Stem Announces Third Quarter 2025 Results

Increased revenue by 31% YoY to $38 million

Executed second consecutive quarter of positive adjusted EBITDA

Increased ARR by 3% QoQ and 17% YoY to $60 million, evidencing continued software-focused strategy execution

Achieved third consecutive quarter of strong gross margins

Refining and de-risking full-year 2025 financial and operating guidance

HOUSTON–(BUSINESS WIRE)–Stem, Inc. (“Stem,” “we” or the “Company”) (NYSE: STEM), a global leader reimagining technology to support the energy transition, announced today its financial results for the quarter ended Sept. 30, 2025.

Financial Highlights

• Revenue of $38.2 million, up 31% from $29.3 million in 3Q24
• GAAP gross profit of $13.5 million, up from $6.2 million in 3Q24
• Non-GAAP gross profit of $17.9 million, up from $16.2 million in 3Q24
• GAAP gross margin of 35%, up from 21% in 3Q24
• Non-GAAP gross margin of 47%, up from 46% in 3Q24
• Net loss of $23.8 million versus net loss of $148.3 million in 3Q24
• Adjusted EBITDA of $2.0 million versus $(3.5) million in 3Q24
• Operating cash flow of $11.4 million versus $(9.4) million in 3Q24
• Ended 3Q25 with $43.1 million in cash and cash equivalents versus $40.8 million in 2Q25

Operating Highlights

• Bookings of $30.3 million versus $34.3 million in 2Q25
• Contracted backlog of $22.2 million versus $26.8 million in 2Q25
• Storage operating assets under management (“AUM”) of 1.8 gigawatt hours (“GWh”), up 6% sequentially
• Solar operating AUM of 33.9 gigawatts (“GW”) up 4% sequentially
• Contracted annual recurring revenue (“CARR”) of $70.1 million, nearly flat from the end of 2Q25
• Annual recurring revenue (“ARR”) of $60.2 million, up 3% sequentially

“We delivered solid revenue growth and the second consecutive quarter of positive adjusted EBITDA in the third quarter of 2025,” said Arun Narayanan, CEO of Stem. “It has been one year since our strategic transformation was announced, and our results demonstrate the strength of our software-centric approach. With ARR growing 17% year-over-year and strong operating leverage evidenced by our gross margin performance, we are refining our guidance ranges across nearly all metrics. We have reduced the historical volatility in our business, we have de-risked the low end of nearly all guidance ranges, and we feel confident about the stability of our business. Our diversified AI-driven platform continues to capitalize on rising energy demand while our operational discipline positions us well to drive towards profitable growth.”

“The third quarter of 2025 demonstrated our continued financial discipline with expanding gross margins and positive adjusted EBITDA,” said Brian Musfeldt, CFO of Stem. “We believe our improvement in operating cash flow generation and stabilization of cash reflect the underlying quality and sustainability of our business model. The strategic focus on software and recurring revenue streams is resulting in improved performance and allowing us to refine our guidance across nearly all metrics.”

Key Financial Results and Operating Metrics ($ in millions, unless otherwise noted)
	Three Months Ended September 30,								Nine Months Ended September 30,
	2025				2024				2025				2024
Key Financial Results(1)
Revenue	$	38.2			$	29.3			$	109.1			$	88.8
GAAP Gross Profit (Loss)	$	13.5			$	6.2			$	36.8			$	(8.6	)
GAAP Gross Margin (%)		35	%			21	%			34	%			(10	)%
Non-GAAP Gross Profit*	$	17.9			$	16.2			$	51.4			$	43.5
Non-GAAP Gross Margin (%)*		47	%			46	%			47	%			34	%
Net Income (Loss)	$	(23.8	)		$	(148.3	)		$	153.7			$	(802.9	)
Adjusted EBITDA*	$	2.0			$	(3.5	)		$	1.2			$	(27.0	)
Key Operating Metrics
Bookings(2)	$	30.3				—			$	99.1				—
Contracted Backlog(3)**	$	22.2				—			$	22.2				—
Storage Operating AUM (in GWh)(4)**		1.8				1.6				1.8				1.6
Solar Operating AUM (in GW)(5)**		33.9				28.5				33.9				28.5
CARR(6)**	$	70.1				—			$	70.1				—
ARR(7)**	$	60.2			$	51.4			$	60.2			$	51.4

(1) As previously disclosed, revenue, gross profit (loss), and net loss were negatively impacted by a $38.7 million reduction in revenue for the nine months ended September 30, 2024, and by excess supplier costs and resulting liquidated damages, as discussed below.

(2) Beginning with our Q1 2025 Quarterly Report on Form 10-Q, the Company defines “Bookings” as the total value of executed purchase orders. Previously this metric included all relevant executed contracts, regardless of whether or not a related purchase order had been executed. Prior period amounts have been excluded as they do not reflect the newly defined metrics.

(3) Beginning with our Q1 2025 Quarterly Report on Form 10-Q, the Company defines “Contracted Backlog” as the total value of hardware and non-recurring services bookings with executed purchase orders in dollars, as of a specific date. Previously, this metric included the total contract value of hardware, software and services contracts recognized ratably over the contract period, regardless of whether or not a related purchase order had been executed. Prior period amounts have been excluded as they do not reflect the newly defined metrics.

(4) Represents total GWh of energy storage systems in operation. Contracted storage AUM from prior periods has been replaced with this metric.

(5) Total GW of solar systems in operation.

(6) Beginning with our Q1 2025 Quarterly Report on Form 10-Q, the Company defines CARR as the annualized value from Stem customer subscription contracts with executed purchase orders signed in the period for systems that are not yet operating and all operating Stem customer subscription contracts, including solar software, storage software & recurring managed services, and some recurring professional services contracts. Previously, this metric included the annualized value from all executed Stem customer subscription contracts, regardless of whether or not a related purchase order had been executed. Prior period amounts have been excluded as they do not reflect the newly defined metrics.

(7) Represents annualized recurring revenue from operating customer subscription contracts, including solar software, storage software & recurring managed services, and any recurring professional services contracts.

* Non-GAAP financial measures. Adjusted EBITDA and non-GAAP gross profit and margin for the nine months ended September 30, 2024 were adjusted to exclude the impact of the previously disclosed reductions in revenue, excess supplier costs and resulting liquidated damages, as discussed below. See the section below titled “Use of Non-GAAP Financial Measures” for details and the section below titled “Reconciliations of Non-GAAP Financial Measures” for reconciliations.

** At period end.

Third Quarter 2025 Financial and Operating Results

Financial Results

Revenue increased 31% year-over-year to $38.2 million, versus $29.3 million in the third quarter of 2024. As previously disclosed, reported revenue for the third quarter of 2024 reflected a $5.6 million reduction in revenue due to updated valuations of certain contracts that provided parent company guarantees for hardware revenue recorded in 2022 and 2023.

GAAP gross profit was $13.5 million, or 35%, versus $6.2 million, or 21%, in the third quarter of 2024. The year-over-year increase in GAAP gross profit ($) and GAAP gross margin (%) was largely driven by the absence of the $5.6 million reduction in revenue discussed above and by improved hardware margins.

Non-GAAP gross profit was $17.9 million, or 47%, versus $16.2 million, or 46%, in the third quarter of 2024. The year-over-year increase in non-GAAP gross profit ($) and non-GAAP gross margin (%) was due to improved hardware margins and operational efficiencies.

Net loss was $23.8 million versus third quarter 2024 net loss of $148.3 million. The year-over-year improvement was largely due to the absence of a $104.1 million, one-time impairment of bad debt expense associated with impairment of receivables related to customer contracts that provided a parent company guarantee reflected during the third quarter of 2024, and lower operating costs.

Adjusted EBITDA was $2.0 million compared to $(3.5) million in the third quarter of 2024. The improvement was primarily driven by significantly lower operating expenses resulting from ongoing cost reduction and profitability improvement initiatives.

The Company ended the third quarter with $43.1 million in cash and cash equivalents, versus $40.8 million reported at the end of the second quarter.

Operating Results

Bookings were $30.3 million in the quarter compared to $34.3 million in the second quarter. Bookings were down sequentially due to strategic de-emphasis of low-margin battery hardware bookings. Software and services and edge hardware bookings were sequentially flat.

Contracted backlog was $22.2 million at the end of the quarter compared to $26.8 million at the end of the second quarter of 2025. Contracted backlog was sequentially down due to the previously mentioned lower quarterly bookings, and increased hardware and services revenue recognition in the quarter.

CARR was $70.1 million at the end of the quarter versus $69.2 million at the end of the second quarter of 2025.

Storage operating AUM increased 6% sequentially to 1.8 GWh for the quarter. Solar operating AUM increased 4% sequentially to 33.9 GW for the third quarter of 2025.

ARR increased 3% sequentially to $60.2 million at the end of the quarter from $58.5 million at the end of the second quarter of 2025.

The following table provides a summary of contracted backlog at the end of the third quarter, and includes only hardware and non-recurring services contracts, compared to backlog at the end of the second quarter of 2025 ($ in millions):

End of 2Q25	$	26.8
Add: Bookings		18.5
Less: Hardware revenue		(19.2	)
Project and professional services revenue		(2.9	)
Amendments/Cancellations		(1.0	)
End of 3Q25	$	22.2

Outlook

The Company is revising its full-year 2025 guidance as follows ($ millions, unless otherwise noted):

	Previous	Revised
Revenue	$125 – $175	$135 – $160
Software, edge hardware, & services	$120 – $140	$125 – $140
Battery hardware resale	Up to $35	Up to $20
Non-GAAP Gross Margin (%)*	30% – 40%	40% – 50%
Adjusted EBITDA*	$(10) – $5	$(5) – $5
Operating Cash Flow	$0 – $15	$(5) – $5
Year end ARR**	$55 – $65	Unchanged

* See the section below titled “Reconciliations of Non-GAAP Financial Measures” for information regarding why Stem is unable to reconcile non-GAAP Gross Margin and adjusted EBITDA guidance to their most comparable financial measures calculated in accordance with GAAP.

** See below for definitions.

Business Updates

• On Oct. 14, 2025, the Company announced the expansion of its Berlin operations with a move to centralized and collaborative facilities. The new office underscores Stem’s commitment to advancing utility-scale solar, storage and hybrid solar-plus-storage projects across the EMEA region. The Berlin hub is designed as Stem’s European competence center, centralizing teams with regional expertise focused on solving the most pressing challenges facing large-scale renewable projects today. By expanding technical depth and customer support in Berlin, Stem combines global expertise with local execution and service to help customers succeed in increasingly complex EMEA markets.
• On Sept. 12, 2025, the Company published a letter to shareholders reflecting on its journey of strategic realignment since the strategy review commenced in the third quarter of 2024. The letter highlights the improvements in performance since the commencement of the strategy review, new product rollouts, a new investor presentation, the Company’s refreshed website, and a unified corporate identity under the Stem brand and a consolidation of all products under the PowerTrack™ Suite.
• On Sept. 5, 2025, the Company announced the rebranding of its flagship enterprise platform, Athena®, to PowerTrack Optimizer. Powering Managed Service offerings, the move represents the evolution of Stem’s intelligent software tools, designed to help organizations unlock the full value of their clean energy systems while simplifying operations and maximizing both economic and environmental benefits. The evolution of Athena into PowerTrack Optimizer supports the Company’s consolidation of offerings into a single stack under one name, PowerTrack, combining the strengths of existing offerings to create a unified solution serving energy management needs from one place throughout the entire project lifecycle.
• On Sept. 2, 2025, the Company announced its further strategic expansion into the standalone storage and solar-plus-storage control market with the launch of PowerTrack Energy Management System (EMS). PowerTrack EMS is an intelligent control system that manages battery charging and discharging operations while coordinating grid services and enabling revenue streams for energy storage projects. PowerTrack EMS integrates modular hardware and software architecture including PowerTrack Software for centralized portfolio management, PowerTrack Power Plant Controller (PPC) and PowerTrack SCADA capabilities, with a sophisticated edge user interface (UI) and hardware-agnostic unit controllers that eliminate vendor lock-in while supporting diverse equipment configurations.

Some Factors Affecting our Business and Operations

As previously disclosed, the Company entered into certain contractual guarantees in 2022 and 2023 pursuant to which, if a customer were unable to install or designate hardware to a specified project within a specified period of time, the Company would be required to assist the customer in re-marketing the hardware for resale by the customer. Such guarantees provide that, in such cases, if the customer resold the hardware for less than the amount initially sold to the customer, the Company would be required to compensate the customer for any shortfall in fair value for the hardware from the initial contract price. The Company accounts for specified contractual guarantees as variable consideration. The Company reviews its estimate of variable consideration, including changes in estimates related to such guarantees, each quarter for facts or circumstances that have changed from the time of the initial estimate. As previously disclosed, the Company recorded a net revenue reduction of $38.7 million during the nine months ended September 30, 2024 due to market conditions and revised negotiated valuations of assets under certain hardware price guarantees entered into in 2022 and 2023. Such reductions in revenue were related to deliveries that occurred prior to 2023. The Company has not issued such guarantees since June 2023 and does not intend to issue any new guarantees in the future.

There are no remaining PCGs outstanding, and the Company expects no future impact on its financial results as a result of PCGs.

The Company is subject to risk and exposure from the evolving macroeconomic, regulatory, geopolitical and business environment, including the effects of the One Big Beautiful Bill (OBBB) on our business and that of our suppliers and customers, the effects of increased import tariffs and retaliatory trade policies, global inflationary pressures and interest rates, potential economic slowdowns or recessions, government shutdowns, and geopolitical pressures, including the armed conflicts between Russia and Ukraine, and in the Gaza Strip and nearby areas, as well as tensions between China and the United States, and uncertainty around other current and future trade policies. We regularly monitor and attempt to mitigate the direct and indirect effects of these circumstances on our business and financial results, although there is no guarantee of the extent to which we will be successful in these efforts.

Use of Non-GAAP Financial Measures

In addition to financial results determined in accordance with U.S. generally accepted accounting principles (“GAAP”), this earnings press release contains the following non-GAAP financial measures: adjusted EBITDA, non-GAAP gross profit and non-GAAP gross margin.

We use these non-GAAP financial measures for financial and operational decision-making and to evaluate our operating performance and prospects, develop internal budgets and financial goals, and facilitate period-to-period comparisons. Management believes that these non-GAAP financial measures provide meaningful supplemental information regarding our performance and liquidity by excluding certain expenses and expenditures that may not be indicative of our operating performance, such as stock-based compensation and other non-cash charges, as well as discrete cash charges that are infrequent in nature. We believe that both management and investors benefit from referring to these non-GAAP financial measures in assessing our performance and when planning, forecasting, and analyzing future periods. These non-GAAP financial measures also facilitate management’s internal comparisons to our historical performance and liquidity as well as comparisons to our competitors’ operating results, to the extent that competitors define these metrics in the same manner that we do. We believe these non-GAAP financial measures are useful to investors both because they (1) allow for greater transparency with respect to key metrics used by management in its financial and operational decision-making and (2) are used by investors and analysts to help them analyze the health of our business. Our calculation of these non-GAAP financial measures may differ from similarly titled non-GAAP measures, if any, reported by other companies. In addition, other companies may not publish these or similar measures. These non-GAAP financial measures should be considered in addition to, not as a substitute for, or superior to, other measures of financial performance prepared in accordance with GAAP. For reconciliation of adjusted EBITDA and non-GAAP gross profit and margin to their most comparable GAAP measures, see the section below entitled “Reconciliations of Non-GAAP Financial Measures.”

Definitions of Non-GAAP Financial Measures

We define adjusted EBITDA as net loss attributable to Stem before depreciation and amortization, including amortization of internally developed software, interest expense, further adjusted to exclude stock-based compensation and other income and expense items, including net gain on extinguishment of debt, reduction in revenue, excess supplier costs and resulting liquidated damages, and income tax provision or benefit. The expenses and other items that we exclude in our calculation of adjusted EBITDA may differ from the expenses and other items, if any, that other companies exclude when calculating adjusted EBITDA.

We define non-GAAP gross profit as gross profit excluding amortization of capitalized software, impairments related to decommissioning of end-of-life systems, excess supplier costs and resulting liquidated damages, and reduction in revenue. Non-GAAP gross margin is defined as non-GAAP gross profit (loss) as a percentage of revenue.

In the three months ended March 31, 2024, we incurred costs of $1.0 million above initially agreed prices on the acquisition of certain hardware systems from one of our suppliers, which resulted from production delays by such supplier. This in turn caused fulfillment and delivery delays on an order to one of our customers, as a result of which we further incurred liquidated damages of $4.8 million during the year ended December 31, 2023 under the customer contract. Because we had not previously incurred costs above initially agreed upon prices with a hardware supplier and were subsequently required to pay liquidated damages to a customer, we excluded these two items from adjusted EBITDA and non-GAAP gross profit to better facilitate comparisons of our underlying operating performance across periods.

As stated above, in certain customer contracts, the Company previously agreed to provide a guarantee that the value of purchased hardware will not decline for a certain period of time. The Company accounted for such contractual terms and guarantees as variable consideration at each measurement date. The Company reviewed its estimate of variable consideration each quarter, including changes in estimates related to such guarantees, for facts or circumstances that changed from the time of the initial estimate. Additionally, as a result of impairment of accounts receivables related to contracts that provided for a parent company guarantee, the Company recorded a bad debt expense of $104.1 million during the year ended December 31, 2024.

See also the section below entitled “Reconciliations of Non-GAAP Financial Measures.”

Conference Call Information

Stem will hold a conference call to discuss this earnings press release and business outlook on Wednesday, October 29, 2025, beginning at 5:00 p.m. Eastern Time. The conference call and accompanying slides may be accessed via a live webcast on a listen-only basis on the Events & Presentations page of the Investor Relations section of the Company’s website at https://investors.stem.com/events-and-presentations. The call can also be accessed live over the telephone by dialing (877) 407-3982, or for international callers, (201) 493-6780 and referencing Stem. An audio replay will be available shortly after the call and can be accessed by dialing (844) 512-2921 or for international callers by dialing (412) 317-6671. The passcode for the replay is 13756128. The replay will be available until Saturday, November 29, 2025. An archive of the webcast will be available shortly after the call on Stem’s website at https://investors.stem.com/overview for 12 months following the call.

About Stem

Stem (NYSE: STEM) is a global leader reimagining technology to support the energy transition. Turning complexity into clarity, and potential into performance.

Helping asset owners, operators and stakeholders benefit from the full value of their energy portfolio by enabling the intelligent development, deployment, and operation of clean energy assets. Stem’s integrated software suite, PowerTrack, is the industry standard and best-in-class for asset monitoring, supported by professional and managed services, under one roof. Meant to tackle challenges as seamlessly as possible, Stem shows the information needed clearly and accurately and helps harness raw data to inform actionable insight. With global projects managed in 55 countries, customers have relied on Stem for nearly 20 years to maximize the value of their clean energy projects.

Driven by human and artificial intelligence – Stem is unlocking energy intelligence. Learn more at stem.com.

Forward-Looking Statements

This earnings press release, as well as other statements we make, contains “forward-looking statements” within the meaning of the federal securities laws, which include any statements that are not historical facts. Such statements often contain words such as “expect,” “may,” “can,” “believe,” “predict,” “plan,” “potential,” “projected,” “projections,” “forecast,” “estimate,” “intend,” “anticipate,” “ambition,” “goal,” “target,” “think,” “should,” “could,” “would,” “will,” “hope,” “see,” “likely,” and other similar words. Forward-looking statements address matters that are, to varying degrees, uncertain, such as statements about our financial and operating performance, guidance, outlook, targets and other forecasts or expectations regarding, or dependent on, our business outlook and strategy; our joint ventures, partnerships and other alliances; forecasts or expectations regarding energy transition and global climate change; reduction of greenhouse gas emissions; the integration and optimization of energy resources; our business strategies and those of our customers; our ability to retain or upgrade current customers, further penetrate existing markets or expand into new markets; the effects of natural disasters and other events beyond our control; the expected impacts of the One Big Beautiful Bill Act (“OBBB”) on our business and that of our customers; the direct or indirect effects on our business of macroeconomic factors and geopolitical instability, such as the armed conflicts between Russia and Ukraine and in the Gaza Strip and nearby areas; and our future results of operations, including revenue, adjusted EBITDA and the other metrics presented here.

Contacts

Stem Investor Contacts
Erin Reed, Stem

Marc Silverberg, ICR

IR@stem.com

Stem Media Contacts
Jessie Smiley, Stem

press@stem.com

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