concludes the question and answer. This concludes today's conference call. You may disconnect your line. Thank you for participating and have a pleasant day.
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