Q2 2026 Stem Inc Earnings Call
Speaker #1: Greetings and welcome to the STEM, INC. second quarter 2026 results conference call. At this time, all participants are in a listen-only mode. A question-and-answer session will follow the formal presentation.
Speaker #1: If anyone should require operator assistance, please press *0 on your telephone keypad. As a reminder, this conference is being recorded. It is now my pleasure to introduce your host, Aaron Reed, Head of Investor Relations.
Speaker #1: Thank you. You may begin.
Speaker #2: Thank you, operator. Welcome to STEM, second quarter, 2026 earnings call. This is Aaron Reed, Head of Investor Relations. Before we begin, please note that some of the statements we will be making today are forward-looking.
Speaker #2: These statements involve risks and uncertainties that could cause our results to differ materially from those projected in these statements. For more information, we refer you to our latest 10-Q, 10-K, and other SEC filings and supplemental presentation, which can be found on the company's investor relations website.
Speaker #2: Our comments today also include non-GAAP financial measures. Additional details and reconciliations to the most directly comparable GAAP financial measures can be found in our second quarter, 2026 earnings release and supplemental materials.
Speaker #2: Which are available on our investor relations website. Arun Narayanan, CEO, and Brian Musfeldt, CFO, will start the call today with prepared remarks, and then we will conduct a question-and-answer session.
Speaker #2: And now, I'll turn the call over to Arun.
Speaker #3: Thank you, Aaron. Good afternoon, everyone. And thank you all for joining us today. On a Q1 call, I told you that we would demonstrate what our software-centric transformation was designed to deliver.
Speaker #3: Halfway through 2026, I am pleased to see evidence of this transformation in the results. The second quarter marked our fifth consecutive quarter of positive adjusted EBITDA. Our non-GAAP gross margin remains at record levels, and we saw meaningful commercial momentum across the PowerTrack platform.
Speaker #3: We made a new market entry in Latin America, received industry recognition for PowerTrack EMS, and continued the expansion of our product capabilities. Given this progress, we are reaffirming our full-year 2026 guidance today, which Brian will walk through in detail later in the call.
Speaker #3: Let me turn now to an update on our three key priorities for 2026. Our first priority is to drive operational leverage and ensure that the structural improvements we made in 2025 continue.
Speaker #3: We achieved record non-GAAP gross margins in the second quarter. As in Q1, this was driven by a revenue mix weighted meaningfully toward software services and edge hardware, with battery hardware resales remaining relatively low in the quarter, as expected.
Speaker #3: Because we have had minimal revenue from battery hardware year, we are trending above the high end of our guidance range for non-GAAP gross margin.
Speaker #3: We expect to track within the high end of our guidance range of 40% to 50%, as we see more battery hardware resale revenue during the second half of the year.
Speaker #3: On the operating expense side, we continue to manage costs with discipline and drive efficiency through the use of AI. Cash operating expenses remain sequentially flat and were down versus the second quarter of 2025.
Speaker #3: We are proving that these OPEX levels are sustainable. The improved gross margins and low operating expenses drove adjusted EBITDA of $6 million in the second quarter up 63 percent from the second quarter of 2025 and more than double that of the first quarter of 2026.
Speaker #3: For the first half of 2026, adjusted EBITDA was $8 million, compared to negative $1 million for the first half of 2025. This is clear evidence of the inflection point we've been building towards.
Speaker #3: Operating cash flow reached break-even this quarter at $0.3 million, a $9 million sequential improvement and a $22 million improvement versus the second quarter of 2025.
Speaker #3: Because we expect billings and revenue to continue to build throughout the second half of the year, we expect this metric to continue improving. Our second priority is strengthening the core PowerTrack platform.
Speaker #3: In the second quarter, we added approximately $0.8 gigawatts of solar assets under management, which in turn drove 3 percent sequential growth in power track ARR.
Speaker #3: During the second quarter, we also shipped a handful of product improvements, including an updated UX with dark mode, in-app feedback tools, and keyboard shortcuts.
Speaker #3: These are changes that our operators and asset managers value in their daily workflows and which set the stage for further product enhancements. Customer adoption of PowerTrack SAGE, our AI assistant within PowerTrack, remains strong, reflected in consistent day-to-day usage across a range of organizations.
Speaker #3: As we discussed last quarter, a key part of our platform investment strategy is a disciplined, build-or-buy approach. On the buy side, we continue to advance the integration of Racoon the automated fault detection and event management technology we acquired in April.
Speaker #3: That integration into power track is progressing well and our development and sales teams are now working through how best to package and release this new capability to customers.
Speaker #3: We expect to share a more substantive update during our third quarter call. A third and final strategic priority is building the foundation for accelerated growth in 2027 and beyond.
Speaker #3: That means expanding into utility-scale deployments advancing our international footprint and unlocking new market opportunities. Starting with utility-scale expansion, bookings grew nearly 15 percent sequentially in the quarter.
Speaker #3: We brought power track EMS to Latin America through the Grant Haas solar project in Chile where it was served as the primary control system for a 420-megawatt-hour battery storage system being added to an existing 135-megawatt solar facility.
Speaker #3: This is exactly the kind of hybrid utility-scale project that validates the commercial prospects of our EMS extend this delivery model across additional projects in Latin America.
Speaker #3: We added another new booking in Hungary, where SolarMarkt Group, along with EPC partner PannonWatt, selected PowerTrack EMS as the integrated energy management power plant control and SCADA platform for two 80-megawatt-hour battery systems being added to two existing 60-megawatt solar sites.
Speaker #3: There is a power track PPC already in place for these existing solar assets so this is another proof point for our growth ambitions around hybridization where we deepen our controls and software offerings over time as plants evolve.
Speaker #3: Commercial operation of the fully hybridized assets is expected in fall 2026. Altogether, PowerTrack EMS now has bookings across six countries and three continents.
Speaker #3: The first initial bookings have begun to come live and our everyday project in Germany announced in March is now live. Alongside this commercial progress, we also earned external recognition for the power track EMS product.
Speaker #3: I am proud to share that Power Track EMS won the Smarter E Award 2026 in the Smart Integrated Energy category, recognized by Solar Promotion International and Freiburg Management and Marketing International at the Smarter E Europe conference.
Speaker #3: The Smart Integrated Energy category specifically highlights technologies innovating and advancing the integration management and performance of clean energy systems. This is a meaningful external validation of the innovative platform that we have built.
Speaker #3: A co-marketing agreement and partnership with NuVation Energy also continues to build optionality around projects that require domestic control. We are working closely with NuVation's technical and sales team and in late July we co-presented at the IEEE Power and Energy Society general meeting in Montreal.
Speaker #3: Finally, on new market opportunities, we officially launched IONA, our AI services offering, in June. We are currently in conversations with potential customers and running workshops to help them identify where AI can have the greatest impact on their day-to-day operations, focusing first on our existing customer base.
Speaker #3: We will share a substantive update on IONA's customer traction as these engagements progress. We are also continuing to explore how our strength in energy optimization software and deep energy market expertise can support data center developers and operators.
Speaker #3: Development on this offering is ongoing. Two quarters into 2026, we are executing with discipline and delivering the results we committed to at the start of the year and I'm confident in our team's ability to keep building on this momentum.
Speaker #3: With that, I will turn the call over to Brian.
Speaker #2: Thanks, Ram, and good afternoon, everyone. Let's walk through the results. Total revenue for the second quarter was $34 million, down 12 percent year-over-year from $38 million.
Speaker #2: Nearly all of that decline came from lower battery hardware resale revenue which was $300,000 in the second quarter versus $5 million in the second quarter of 2025.
Speaker #2: Excluding battery hardware resales, revenue from software, services, and edge hardware was $33 million, up 1 percent versus the second quarter of 2025. Within that, the revenue mix shifted meaningfully.
Speaker #2: PowerTrack software revenue grew 11 percent year over year to $11 million, reflecting continued strengths in our core commercial and industrial solar monitoring business.
Speaker #2: Edge hardware grew 22 percent year over year to $15 million and project and professional services revenue was $2 million down 6 percent year over year.
Speaker #2: Managed service revenue was $6 million down 34 percent year over year against an unusually strong second quarter in 2025 where we brought roughly $100 megawatt-hours online in a single quarter.
Speaker #2: GAAP gross margin was 41 percent in the second quarter, compared to 33 percent in the second quarter of 2025. Non-GAAP gross margin reached a record 55 percent, up from 49 percent in the second quarter of 2025.
Speaker #2: Driven by the continued shift of our product mix toward higher margin software, services, and edge hardware, and less from lower margin battery hardware resale.
Speaker #2: Given the revenue mix in the first half, non-GAP gross margin has been tracking above our 40 to 50 percent guidance range. Because we expect more battery hardware resale revenue during the second half of the year, we expect the full-year margins to move back toward the upper end of that range.
Speaker #2: GAP operating expenses were down both year over year and sequentially. Cash operating expenses were sequentially flat and down 11 percent year over year as we continue to manage costs with discipline even as we invest deliberately in target growth areas.
Speaker #2: The second quarter of 2026 marked our fifth consecutive quarter of positive adjusted EBITDA at $6 million. Representing an 18 percent adjusted EBITDA margin, adjusted EBITDA was up 63 percent from $4 million in the second quarter of 2025.
Speaker #2: Operating cash flow was positive $300,000 in the second quarter compared to negative $21 million in the second quarter of 2025 and negative $8 million in the first quarter of 2026.
Speaker #2: Representing a sequential improvement of nearly $9 million from the first quarter of 2026. The improvement reflects the benefit of increased high-margin billings and revenue flowing through the business and we expect continued improvement through the balance of the year.
Speaker #2: We ended the second quarter with $38.4 million in cash and cash equivalents, up from $36.6 million at the end of the first quarter. We remained very focused on our capital structure.
Speaker #2: During the quarter, we opportunistically used our at-the-market, or ATM, equity sales program, raising approximately $6 million at an average stock price of roughly $9.75, for general corporate purposes.
Speaker #2: Now turning to our operating metrics. Bookings were $37 million in the second quarter, up 39 percent from $27 million in the first quarter of 2026, and up approximately 7 percent from $34 million in the second quarter of 2025.
Speaker #2: Contracted backlog was 27 million at the end of the second quarter up 18 percent from 23 million at the end of the first quarter.
Speaker #2: CAR was $69 million, up 3 percent from $67 million at the end of the first quarter. ARR increased 2 percent to $62.4 million from $61.2 million at the end of the first quarter.
Speaker #2: Within that, Power Track ARR grew 3 percent sequentially and 13 percent year over year to 42.8 million and managed services ARR was roughly flat sequentially at 19.6 million.
Speaker #2: Solar operating AUM grew 2 percent sequentially to 38.3 gigawatts, and storage operating AUM grew 6 percent sequentially to 1.8 gigawatt-hours, driven by PowerTrack EMS projects coming online.
Speaker #2: Now turning to guidance. As Arun mentioned, we are reaffirming our full-year 2026 guidance across all metrics. Total revenue of $140 to $190 million with software, services, and edge hardware expected in the range of $130 to $150 million.
Speaker #2: We provided guidance on battery hardware resales of up to $40 million, which we still anticipate to be weighted to the second half of the year, and we expect to trend toward the lower end of that range.
Speaker #2: We expect non-GAAP gross margin of 40% to 50%, with the range driven by timing and volume of battery hardware resales. Given that we expect to trend toward the lower end of the battery hardware resale revenue range, we expect to trend toward the higher end of our non-GAAP gross margin range.
Speaker #2: Adjusted EBITDA remains at 10 to 15 million and we are tracking toward the high end of the range. We expect operating cash flow of 0 to 10 million and year-end ARR of 65 to 70 million.
Speaker #2: And now, I will pass the call back over to Arun for closing remarks.
Speaker #3: Thank you, Brian. I'd like to leave you all with three key takeaways from this quarter. First, our operating leverage story continues to build: five straight quarters of positive adjusted EBITDA, a second consecutive quarter of record non-GAAP margins, and operating cash flow at break-even—all without pulling back on investment.
Speaker #3: This is the kind of durable structural improvement we told you we were building. Second, our core platform continues to strengthen. Power Track software revenue grew 11 percent year over year and we took disciplined steps to extend our platform capabilities and make Power Track a more complete solution for our customers.
Speaker #3: Third, we are making tangible progress on the growth initiatives that will carry us into 2027 and beyond. Power Track EMS is now booked across three continents.
Speaker #3: We entered a new region in Latin America with the COPEX Granja Solar project in Chile, alongside a new hybridization booking with Solar Marked Group in Hungary.
Speaker #3: And we earned industry recognition with the SmarterE award. Pathway through 2026 I'm very pleased with the progress we are making against our commitments. We set out at the beginning of the year.
Speaker #3: I want to thank our customers for their continued partnership, our team for their exceptional execution, and all of you for your support and engagement.
Speaker #3: With that, I will ask the operator to open the line for questions.
Speaker #1: Thank you. We will now be conducting a question-and-answer session. If you would like to ask a question, please press star one on your telephone keypad.
Speaker #1: A confirmation tone will indicate your line is in the question queue. You may press star two to remove yourself from the queue. For participants using speaker equipment, it may be necessary to pick up the handset before pressing the star keys.
Speaker #1: One moment, please, while we pull for questions. Our first question comes from the line of John Wyndham with UBS. Please proceed with your question.
Speaker #4: Hey, perfect. Thanks for taking the questions. Congratulations on the quarter. Maybe just a couple from me. First, the edge hardware seemed to have a really good quarter.
Speaker #4: I think both in terms of revenue, which was up, like, 22 percent year-on-year, as well as the gross margin. Just any comments on what's driving that?
Speaker #5: Hey, John. This is Arun. Good to hear from you. Yeah, look, we had a good quarter and as we grow into the utility scale space, this kind of shift in the mix is natural.
Speaker #5: To see these projects come as a configuration with a greater percentage of edge hardware deployment just because of the nature and the size of these projects.
Speaker #5: So I think that's consistent with how the revenue mix is shifting and our growth patterns.
Speaker #4: Kind of a bigger picture question. There have obviously been some policy changes announced, whether it be the FCC’s ruling on imported inverters or the Section 232 solar module tariff.
Speaker #4: Just any thoughts you have about potential impact and how you would mitigate any impact on solar projects in the United States due to policy changes?
Speaker #4: And thanks again for taking the questions.
Speaker #5: Yeah, thanks for that too. Listen, I think we are seeing first of all, our projects are spread across as we said in multiple countries, different continents.
Speaker #5: So, some of these policy changes are U.S. only. And the particular policy that you're raising, we've not seen any impact from that on our projects, be it within the CNI space or even in the utility scale space.
Speaker #5: We continue to navigate this space by staying on top of it and working with our customers and partners to deliver effective solutions for our customers.
Speaker #1: Thank you. Our next question comes from the line of Justin Claire with Roth Capital Partners. Please proceed with your question.
Speaker #6: Hey, good afternoon. Thanks for taking our questions here. I first wanted to just ask about the guidance. So when we look at the EBITDA generated in the first half, just over $8 million, and then the annual guidance range of $10 to $15 million...
Speaker #6: So it implies a modest step down in EBITDA in the second half versus the first half. So just wondering if you could speak to what might drive a decline or is that the right way to interpret it?
Speaker #6: And then, is there potential for you to maybe exceed the high end of the guidance here, given what you've delivered so far this year?
Speaker #6: Yeah, hey Justin. This is Brian. Thanks for the question. Yeah, I think if you look at the numbers, we did state that we think we're trending toward the higher end of that guidance.
Speaker #6: You're correct that we had a really strong first quarter—or second quarter, really—which brings our year-to-date to a little over $8 million. So, a bit over halfway there.
Speaker #6: Remember, we had a very low percentage of our revenue coming from battery hardware resale this quarter. Or this first half. So that will increase as a percentage of the revenue, which will bring our margins down a little bit more in line.
Speaker #6: It'll also put a little pressure on the EBITDA margins. So I think the answer there is we don't see any real weakness in that space.
Speaker #6: It's just a matter of timing and our battery hardware resale. Gotcha. Gotcha. Okay. And then kind of similar question just speaking about the gross margin.
Speaker #6: So it implies a decline in the back half relative to the first half. I'm assuming that's primarily mix-related—just a higher mix of battery resale in the second half.
Speaker #6: But wondering on the kind of software and services side, any notable changes you anticipate in margins as we move through Q3, Q4? Yeah, thanks, Justin.
Speaker #6: No, I think you're right. The reason we're saying it's going to pull back a little bit is, if you look at our slide 12 in our appendix of the supplement, you'll see battery hardware is expected to be around 10 to 11 percent margins.
Speaker #6: So when we bring that in, it just naturally lowers our margin percentage. And those deals are generally a little bit bigger in size, with that lower margin.
Speaker #6: So it'll help gross margin dollars, but it will bring down the margin percentage a little bit. As far as our other products, no, I think if you look at that slide, we expect to see that continued margin in PowerTrack running around 75 percent, and Edge hardware at 45 to 47 percent.
Speaker #6: So, nothing indicating that we should see a slip in any of those margins. Gotcha, okay, great. That's helpful. And then, just curious on the hybrid projects—you have the announcement today on the project in Hungary.
Speaker #6: I was wondering if you could just compare the economics of a traditional PowerTrack solar monitoring contract with a contract that includes a hybridization?
Speaker #6: Does this materially increase the ARR or the profitability per megawatt for you guys?
Speaker #5: I don't think we have disclosure at the contract level.
Speaker #3: Yeah, this is Aaron. I can take that question. So, when we have a hybrid deployment—for example, with the Hungary deal—you saw that was previously a PowerTrack PPC customer of ours.
Speaker #3: So, there is a software contract already in place, and as a hybridized, we're adding another software contract in place with PowerTrack EMS. So, yes, there are two sources of ARR there, but there are also the services and the edge hardware deployments on those sites.
Speaker #6: Got it. Okay. I appreciate it. Thank you.
Speaker #3: Absolutely. Thank you.
Speaker #1: Thank you. And we have reached the end of this portion of the question and answer session. I'll now like to turn the floor back to Ann Reed for the retail questions.
Speaker #3: Thank you, operator. We have a few questions here. First question is on guidance. Full-year 2026 revenue guidance is still at a fairly wide range, with two quarters left to go.
Speaker #3: What are the key swing factors that would move you toward the higher or the lower end of that range?
Speaker #6: Okay, this is Arun. I'm going to take the answer. Battery hardware retail revenue is the potential source of this swing. We are expecting it to come in at the lower end of our $40 million range.
Speaker #6: Software services and edge hardware revenue has a smaller range of $130 million to $150 million. The pace of deployments would determine how we swing within that range.
Speaker #6: And as we said before, we are on track and we remain within the range, and we are very pleased to reaffirm guidance across all metrics today.
Speaker #3: Thanks, Arun. The next question I have for you is on international expansion. Today in the call, we talked a lot about our new deal in Latin America with power track EMS and the one in Hungary.
Speaker #3: Is there a region you're most excited about beyond those, or one where you
Speaker #1: See that a next real opportunity opening up
Speaker #2: Again , this is Arun for me . If you just take a step back and you look at what we are saying in this quarter , the smarter EY award win and the feedback from customers in these recent transactions show that we have really built an innovative product that is really a key solution for our customers in this marketplace What's happening is that Powertrack EMS is becoming this solution for solar asset owners who are trying to add storage and hybridizing their their plants , as well as power track EMS is a really good compatible project product for those international deployments .
Speaker #2: So this is how we are ending up in this situation . We are seeing power track EMS entering into Latin America . And this quarter , this sets us up for expansion in Latin America with key markets like Chile and Colombia in our radar .
Speaker #2: And as we have also shown in the past few quarters, we can see that, using our office in Berlin, we are able to make expansion within the European market.
Speaker #2: So maybe the broader answer is this is a really fit for product . A solution that we built fit for market product solution that we built .
Speaker #2: And we want to be wherever our customers are .
Speaker #1: Great . Now looking into 2027 , as we look past 2026 , what's one of the things that you're most focused on getting right in 2027 to keep this momentum going ?
Speaker #2: We've we've reiterated many times in the earnings call that growth in 2027 is where we are focused on , and we're going to achieve this by continuing to focus on the utility scale market .
Speaker #2: This is both within the United States as well as internationally . The products that are in this in this solution are Powerpack , EMS , power track , SCADA , as well as the power track , PPC product .
Speaker #2: The examples we have listed today and in other recent press releases , show how our customers are configuring the . Configuring their solution with these different products and expanding into these markets successfully gives us the best opportunity for revenue growth .
Speaker #1: Great, thank you. My last question here is for Brian. A key metric investors are focused on is operating cash flow.
Speaker #1: What gives you the confidence in reaching positive operating cash flow for the full year of 2026 ?
Speaker #3: Yeah . Thanks . Yeah . If you remember , our first quarter is traditionally our lowest billing and revenue quarter . So we had a -8 million of negative or OCF in the first quarter , which was really , you know , driven by those low billings and a combination of some expected working capital outflows .
Speaker #3: You can see in the second quarter, there was already significant improvement in that space. We came in the quarter at about $0.3 million positive OCF, which was sequentially about a 9% improvement.
Speaker #3: So we do expect that trend to continue through the second half of the year as our buildings and our revenue continue to grow with our seasonality.
Speaker #3: So that's what gives us the confidence to reaffirm the guidance we've given for the year .
Speaker #1: Great . Thanks , Brian . This concludes the retail investor questions . I'll now turn the call back to Arun for closing . Closing remarks .
Speaker #2: I want to thank everyone for joining our second quarter earnings call, and we look forward to speaking with you next during our third quarter 2026 earnings call this fall.
Speaker #2: Thanks , everyone .
