Sige New Energy's explosive growth raises concerns: soaring debt ratio, declining unit prices of core products

Ask AI · Sig Energy’s Three-Time Submission: Can Sponsor Changes Ease the “Bet” Pressure?

“Harbor Business Observation” by Xu Huijing

The listing road of Sig Energy (Shanghai) Co., Ltd. (hereinafter, “Sig Energy”) has seen three submissions for a Hong Kong IPO in under 14 months. The sponsor has made adjustments twice, and the time pressure imposed by the bet/“earnout” agreement has been looming like a shadow.

But the good news is that the company has finally passed the hearing recently. If nothing unexpected happens, the company is expected to list on the Hong Kong Stock Exchange.

A simple recap: the company’s listing journey started in February 2025. The first submission had CITIC Lyon Securities and Paris Securities of France as joint sponsors. The six-month validity period expired without passing the hearing, and the prospectus automatically became invalid. In September of the same year, the second submission was filed. The sponsor made no adjustments, and it still failed to make progress, and it expired again in early March 2026. Only a few days later, on March 9, 2026, the third submission was filed, and the joint sponsors were changed to CITIC Securities and Paris Securities of France.

The prospectus discloses that the company signed bet clauses with investors such as Hillhouse Capital and Waddell International. If the company withdraws the application, is rejected, or fails to complete the listing within 18 months after submitting the application, investors will trigger a redemption. With the first two submissions being invalidated one after another, the countdown has already been significantly shortened. The outcome of the third submission is not only about whether the bet risk avoidance can be carried out, but also whether the sponsor’s “upgrade” can help the review break through—this is also a focal point of market attention.

1

Explosive growth in performance, with unit prices declining year by year

The prospectus and Tianyancha show that Sig Energy was established in May 2022. It is an innovative company focused on distributed energy storage system (DESS) solution offerings. The company mainly engages in the R&D, production, and sales of stackable distributed solar-plus-storage integrated machines. Its flagship product, SigenStor, uses a modular, stackable design that seamlessly integrates a photovoltaic inverter, a DC charging module, an energy storage converter (PCS), energy storage batteries, and an energy management system (EMS) into one unit.

Financial data shows that in 2023, 2024, and for January to September 2025 (hereinafter referred to as the reporting period), Sig Energy achieved operating revenue of RMB 58.30 million, RMB 1.330 billion, and RMB 5.641 billion, respectively.

Judging from the growth trend, the company’s operating revenue has shown explosive growth. In 2024, revenue increased by approximately 22.8 times compared with 2023. In the first nine months of 2025, revenue increased by approximately 7.1 times compared with the same period in 2024. This rapid growth is mainly attributable to the fast expansion of the global energy storage market and the continuous improvement of the company’s product competitiveness.

On gross margin, during the reporting period, the company’s consolidated gross margins were 31.3%, 46.9%, and 51.6%, respectively, showing a continuous upward trend. This is mainly due to the rapid expansion of production and sales scale leading to lower unit production costs, as well as improved profitability driven by product structure optimization.

For net profit, in 2023 the company recorded a net loss of RMB 373 million, mainly because it was in the early stage of development and invested heavily in expanding capacity, expanding its global distributor network, and advancing product R&D. In 2024, the company turned profitable, recording a net profit of RMB 83.85 million. In the first nine months of 2025, net profit reached RMB 1.890 billion, with adjusted net profit (a measurement indicator not under the “International Financial Reporting Standards”) of RMB 2.168 billion.

In terms of product mix, the flagship product SigenStor is the absolute driver of the company’s revenue. During the reporting period, the proportion of SigenStor sales to total revenue was 96.4%, 90.6%, and 92.8%, respectively. As of September 30, 2025, the company’s SigenStor sales volume reached 2,355 MWh, up approximately 9.7 times from 220 MWh in the same period of 2024.

What is worth noting is that the company’s average selling price for its products has been trending downward. SigenStor’s average selling price decreased from RMB 3.17 per watt-hour in 2023 to RMB 2.69 per watt-hour in 2024, and further declined to RMB 2.22 per watt-hour in the first nine months of 2025. The company explained that this is mainly because, after sales volume increased significantly, the company provided higher overall sales rebates to its distributors.

Regarding expense control, during the reporting period, the company’s sales and distribution expenses were RMB 53.422 million, RMB 169 million, and RMB 276 million, respectively. The sales expense ratios were 91.6%, 12.7%, and 4.9%, respectively. Because its revenue kept soaring, the expense ratio showed a rapid downward trend.

In the same period, R&D expenses were RMB 193 million, RMB 280 million, and RMB 365 million, respectively. The R&D expense ratios were 331.0%, 21.1%, and 6.5%, respectively.

Although the company’s R&D expenses have kept increasing, the product quality risk that appeared a few months ago still leaves some cause for concern.

The prospectus discloses that in November 2025, the company voluntarily initiated a recall of a limited batch of inverter models sold in Australia. The reason was that a small number of AC plug units were damaged due to installation issues, creating a potential fire risk.

So far, the company has not received any reports of property damage or personal injuries, and this matter does not have any significant impact on the company’s business, financial condition, or operating performance. The company has implemented the following preventive and remedial measures: initiating firmware updates and actively monitoring system operation; freely replacing affected users’ inverters with inverters equipped with updated AC plugs; and providing an additional 2-year warranty for the replaced inverters on top of the original 10-year standard warranty period.

Yu Fenghui, an invited research fellow at a Chinese financial think tank, said that given Sig Energy’s reliance on one major product and the compliance risks overseas, this situation does pose challenges to the company’s long-term sustainability. A high share of revenue coming from a single product exposes the company to significant market risk. Once the market demand for that product changes or the product is replaced by a technical alternative, it would directly affect the company’s revenue.

2

Risks from reliance on the distribution network are significant, and the debt ratio has surged

One major risk faced by Sig Energy is high customer concentration. During the reporting period, the five largest customers generated revenue that accounted for 72.5%, 37.1%, and 48.6% of the total revenue for the respective periods. The revenue contribution from the largest customer was 22.9%, 8.9%, and 14.7%, respectively.

In terms of the sales model, the company mainly relies on partnership relationships with distributors for global marketing and product sales. As of September 30, 2025, the company had established a broad cooperation network with 161 distributors across more than 80 countries and regions. During the reporting period, revenue generated through distributor channels accounted for nearly 100%, indicating an extremely high dependence on the distribution network. There are no direct or indirect legal or contractual relationships with secondary distributors (including installers).

Yu Fenghui further pointed out that highly concentrated customer and channel structures increase business instability. The recall incident in Australia further exposes potential risks in the company’s product quality control and overseas market compliance management. These factors may result in lower market multiples being assigned during the valuation of the Hong Kong IPO, and the review process may also require providing more detailed risk disclosures and response measures.

As for suppliers, during the reporting period, the purchase amounts from the top five suppliers accounted for 41.1%, 43.8%, and 41.9% of total purchases, respectively. The share of purchases from the largest supplier was 14.3%, 17.9%, and 15.0%, respectively. Supplier concentration is at a relatively reasonable level, but price fluctuations of core raw materials such as batteries and semiconductors may still put pressure on the company’s cost side. During the reporting period, the proportion of material costs to cost of sales was 67.8%, 81.8%, and 82.2%, respectively.

Meanwhile, the company’s trade receivables and notes receivable were RMB 20.30 million, RMB 357.6 million, and RMB 2.320 billion, respectively, showing a rapid growth trend. The trade receivables turnover days were 63 days, 51 days, and 64 days, and the turnover efficiency remained overall stable.

For inventory, as of September 30, 2025, the company’s inventory book balance was RMB 2.568 billion, an increase of approximately 182.8% from RMB 908 million at the end of 2024.

From the perspective of financial health, the company’s asset-liability ratio increased from 59.8% in 2023 to 65.4% as of September 30, 2025. The current ratio decreased from 1.4 times to 1.3 times, and the quick ratio decreased from 0.9 times to 0.8 times.

Regarding cash flows, in 2023 the company recorded a net cash outflow from operating activities of RMB 288 million, mainly because investments in working capital increased—especially due to increases in accounts receivable and inventory. In 2024, the net cash outflow from operating activities dropped sharply to RMB 36.97 million. For the first nine months of 2025, the company recorded net cash inflow from operating activities of RMB 24.65 million, and the cash flow situation improved somewhat.

Yu Fenghui believes that the simultaneous surge in inventory and accounts receivable indicates that the company’s sales collection efficiency is not high. There may be issues such as inventory backlog or overly lenient credit policies, which pose a threat to cash flow management. With an asset-liability ratio as high as 65.4%, and combined with the pressure from the listing bet clauses, it means the company not only faces a high risk of financial leverage, but may also see instability in corporate governance if it fails to meet the bet conditions and thereby affects stakeholders. In this situation, investors will pay even closer attention to the authenticity of the company’s performance and the healthy state of future cash flows. If these issues cannot be effectively improved, it will negatively affect the IPO pricing and subsequent stock price performance.

3

Huawei-linked entrepreneur; the red-ocean competition faces a test

Sig Energy was established in May 2022, and only began commercial production and sales in May 2023. Due to the company’s relatively short operating history, there is substantial uncertainty regarding the sustainability of its business and its future development prospects.

The prospectus indicates that the main risks the company faces include: limited operating history, which may not represent future financial performance, and the company may be unable to maintain its historical growth rate; if it cannot successfully manage its rapid development, the business and prospects may suffer significant adverse impacts; and it recorded net losses and operating cash outflows during the period of performance records, and there is no guarantee that it can maintain profitability going forward.

Regarding the equity structure, as of the last date of actually practicable, the founder, chairman, and executive director, Mr. Xu Yingtong, directly controls approximately 10.18% of the equity. Through his holding entities (Jiaxing Oujie, Jiaxing Gulin, Jiaxing Mailin, and Jiaxing Maitai), he indirectly controls approximately 39.10% of the equity. In total, he controls approximately 49.28% of the voting rights, making him the controlling shareholder of the company.

It is worth noting that Xu Yingtong is a “Huawei-linked” entrepreneur. Before founding Sig Energy, he worked at Huawei for about 20 years, serving as Huawei’s General Manager of the Intelligent PV business and as the representative of Huawei’s Poland representative office, among other roles. He has extensive industry experience and management capability. This background has also become a focal point for market attention, and several media outlets have linked him to Huawei’s technical genes and management philosophy.

As for financing history, from June 2022 to January 2024, the company went through multiple rounds of financing and cumulatively obtained approximately RMB 715 million in funding. Investors include Hillhouse Capital (via Zhuhai Meiheng), Waddell International (via Guangzhou Huaxin), Yunhui Capital (via Suzhou Yunhui, Jinan Yunhui, etc.), Zhongding Capital (via Jiaxing Dingyun), SF Investment (via Xiamen Xiaoyu), and other well-known investment institutions. The backing from these investors not only provided funding support to the company, but also, to a certain extent, enhanced the company’s market recognition.

From the perspective of industry development trends, the global energy storage system market is currently in a phase of rapid growth. According to a report by Frost & Sullivan, the global shipment volume of stackable distributed solar-storage integrated machine solutions is expected to reach 47.9 gigawatt-hours by 2030, and the compound annual growth rate from 2025 to 2030 is 65.8%. However, as major market participants have been strongly promoting stackable distributed solar-storage integrated machine solutions in 2025, market competition will become increasingly intense.

Based on data from the same institution, Sig Energy has already occupied a leading position in its sub-sector. Its share in the global stackable distributed solar-storage integrated machine solution market is 28.6%, ranking first globally. In the overall distributed solar-storage integrated machine solution market, the company’s share also ranks among the global top three at 8.2%. However, in the broader global markets for distributed energy storage systems and overall energy storage systems, the company’s market share remains relatively limited; during the same period, its share is 0.6% and 0.2%, respectively.

In its prospectus, Sig Energy states that the company plans to use IPO proceeds to further expand its R&D team and improve R&D equipment and technology, strengthen marketing and after-sales service, expand capacity, diversify its product portfolio, and expand industrial and commercial solar-storage-charging solution offerings, as well as for working capital and general corporate purposes. (Produced by Harbor Finance)