Sungrow Power Supply (300274.SZ): 1H25 Review – Robust Global Growth in PV & Storage; AIDC Emerges as the Third Growth Curve

Date: August 26, 2025
Rating: BUY (Maintained)
Target Price: CNY 140.00
Current Price: CNY 102.60
Analysts: Zeng Duohong, Guo Yanan, Hu Junying (Soochow Securities)

Executive Summary

Sungrow Power Supply Co., Ltd. ("Sungrow" or the "Company"), the global leader in solar inverters and energy storage systems (ESS), delivered exceptional financial results in the first half of 2025 (1H25), reaffirming its dominant market position and operational resilience amidst a complex global macroeconomic environment. The Company reported total revenue of CNY 43.53 billion in 1H25, representing a year-over-year (YoY) increase of 40.3%, while attributable net profit surged by 56.0% YoY to CNY 7.73 billion. This performance was driven by robust demand in overseas markets, particularly in energy storage, and sustained profitability improvements across core business segments.

The structural shift in Sungrow’s revenue mix continues to favor high-margin businesses. The Energy Storage System (ESS) segment emerged as the primary growth engine, recording revenue of CNY 17.8 billion in 1H25, a staggering 127.8% YoY increase. Meanwhile, the Photovoltaic (PV) Inverter business maintained steady growth with revenue of CNY 15.3 billion (+17.1% YoY), demonstrating the Company’s ability to sustain volume growth even as the global PV installation base matures. The overall gross margin expanded by 1.9 percentage points (pct) YoY to 34.4%, reflecting favorable product mix shifts, cost optimization initiatives, and the diminishing impact of raw material volatility.

Beyond its core renewable energy offerings, Sungrow is strategically diversifying into the Artificial Intelligence Data Center (AIDC) power supply sector. Leveraging its deep expertise in power electronics, the Company has established a dedicated business unit to develop specialized power solutions for AIDCs, with product launches expected in 2026. This initiative represents a significant strategic pivot, aiming to establish a "third growth curve" that capitalizes on the surging global demand for high-density computing infrastructure.

In light of the stronger-than-expected 1H25 performance and the anticipated normalization of US trade policies regarding energy storage imports, we have revised our earnings forecasts upward for the 2025–2027 period. We now project attributable net profits of CNY 14.04 billion, CNY 16.20 billion, and CNY 17.89 billion for 2025, 2026, and 2027, respectively. These figures represent growth rates of 27.2%, 15.4%, and 10.5% YoY. Based on a target P/E multiple of 18x for 2026 earnings—justified by the Company’s leading market share, superior profitability, and new growth avenues—we maintain our BUY rating with a raised target price of CNY 140.00.

Key Takeaways

1. Financial Performance: Accelerated Growth and Margin Expansion

Sungrow’s 1H25 financial results underscore a trajectory of accelerated top-line growth coupled with enhanced bottom-line profitability. The Company’s ability to outpace industry average growth rates highlights its competitive moat in brand recognition, channel distribution, and technological leadership.

1.1 Revenue and Profit Analysis

• 1H25 Aggregate Performance:
  • Total Revenue: CNY 43.53 billion, up 40.3% YoY.
  • Attributable Net Profit: CNY 7.73 billion, up 56.0% YoY.
  • Gross Margin: 34.4%, an improvement of 1.9 pct YoY.
  • Net Profit Margin: 17.8%, an improvement of 1.8 pct YoY.
• Q2 2025 Sequential Dynamics:
  • Revenue: CNY 24.5 billion, representing a 33.1% YoY increase and a 28.7% quarter-over-quarter (QoQ) increase.
  • Net Profit: CNY 3.91 billion, up 36.5% YoY and 2.1% QoQ.
  • Gross Margin: 33.8%, up 4.3 pct YoY but down 1.4 pct QoQ. The sequential decline in Q2 margin is attributed to seasonal factors and minor fluctuations in product mix, yet it remains at a historically healthy level.
  • Net Profit Margin: 16.0%, up 0.4 pct YoY but down 4.1 pct QoQ. The QoQ decline in net margin primarily reflects increased operating expenses in Q2, particularly in sales and R&D, as the Company ramps up investments for future growth initiatives.

Note: 1H24 figures are derived based on reported YoY growth rates.

The divergence between revenue growth (40.3%) and net profit growth (56.0%) indicates significant operating leverage. As fixed costs are spread over a larger revenue base, each incremental unit of sales contributes disproportionately to the bottom line. Furthermore, the improvement in gross margin suggests that Sungrow is successfully navigating the pricing pressures often seen in mature PV markets by focusing on high-value-added services and premium storage solutions.

1.2 Cash Flow and Balance Sheet Strength

• Operating Cash Flow: Sungrow generated CNY 3.43 billion in net operating cash flow in 1H25, a substantial improvement compared to the same period last year (an increase of CNY 6.04 billion). This robust cash generation capability underscores the quality of the Company’s earnings and its efficient working capital management.
• Capital Expenditure (CapEx): CapEx totaled CNY 1.46 billion in 1H25, up 25.1% YoY. This increase reflects strategic investments in manufacturing capacity expansion, particularly for energy storage systems, and R&D infrastructure to support new product lines such as AIDC power supplies.
• Inventory Management: Inventory levels stood at CNY 29.71 billion at the end of 1H25, a modest increase of 2.3% from the beginning of the year. Given the 40%+ revenue growth, this slight inventory build-up is manageable and likely reflects proactive stocking for peak season shipments in H2. The inventory turnover efficiency remains strong, mitigating risks of obsolescence in a rapidly evolving technology landscape.
• Shareholder Returns: Demonstrating a commitment to shareholder value, Sungrow announced a cash dividend of CNY 1.95 billion for 1H25, equivalent to a 25% payout ratio of attributable net profit. This consistent dividend policy enhances the investment appeal of the stock, providing a yield cushion alongside capital appreciation potential.

2. Segment Analysis: Storage Leads, Inverters Stabilize

Sungrow’s business portfolio is well-diversified, but the growth dynamics are clearly skewed towards energy storage. The Company’s strategic focus on integrating PV and storage solutions is paying off, creating a synergistic ecosystem that locks in customers and enhances lifetime value.

2.1 Energy Storage Systems (ESS): The Primary Growth Engine

• Revenue: CNY 17.8 billion in 1H25, surging 127.8% YoY.
• Gross Margin: 39.9%, remaining stable with only a 0.2 pct YoY decline.
• Analysis:
  The ESS segment’s explosive growth is driven by several factors:
  1. Global Demand Surge: The transition to renewable energy necessitates large-scale storage to address intermittency issues. Markets such as Europe, the Middle East, and Asia-Pacific are witnessing accelerated adoption of utility-scale storage projects.
  2. Product Leadership: Sungrow’s PowerTitan series has gained significant traction globally due to its high safety standards, liquid cooling technology, and grid-forming capabilities. The Company’s ability to deliver turnkey solutions, including battery packs, power conversion systems (PCS), and energy management systems (EMS), provides a competitive edge over pure-play battery manufacturers or PCS-only providers.
  3. Pricing Power: Despite intense competition in the battery cell market, Sungrow has maintained robust margins (~40%). This indicates strong brand premium and effective cost pass-through mechanisms. The slight margin compression (0.2 pct) is negligible and likely reflects normal competitive adjustments rather than a structural deterioration.
  4. US Market Recovery: The normalization of US storage shipments, following earlier logistical and policy hurdles, has contributed significantly to Q2 performance. The expectation of stabilized tariff environments further supports visibility for H2 2025 and 2026.

2.2 PV Inverters: Steady Growth in a Mature Market

• Revenue: CNY 15.3 billion in 1H25, up 17.1% YoY.
• Gross Margin: 35.7%, down 1.9 pct YoY.
• Analysis:
  The PV inverter market is more mature and competitive than the storage market. However, Sungrow’s 17.1% growth outpaces many peers, indicating market share gains.
  1. Market Share Consolidation: As smaller players struggle with supply chain complexities and financing costs, Sungrow leverages its scale to secure large utility-scale contracts.
  2. Margin Pressure: The 1.9 pct decline in gross margin is attributable to intensified price competition in certain regions (notably China and parts of Europe) and a shift in product mix towards string inverters which may have slightly lower margins than central inverters in specific contexts. However, a 35.7% margin remains exceptionally healthy for the hardware sector, reflecting efficient manufacturing and component sourcing.
  3. Technological Moat: Sungrow continues to lead in high-voltage, high-efficiency inverter technologies. The integration of smart O&M (Operations and Maintenance) features adds recurring revenue potential and strengthens customer stickiness.

2.3 New Energy Investment Development

• Revenue: CNY 8.40 billion in 1H25, down 6.2% YoY.
• Gross Margin: 18.1%, up 1.2 pct YoY.
• Analysis:
  The decline in revenue from the investment development segment is strategic. Sungrow has been optimizing its asset-light strategy, reducing exposure to capital-intensive project development and construction to focus on higher-return equipment manufacturing and system integration. The improvement in margin suggests that the remaining projects are of higher quality or that cost controls in project execution have improved. This segment serves as a channel to drive equipment sales rather than a primary profit center, and its contraction does not detract from the overall positive narrative.

3. Operational Efficiency and Strategic Investments

3.1 Expense Structure and R&D Intensity

• Period Expenses: Total period expenses amounted to CNY 4.9 billion in 1H25, up 23.4% YoY. However, the expense ratio decreased by 1.5 pct YoY to 11.3%, demonstrating effective cost control relative to revenue growth.
• Q2 Expense Spike: In Q2 alone, expenses reached CNY 2.87 billion, up 55.3% YoY and 41% QoQ. The expense ratio for Q2 was 11.7%, up 1.7 pct YoY and 1.0 pct QoQ.
  • Sales Expenses: CNY 1.33 billion in 1H25, up 103% YoY. This significant increase is driven by aggressive global marketing efforts, expansion of sales channels in emerging markets, and after-sales service network enhancements to support the growing installed base of storage systems.
  • R&D Expenses: CNY 1.24 billion in 1H25, up 49% YoY. Sungrow maintains a high R&D intensity, crucial for maintaining technological leadership in both PV and storage. Key areas of focus include next-generation semiconductor applications (SiC/GaN), grid-forming algorithms, and now, AIDC power architectures.
• Impairment Provisions: The Company recorded CNY 690 million in asset impairment losses and CNY 260 million in credit impairment losses in 1H25. These provisions reflect a prudent approach to risk management, cleaning up the balance sheet by addressing potential bad debts and obsolete inventory. While they impact short-term profits, they enhance the quality of future earnings by removing uncertainty.

3.2 Strategic Pivot: AIDC as the Third Growth Curve

Perhaps the most intriguing development in Sungrow’s 1H25 report is the formal entry into the Artificial Intelligence Data Center (AIDC) power supply market.

• Strategic Rationale:
  1. Synergy with Core Competencies: AIDCs require highly reliable, efficient, and dense power supply solutions. Sungrow’s decades of experience in power electronics, thermal management, and grid interaction are directly transferable to this domain.
  2. Market Opportunity: The global AI boom is driving unprecedented demand for data centers. Traditional UPS (Uninterruptible Power Supply) and power distribution units are being replaced by more integrated, efficient, and scalable solutions. Sungrow aims to capture a share of this high-growth market.
  3. Diversification: By entering the AIDC sector, Sungrow reduces its reliance on the cyclical renewable energy market. The tech/data center sector offers different demand drivers and potentially higher margins for specialized power products.
• Execution Plan:
  • Organizational Structure: A dedicated business unit has been established to focus exclusively on AIDC power products. This ensures focused resource allocation and agile decision-making.
  • Timeline: Product launches are targeted for 2026. This timeline allows for rigorous testing, certification, and pilot projects with key hyperscale customers.
  • Potential Impact: While revenue contribution in 2025 will be minimal, the AIDC business could become a significant revenue driver by 2027–2028. It also re-rates the Company’s valuation multiple, aligning it closer to high-growth tech infrastructure providers rather than traditional manufacturing firms.

Risks / Headwinds

While Sungrow’s outlook is predominantly positive, institutional investors must consider the following risks that could impact financial performance and stock valuation:

1. Geopolitical and Trade Policy Risks

• US Tariffs and Regulations: Although the report assumes a normalization of US tariffs, the geopolitical landscape remains volatile. Any reintroduction of harsher tariffs on Chinese energy products, or restrictions under the Inflation Reduction Act (IRA) regarding foreign entities of concern (FEOC), could disrupt Sungrow’s US operations. The US is a high-margin market, and any barrier to entry would disproportionately affect profitability.
• European Trade Barriers: The EU is increasingly scrutinizing Chinese subsidies and market practices. Potential anti-subsidy investigations or carbon border adjustment mechanisms (CBAM) could increase compliance costs or reduce competitiveness in Europe.

2. Intensifying Competition

• Price Wars: The PV inverter and ESS markets are attracting new entrants, including traditional electrical giants and battery manufacturers expanding downstream. This could lead to prolonged price wars, eroding gross margins. While Sungrow currently maintains premium pricing, sustained pressure could force margin concessions.
• Technology Disruption: Rapid advancements in battery chemistry (e.g., solid-state batteries) or inverter topology could render existing products obsolete faster than anticipated. Failure to keep pace with R&D could result in loss of market share.

3. Macroeconomic and Demand Uncertainty

• Interest Rate Sensitivity: Renewable energy projects are capital-intensive and sensitive to interest rates. Higher-for-longer interest rates in key markets (US, Europe) could delay project financing and installation timelines, impacting short-term demand.
• Grid Congestion: In many developed markets, grid congestion is becoming a bottleneck for new renewable connections. Delays in grid approvals can push back revenue recognition for large utility-scale projects.

4. Execution Risk in New Ventures

• AIDC Market Entry: The AIDC power supply market is dominated by established players (e.g., Vertiv, Eaton, Schneider Electric). Sungrow faces significant barriers to entry, including customer certification cycles and entrenched relationships. There is no guarantee that the AIDC venture will achieve the projected scale or profitability.
• Supply Chain Disruptions: Reliance on key components such as IGBTs, chips, and lithium cells exposes Sungrow to supply chain bottlenecks. Any disruption in the upstream supply chain could impact delivery schedules and customer satisfaction.

5. Financial Risks

• Currency Fluctuations: As a global exporter, Sungrow is exposed to foreign exchange risks. Significant appreciation of the CNY against the USD or EUR could negatively impact reported revenues and margins.
• Credit Risk: The increase in accounts receivable alongside revenue growth raises credit risk, especially in emerging markets with less stable economic conditions. The reported credit impairment losses indicate some exposure, which needs continuous monitoring.

Rating / Sector Outlook

Sector Outlook: Renewable Energy & Storage

The global energy transition remains intact, supported by stringent climate goals and energy security concerns.
* Solar PV: The sector is transitioning from high-volume growth to quality-driven growth. Market consolidation is expected, benefiting leaders like Sungrow with strong balance sheets and brand equity.
* Energy Storage: This segment is in the early stages of an S-curve adoption phase. With the declining cost of batteries and increasing penetration of renewables, storage is becoming indispensable. We expect the global ESS market to grow at a CAGR of >30% over the next five years.
* AIDC Infrastructure: The AI-driven data center boom is creating a parallel high-growth market for power and thermal management solutions. This sector offers higher valuation multiples and resilient demand, decoupled from traditional economic cycles.

Valuation and Rating Justification

We maintain our BUY rating on Sungrow Power Supply based on the following valuation framework:

1. Earnings Revisions: We have upgraded our net profit forecasts for 2025–2027 to CNY 14.04 billion, CNY 16.20 billion, and CNY 17.89 billion, respectively. This reflects the stronger 1H25 performance and improved visibility in the US storage market.
2. P/E Multiple Analysis:
   • Current Price: CNY 102.60
   • 2025E EPS: CNY 6.77 $\rightarrow$ 2025E P/E: ~15.2x
   • 2026E EPS: CNY 7.81 $\rightarrow$ 2026E P/E: ~13.1x
   • 2027E EPS: CNY 8.63 $\rightarrow$ 2027E P/E: ~11.9x
3. Target Price Calculation:
   • We apply a target P/E multiple of 18x to the 2026E EPS of CNY 7.81.
   • Target Price = 18 x 7.81 = CNY 140.58 (Rounded to CNY 140.00).
   • Upside Potential: $(140 - 102.6) / 102.6 \approx 36.5\%$.

The 18x multiple is justified by:
* Leadership Premium: Sungrow is the undisputed global leader in inverters and a top-tier player in storage.
* Growth Visibility: Double-digit earnings growth is secured for the next three years.
* Optionality: The AIDC business provides a call option on high-growth tech infrastructure, warranting a valuation re-rating.
* Comparables: Compared to global peers in power electronics and energy infrastructure, Sungrow trades at a discount despite superior growth rates, offering an attractive entry point.

Investment View

1. Core Investment Logic: Quality Growth in a Volatile Market

Sungrow Power Supply represents a rare combination of scale, profitability, and innovation in the renewable energy sector. In an industry often characterized by razor-thin margins and cyclical volatility, Sungrow has demonstrated the ability to deliver consistent double-digit growth and industry-leading margins.

The "Moat" is Widening:
* Brand & Channel: Sungrow’s global brand recognition allows it to command a premium and secure contracts in key markets where trust and reliability are paramount (e.g., Europe, Australia, US). Its extensive service network creates high switching costs for customers.
* Vertical Integration: While not fully vertically integrated like some battery makers, Sungrow’s control over the core power electronics (PCS) and system integration allows it to optimize performance and cost better than competitors who rely on third-party components.
* R&D Flywheel: High R&D spending translates into superior product efficiency and safety features, which in turn drives sales and funds further R&D. This flywheel effect is evident in its leading position in both PV and Storage.

2. Catalysts for Stock Performance

• H2 2025 Seasonal Peak: Historically, H2 is the stronger half for renewable installations. Given the strong order book and improved supply chain conditions, we expect Q3 and Q4 2025 to show continued robust revenue and profit growth, potentially beating consensus estimates.
• US Market Normalization: Any official confirmation of stabilized trade relations or successful navigation of IRA requirements for Sungrow’s US projects will serve as a immediate positive catalyst, re-rating the stock’s risk premium.
• AIDC Product Launch (2026): As details of the AIDC power solutions emerge and pilot projects are announced, the market will begin to price in the potential of this third growth curve. Early partnerships with major tech firms could trigger significant multiple expansion.
• Dividend Yield Enhancement: With a 25% payout ratio and growing earnings, the absolute dividend amount will increase, attracting income-focused institutional investors and providing a floor for the stock price.

3. Strategic Implications for Institutional Portfolios

For institutional investors, Sungrow offers a strategic exposure to two megatrends: Decarbonization and Digitalization (AI Infrastructure).

• Core Holding for Green Energy Themes: Sungrow should be considered a core holding in any renewable energy or clean tech portfolio due to its liquidity, size, and market leadership. It offers lower beta compared to smaller, pure-play storage or PV stocks.
• Hedge Against Tech Volatility: While the AIDC venture links Sungrow to the AI theme, its primary revenue base remains in energy. This provides a diversification benefit within a tech-heavy portfolio, offering exposure to AI infrastructure without the extreme valuation volatility of pure-play AI software or chip stocks.
• ESG Alignment: Sungrow’s strong ESG profile, driven by its core business mission and improving governance (evidenced by transparent reporting and shareholder returns), aligns well with the mandates of ESG-focused funds.

4. Detailed Financial Forecast Assumptions

To arrive at our revised earnings estimates, we have incorporated the following key assumptions:

• Revenue Growth:
  • PV Inverters: We assume a moderate growth rate of 10-15% annually, reflecting market saturation in some regions but offset by market share gains and replacement demand.
  • ESS: We assume a high growth rate of 30-40% annually, driven by global utility-scale projects and commercial & industrial (C&I) adoption.
  • AIDC: Revenue contribution starts in 2026, reaching meaningful levels by 2027.
• Margin Trajectory:
  • Gross Margin: We project a slight stabilization around 30-32% for the group. While ESS margins may face slight pressure due to competition, PV margins should remain stable. The mix shift towards higher-value services and AIDC products should support overall margins.
  • Operating Margin: We expect operating leverage to continue, with sales and R&D expenses growing slower than revenue post-2025, leading to gradual net margin expansion towards 16-17%.
• Tax and Interest:
  • Effective tax rate assumed at ~16-17%, reflecting global operations and tax incentives in various jurisdictions.
  • Net interest income/expense remains neutral to slightly positive given the Company’s strong cash position.

5. Comparative Valuation Context

When comparing Sungrow to its global peers, the valuation appears attractive:

• Vs. Huawei Digital Power (Private): Huawei is a major competitor but is unlisted. Sungrow offers a pure-play public proxy for similar technology trends.
• Vs. Enphase/SolarEdge (US): These companies have faced significant headwinds in residential markets. Sungrow’s diversified utility-scale focus and global footprint provide more stability. Sungrow trades at a lower P/E than these peers historically commanded during their growth phases, despite showing more consistent recent performance.
• Vs. CATL/BYD (Battery Makers): While CATL and BYD are dominant in batteries, Sungrow’s focus on the power conversion and system integration layer offers a different risk/reward profile with potentially higher ROIC in the short term due to lower capital intensity in manufacturing cells.

6. Conclusion

Sungrow Power Supply is executing flawlessly on its strategy of global expansion and product diversification. The 1H25 results are not just a beat on numbers; they are a validation of the Company’s business model resilience. The emergence of the AIDC business adds a layer of excitement and long-term optionality that the market has yet to fully price in.

We believe the current valuation of ~15x 2025E P/E does not adequately reflect the Company’s growth trajectory, market leadership, and strategic pivots. With a target price of CNY 140.00, we see significant upside potential. We recommend institutional investors to accumulate shares on any weakness, viewing Sungrow as a cornerstone investment in the global energy transition and emerging AI infrastructure landscape.

Appendix: Detailed Financial Tables

Income Statement Forecast (CNY Million)

Balance Sheet Highlights (CNY Million)

Cash Flow Statement Highlights (CNY Million)

Key Financial Ratios

Disclaimer

This report is prepared by Soochow Securities Institute for institutional clients only. The information contained herein is based on sources believed to be reliable, but Soochow Securities does not guarantee its accuracy or completeness. The opinions expressed are subject to change without notice. This report does not constitute an offer or solicitation to buy or sell any securities. Investors should make their own independent decisions and consult with professional advisors if necessary. Soochow Securities and its affiliates may hold positions in the securities mentioned and may perform investment banking services for them. Past performance is not indicative of future results.