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Operator
Good day, ladies and gentlemen. And welcome to your Capstone Green Energy earnings conference call and webcast for the financial results for the third quarter of fiscal year 2023 that ended on December 31, 2022. (Operator Instructions) As a reminder, today's program will be recorded.
At this time, it's my pleasure to turn the floor over to Mr. Don Ayers, Vice President of Technology. Sir, the floor is yours.
Don Ayers - VP of Technology
Thank you very much. Good afternoon, and thank you for joining today's fiscal 2023 third-quarter conference call. On the call with me today are Darren Jamison, Capstone Green Energy's President and Chief Executive Officer; and Scott Robinson, Interim Chief Financial Officer.
Today, Capstone Green Energy issued its earnings release for its fiscal 2023 third quarter ended December 31, 2022. We will be referring to slides that can be found on our website under the Investor Relations section during the call today. This conference call contains estimates and forward-looking statements representing the company's views as of today, February 13, 2023.
Capstone disclaims any obligations to update or revise these statements to reflect future events or circumstances. You should not place undue reliance on these forward-looking statements because they involve known and unknown risks, uncertainties, and other factors that are in some cases beyond our control. Please refer to the safe harbor provisions set forth on slide two of the slides accompanying this presentation in today's earnings release, and in Capstone's filings with the Securities and Exchange Commission for information concerning factors that could cause actual results to differ materially from those expressed or implied by such statements.
Please note that as Darren and Scott go through the discussion today, when they mention EBITDA, they are referring to adjusted EBITDA and the reconciliations in the earnings release and the appendix to the presentation slides.
I would like to now turn the call over to Darren Jamison, President and Chief Executive Officer.
Darren Jamison - President & CEO
Thank you Don, and good afternoon, everyone. Thank you for joining today for a review of our third quarter of fiscal 2023 results ending December 31, 2022. If you would now turn to slide 3.
I'd like to run through today's agenda. I will start with a brief business environment discussion and then update you on our strategic Energy-as-a-Service rental fleet growth. As a reminder, our Energy-as-a-Service or EaaS business remains the foundation upon which we are building a stronger Capstone. Next, Scott will provide more details on third quarter financial results. And then I will dive deeper into the electric charging --vehicle charging market, where we're seeing very exciting opportunities for us.
We'll then conclude with questions from our analysts. And I also want to remind you that there is an appendix of today's presentation providing more details and additional information on our products and the new IRA bill.
Bill, let's go ahead and jump to slide 5. Slide 5 shows our current business environment that we're in today. Third quarter revenue was off $1 million compared to the same period last year. But to date, revenue is up 9.5%. This revenue growth can be attributed to our energy as a service or EaaS business, which has grown approximately 18% and continues to outperform the rest of the business. As you know, the Energy-as-a-Service business, which is our FPP long-term service contracts, our spare parts and long-term rentals is our critical foundation.
And when I am happy to say the revenues are up 18% for the first nine months of fiscal 2023, mainly due to higher rental revenues of almost $4 million at [3.9] and an FPP maintenance contracts of approximately $900,000. In addition, we have navigated a very tough supply chain environment and we are expecting to see significant improvements in the area this year.
Looking ahead, I'm excited about what we've seen to start our fiscal fourth quarter and what to expect for the rest of calendar 2023. For the first nine months of fiscal 2023, gross margins expanded to 16% from 14% for the first nine months of fiscal 2022. However, I'll note that this was less than anticipated as ongoing supply chain expenses, freight costs and expediting charges continued to plague us more than we anticipated.
Now let's move on to slide 6. On slide 6, you can see that on December 31, 2022, there's about 40 megawatts of energy that service long-term rentals under contract and re-rental units under contract, which is a substantial increase from 17.7 megawatts on December 31, 2021, which represents a 126% increase year over year. I'm proud to say that we're still on schedule to meet the company's target of 50 megawatts under contract by March 31, 2023.
I'll now turn the call over to Scott, our interim CFO, to go through some of the specific financial results. Scott?
Scott Robinson - Interim CFO
Thank you, Darren, and good afternoon, everyone. I will now review in more detail our financial results for the third quarter of fiscal 2023.
Moving to slide 8, you can see our Q3'22 results compared to Q2'23. Financial results for the third quarter of fiscal 2023 had revenue of $19.6 million compared to $20.8 million in the second quarter of fiscal 2023. Product and accessory revenues were $10 million, down from $10.6 million in the second quarter of fiscal 2023.
Parts, services, and rental revenue, which includes our rental, STP long-term service contracts and distributor support subscription fees were $9.2 million, down from $10.2 million -- excuse me, $9.6 million, down from $10.2 million in the second quarter of fiscal 2023. And this was primarily due to a decrease in our spare parts revenue due to Russian sanctions. Gross margin as a percentage of revenue was 14% in Q3'23, up from 11% in Q2'23, primarily due to the easing of supply chain challenges.
Total operating expenses increased slightly to $2.6 million (sic - see Presentation "$6 million") from $5.7 million in the previous quarter. Net loss was $5.2 million for the quarter, compared to a net loss of $4.9 in the second quarter of fiscal 2023. Adjusted EBITDA was a negative-$1.7 million compared to adjusted EBITDA of a negative-$2.2 million in the second quarter of fiscal 2023.
Turning to slide 9, you will see the financial results for the third quarter of the fiscal year 2023, compared to the prior year period. Which were revenue at $19.6 million, compared to $20.6 million in the third quarter of fiscal 2022. Product & Accessory revenue was $10 million, down from $12.3 million last year. Parts, services, and rental revenue was $9.6 million, up from $8.3 million in the same period last year.
Gross margin as a percentage of revenue was 14%, up from 11% in the year ago period, primarily due to greater contribution from a higher margin rental business. Total operating expenses were stagnant at $6 million from $6 million in the year-ago period. The current year expenses include costs for investment banking and other fees relating to our debt refinancing activities. Net loss was $5.2 million for the three months ended December 31, compared to a net loss of $5.1 million in the prior period. Adjusted EBITDA was a loss of $1.7 million compared to adjusted EBITDA of a negative $3 million in the prior year period.
Slide 10 shows the year-to-date fiscal 2023 versus the year to date fiscal year 2022 financial results. Top line revenue increased from $53.9 million to $59 million due to growth in our energy as a service business. Gross margin increased from 14% to 16% due to contributions from the Energy-as-a-Service product line, offset by the direct material price increases previously mentioned.
Operating expenses decreased from $19.7 million to $17.2 million due to cost reduction efforts and adjusted EBITDA improved from $8.1 million loss to a $3.4 million loss.
Turning to slide 11, you will see selected balance sheet and cash flow items. Cash decreased to $16.6 million from $23.8 million at September 30, 2022, driven primarily by net loss funding, investments in our rental fleet, and purchase of long lead time inventory. Cash used in operating activities in the December quarter was $4.9 million compared to cash provided of $900,000 in the September quarter.
The variation was largely due to net loss funding and inventory purchases. Accounts receivable declined nearly from $19.3 million to $15.2 million as our DSO dropped from 85 days to 66 days during the quarter. This reduction was due to collection efforts and also benefited from offsetting certain accounts receivable accounts against the purchase price of rental units that were additions to our rental fleet.
Total inventory levels increased by $4.5 million due to the previously mentioned price increases from vendors and due to the necessity to purchase inventory in advance of forecasted demand due to continued shortages and other supply chain challenges. In addition, we do need more inventory as we ramp production of those new products and focus on growing the rental fleet to 50 megawatts by March 31.
I will turn it back over to you, Darren.
Darren Jamison - President & CEO
Thank you, Scott. As part of our quarterly update. Let's take a few minutes to remind investors our overall strategy and how we're working to achieve our profitability goals. Let's go ahead and turn to slide 13.
Slide 13 is the technology and markets we are now concentrating on, and are showing on the slide. I include this because I want to remind our investors of the various diversified industries and applications in which our solutions are currently being deployed. I won't go over every detail in each category, but I do want to draw your attention to smart microgrids, renewable energy, and especially EV charging, where we're seeing new demand for both stationary and portable EV charging solutions.
Let's go ahead and move on to slide 14. Slide 14 displays the projected revenues for the global EV infrastructure market. And our plan is to be there to take advantage of much of that market as we can, because market will generate opportunity for DERs and for smart microgrids. There is demand for EV charging solutions in both the United States and Europe right now, and we look forward to providing energy to customers who cannot readily get a charging solution for the local utility.
Slide 15 shows you a key new solution we are developing to meet the needs that we're starting to see from EV charging opportunities around the industry. This solution could substantially reduce stress on the grid, and the environment when coupled with intelligent EV charging solutions. Using natural gas, renewable natural gas, or renewable biogas to power the EV charging infrastructure.
This gives users the option to charge a bus or a truck fleet without the need for extra grid infrastructure, grid payments and enables fleet to electric vehicles and deploy them much quicker. Some key points are that it's scalable and transportable and avoid high utility demand fees. Furthermore, most places have access to natural gas pipelines or users can use a virtual natural gas pipeline, not to mention caps on EAS allows for the rental of these units. So the costly capital expenditures can be avoided.
Before turning it over for questions from our analysts, I want to leave you with some thoughts. Even though our bottom line was essentially unchanged, we're able to survive an extremely challenging supply chain climate. I am enthusiastic about what I've observed in the beginning of our fiscal fourth quarter and what I anticipate for the remainder of the calendar year 2023 as we look ahead.
We are still dealing with supply chain problems and rising prices, but I anticipate that our pricing hikes from January will start to balance this out. As input costs stabilize, we continue to anticipate the adjusted EBITDA results returned to more normal levels that we saw in Q1, hopefully in the fourth quarter and the first quarter and beyond.
We anticipate over the next 12 months, there will be a convergence of favorable developments, including our price hikes taking effect, implementation of the new Inflation Reduction Act, and the growth of new markets like EV charging. As we move away from being solely a manufacturing firm, our Energy-as-a-Service rental business will continue to be our main focus, and should deliver us benefits like profitability, predictable revenues and strong cash flows.
As we get closer to our target, 50 megawatts under contract, our results show that we have made progress since making the significant strategy shifts. The facts demonstrate that our customers need the solution and that we can deliver at meeting their needs and generating profits for our shareholders.
Now with that, I'd like to open the call up for questions from our analysts. Operator?
Operator
Certainly. At this time, we'll be conducting a question-and-answer session. (Operator Instructions) Rob Brown, Lake Street Capital Markets.
Rob Brown - Analyst
Hai Darren, hai Scott. Just wanted to talk a little bit about your confidence in your rental trajectory there to the 50 megawatts. How's the pipeline look at this point? And I think you've had some announcements recently that could you close, but just an update on how you get from the 40 megawatts at the end of the year to the 50 megawatts a year ago?
Darren Jamison - President & CEO
Yeah, it's a great question. We've got a 100 megawatt-plus pipeline of projects. Obviously, we're trying to fill a 10 megawatt gap between 40 megawatt and 50 megawatt. We're in negotiation with several projects right now, mostly in the US oil and gas space. I would expect that we'll be at 45 megawatts under contract by the end of this month. And then we'll only need to fill 5 megawatts between into February and into March.
So I'm highly confident on the trajectory that we're on, we should expect to see more press releases between now and into the quarter. I think it's -- definitely we've seen a softening I would say of the crypto market, but I would say oil and gas has more than made up for that. Most of the opportunity you're seeing right now are in the oil and gas space, especially since January.
Rob Brown - Analyst
Okay, great. And then have you seen any of the IRA-driven demand yet? I assume it's still coming, but if you haven't yet, how does that play out in the next few months?
Darren Jamison - President & CEO
Yes, we had great bookings in January. In fact, we actually booked more product sales in January than we did the entire third quarter, in one month. So I would say we're starting to see the leading indicator of some of those opportunities. I think that we've got to rerun numbers for customers and people need to get comfortable with the new bill. But I think it's going to be very significant. If you look at the US market, it is well more than half of our business. And the biggest piece of that has been CHP renewables. So that's definitely hitting our biggest market with a huge incentive.
So taking that IRA tax incentive from 10% to 40% is very significant. But again, I'd say oil and gas is very strong. I just got back from Europe. We're seeing actually oil and gas activity in Europe for the first time in years, as well as the US market also being strong. We've also got projects going on in Latin America, Australia and parts of Asia.
Rob Brown - Analyst
Great. And my last question is on the pricing that you took at the end of January. What's the magnitude of that? And does that happen pretty quickly? Or does that take time to roll out?
Darren Jamison - President & CEO
No, it definitely happens -- we implement it quickly and we update sales force. But there is a lag obviously, because we typically book products one quarter and ship them a couple of quarters later. So there's going to be a lag between new orders at higher pricing than when those go through our P&L. So January 31 was a new price increase. In the US market it was 10%, overseas it was more like 7%. Just because the IRA bill being US-influenced, and then obviously the dollar isn't fairly strong as well.
So fairly significant price increases even last year as well. We're still working on the other side of the equation, which is getting cost down from our vendors. We are seeing freight costs and freight shipping times come down nicely. We still got some work to do, though, on some of the other commodities. Especially printed circuit boards, IGBTs, fans, some high-grade wiring and things like that, the costs need to come back down. So it's -- I would say we are on the backside of the bell curve when it comes to supply chain issues, but we still have some work to do to get there.
Rob Brown - Analyst
Okay. Thank you. I'll turn it over.
Darren Jamison - President & CEO
Thanks, Rob. Great questions.
Operator
Thank you. Shawn Severson, Water Tower Research.
Shawn Severson - Analyst
Thank you. Just a couple of questions there. And I was wondering -- I wanted to follow up on Rob's question, a little bit about the pathway you're seeing from the IRA and how it's been showing up in the orders. I know you said you started a strong calendar year, but I'm trying to understand when I look at modeling the year, where do you see the bulk of this coming in and do we have any big surges that we would look for later in the year as this really starts to develop?
Darren Jamison - President & CEO
Yes, you definitely have to look at our normal project lifecycle, which for product sales where it's capital purchase, these projects can be 12 months to 18 months and in some cases even longer. So it's definitely a longer sales cycle, but we're seeing an uptick in inquiries, we're seeing projects move through, sales force at a better clip. And so I think we're starting to see the leading indicator of it, but it should really strengthen the summer into the fall. And that's exciting for us.
And so as Scott mentioned, we're trying to build inventory for what we see is a growing product sales pipeline, especially in the US this year, as well as trying to get to 50 megawatts. So we're pulling pretty hard on our supply chain. In defense of our supply chain, our purchases are up dramatically year over year, much more than our revenue because of the build on the EaaS side.
So definitely, I look though, for the back half of the year to be very strong. The first half of this year, we're really focused on getting good up 50 megawatts under contract and then getting all 50 megawatts deployed. I think that's another important point is that there is a lag between signing a rental contract and actually getting the product built, shipped, and commissioned, and that can be anywhere from 45 days to 60 days typically.
Shawn Severson - Analyst
So my last question is just, has there been any bias towards the types of customers that are responding to this and obviously the push towards the large global customers and national customers with the internal sales force specifically -- are you seeing any differences in appetite between the types of customers that are engaging on this? And then I'll step back in queue.
Darren Jamison - President & CEO
Shawn, it's an interesting question. I don't think we have enough data to make a statement. I mean, most of the folks we're talking to right now are people that had projects that didn't go forward because of paybacks being too long. So we're reaching back out to those folks. Those are people who are touched in the last couple of years, rerunning the economics. In general, the IRA bill drops the simple payback by two years. So it was a secure payback. It's not a four year payback or seven years nor five.
So we've got to reach out to those customers who run economics and see if we get them interested in moving forward in the project. And if they're not interested in the capital purchase or they're instead looking at an EaaS solution. I think it's also interesting, I just returned from Europe and they're pretty stunned by the IRA bill. I think it puts the US ahead of Europe as far as developing green energy and energy transformation, and I think that's a place that they're not used to being.
So I do think you're going to see more come out of Europe as they tried to catch up to the US, and hopefully trying to get ahead of the US. And so I think there's more opportunities there. And as I also mentioned, because of the war in Ukraine, we're seeing oil and gas activity pick back up in Europe as they realize they can't get all their natural gas from Russia and that the cost of other natural gas and supply is very challenging to find other locations. So interesting times in Europe and interesting times of the US. I think between the IRA bill and the impacts of the Ukraine war.
Operator
Thank you. Sameer Joshi, H.C. Wainwright.
Sameer Joshi - Analyst
Hey Darren and Scott. Thanks for taking my question. So just following up on the EaaS discussion -- you are on track to get to your target of 50 megawatts. Does the IRA and the increased incentives for upfront benefits change your strategy long term and -- are you increasing your targeted EaaS deployment next year, in the fiscal 2024 year?
Darren Jamison - President & CEO
So that's -- it's a great question. I think right now, we're really focused on getting to 50 megawatts. If you look at the numbers in the [queue], if we were just neutral on margins for our products, we'd be EBITDA-neutral for the year. So the negative gross margin on our products because of supply chain issues is dragged down our ability to be EBITDA-positive, adjusted EBITDA positive. If we get back to just zero gross margin or just slightly positive and we get to 50 megawatts deployed, we're solidly EBITDA positive.
And so that's really the short term growth and the short term goal, we need to really see cost of capital going forward. And so how we work on refinancing, Goldman and what that looks like, I think will drive what we do going forward beyond 50 megawatts. So I think when we talk again after the fourth quarter, I hope to have a solid plan in place to say we were already at 50 megawatts deployed, we're back into positive EBITDA territory like we were in Q1 of this year. And then hopefully have a rollout strategy and where we go next beyond the 50 megawatts.
But today, we're fairly focused on executing on that 50, and it is not insignificant. We think that is a business we started three years ago. And really had a trouble getting lift off because of COVID. This is accelerating very quickly and so deploying 50 megawatts, which is closer to 75 or 80 machines around the US and now moving internationally, that's a lot of activity to undertake for us in a short period of time.
Sameer Joshi - Analyst
Understood. Thanks for that. Moving to the EV initiative, are you -- well the first question is, what is the status of the development of the product? And is this development being done with certain customers in mind and target audiences in mind? Or are you independently developing and then present it to any potential customers?
Darren Jamison - President & CEO
No, we're working with one of the largest commercial REITs in the US, it is kind of our partner right now. They're providing the chargers, we're providing the microturbines. We've also generated -- you saw a picture in the presentation -- a portable version of that, it was 180 kilowatt charger with the C200 microturbine, got a little bit of a battery on board for back starting and some solar PV. But the goal is to be able to deploy these around the country as people bring in electric fleet. We're finding a lot of folks getting buses and trucks and then they turn to the utility and they can't get the additional utility feed and power that they need.
And so they often find themselves with a fleet brand new, but they can't charge it. And so we've got the opportunities here in California, we're doing stuff in New Jersey, we got stuff going on in Chicago right now. So they're big company, we're riding their coattail a little bit. They've obviously got a pretty big, indentured customer base as large as they are. So I think it's a good natural fit for us.
But it's early days. So we'll see how this expands. Obviously, portables great, we'd rather do more permanent infrastructure and I think as demand for EV charging increases and we electrify more buildings, the number of utilities that are unable to keep up with that demand is only going to grow and so I think that's a great opportunity for us. We'll look at the landscape as it adjusts and grows and figure out if we want to partner somebody or continue to just work with few key clients.
Sameer Joshi - Analyst
Understood. Should we expect the initial revenues during calendar year 2023 or 2024 from this?
Darren Jamison - President & CEO
Yes. Absolutely. We've got seven or eight megawatts out on rent right now. On trailers, we've got some permanent installations that we've quoted that we think will move forward here this quarter. We've done a couple of installations in Europe for permanent EV charging solutions. So yeah, this is something that's driving revenue, both for new product sales and through our EaaS business.
And I think the really exciting part is how this could grow over the next several years if electric vehicle infrastructure is not put in place and EVs continue to grow at the pace that they're projected to grow then this is going to be a huge opportunity for us.
Sameer Joshi - Analyst
Understood. Just a few on the parts revenues, which are slightly impacted by this Russian sanctions. Was that impact in like some million dollar range? Or was it like a couple of million dollars? How should we think of the scale of this impact?
Darren Jamison - President & CEO
Yes. Russia once upon a time was one of our biggest markets. We've got 2,500 microturbines over there. So the ability to not sell new product over there or struggle to get spare parts and make sure that we stay in line with all the US sanctions is definitely impacting us a few million dollars a quarter, if not more. I'd say some of the supply chain issues definitely impacted a couple of megawatts shipments last quarter, so it's a probably another couple of million dollars there as well. So those two things are definitely challenging for us.
On the supply chain side, we continue to meet with our various vendors. Unfortunately, when some vendors can't meet deliveries and others can, the imbalances in our inventories which we're seeing today, where we've got too much of one part, not enough of the other, and inability to hit our target production levels. So that will be a major focus for us, it has been the last quarter, it will continue to be a major focus for the next couple of quarters until we get our supply chain more balanced and our inventory turns back to 3.5, 4 -- where we want to see them -- compared to where we are today.
Very happy, though -- on the receivables side, we really focused on receivables coming out of COVID. As you recall, we were 65 days going into COVID, kind of DSO, we hit 156 days as a high during COVID, we're back down to 66 days today. So that's been a lot of work by the finance team and myself to clean up the receivables and work with the distributors name these customers to make that happen. So a good success story there. Now we need to focus on supply chain side and the balance sheet side and then continue to keep growing that Energy-as-a-Service business.
Sameer Joshi - Analyst
Got it. Thanks for taking my questions and good luck.
Darren Jamison - President & CEO
No, thank you.
Operator
Thank you. That concludes our Q&A session. I will now hand the conference back to Darren Jamison for closing remarks. Please go ahead.
Darren Jamison - President & CEO
Great. Well, thank you. Great questions by the analysts. You touched on a lot of the things I wanted to touch on. I think the most important thing for me to look at this quarter is that we're still hitting our target to be at 50 megawatts under contract on March 31. That's the most important thing, the most transformational thing we can do for our business. And so as we grow that energy as a service business we need to keep hitting those target dates, make sure we get that product deployed to make sure the fleet is running well so we get more repeat customers.
We are in process, as you know, of refinancing the Goldman note with Greenhill & Company. We do need to drive that to conclusion here in the next two or three months at least, and then figure out what we're doing for our long term capital needs to keep growing the Energy-as-a-Service business.
Inventory is a bit out of whack, as he said, and supply chain issues have been challenging like many manufacturers around the world, but that's not an excuse. We need to do a better job, and our vendors need to do a better job and hopefully the fourth quarter and the first quarter of this new year, we'll get that behind us as well. So be looking for more Energy-as-a-Service press releases and we look forward to talking to everybody soon at the conclusion of our fourth quarter. Thank you.
Operator
Thank you, everyone. This concludes today's event. You may disconnect at this time and have a wonderful day. Thank you for your participation.