Equity Research: Sungrow Power Supply (300274.SZ)

Date: August 28, 2025
Analysts: Liu Xingwen (SAC: S0340522050001), Su Zhibin (SAC: S0340523080001)
Rating: BUY (Maintained)
Current Price: CNY 95.11
Target Valuation Context: 2025E P/E ~16x

Executive Summary

Sungrow Power Supply Co., Ltd. ("Sungrow" or the "Company") has released its interim financial results for the first half of 2025 (1H25), delivering a performance that significantly exceeds market expectations and underscores its dominant position in the global renewable energy infrastructure sector. The Company reported robust top-line growth driven by strong demand across both its photovoltaic (PV) inverter and energy storage system (ESS) segments, coupled with notable margin expansion resulting from product mix optimization and operational efficiencies.

In 1H25, Sungrow achieved total revenue of CNY 43.53 billion, representing a year-over-year (YoY) increase of 40.34%. More importantly, net profit attributable to shareholders reached CNY 7.74 billion, surging 55.97% YoY. This outperformance in bottom-line growth relative to revenue highlights an improvement in profitability metrics, with gross margins expanding by 1.94 percentage points (pct) to 34.36% and net margins improving by 1.72 pct to 17.99%.

The core investment thesis remains anchored in three pillars:
1. Structural Growth in Energy Storage: The ESS business has evolved from a supplementary segment to a primary growth engine, with global shipments reaching record levels and high-margin products like the PowerTitan series gaining widespread adoption in mature markets.
2. Technological Moat & Product Leadership: Sustained high R&D investment (up 37% YoY) has yielded industry-first innovations, including the SG465HX string inverter and the 1+X 2.0 modular architecture, reinforcing Sungrow’s technological premium.
3. Global Diversification & Brand Strength: With over 20 overseas branches and presence in 100+ countries, the Company is successfully mitigating single-market dependency risks while capturing value in high-barrier markets such as Europe and the Middle East.

We maintain our BUY rating on Sungrow. Based on our updated financial models, we project EPS of CNY 6.09, CNY 6.96, and CNY 7.80 for 2025, 2026, and 2027, respectively. At the current price of CNY 95.11, the stock trades at approximately 16x 2025E P/E, offering an attractive entry point given the Company’s compounded annual growth trajectory and leading market share.

Key Takeaways

1. Financial Performance: Robust Growth with Margin Expansion

Sungrow’s 1H25 financial results demonstrate not only scale but also quality of earnings. The divergence between revenue growth (+40.34%) and net profit growth (+55.97%) indicates successful cost control and a shift towards higher-value product offerings.

Table 1: Key Financial Metrics – 1H25 vs. 1H24 & Q2 2025 Snapshot

Source: Company Reports, Dongguan Securities Research Institute

Quarterly Momentum:
The second quarter of 2025 (2Q25) continued this positive trend, generating revenue of CNY 24.50 billion and net profit of CNY 3.91 billion. The sequential stability and YoY acceleration suggest that demand headwinds often seen in seasonal dips were effectively managed through global order backlog execution.

Profitability Drivers:
* Product Mix Shift: The increasing contribution of the Energy Storage Systems (ESS) business, which typically commands competitive pricing power due to integrated solutions, has bolstered overall margins.
* Operational Leverage: As revenue scales, fixed costs are absorbed more efficiently. Additionally, the Company’s strategic supply chain management has mitigated raw material cost volatility.
* Financial Expenses: Notably, the forecast table indicates negative financial expenses in future years (e.g., -CNY 781 million in 2025E), suggesting significant interest income or forex gains, which further supports net margin expansion.

2. Strategic Pillar I: Energy Storage Systems (ESS) as the Primary Growth Engine

The ESS segment has transitioned into a cornerstone of Sungrow’s business model. In 2024, the Company shipped 28 GWh of storage systems globally, generating revenue of CNY 17.80 billion—a staggering 127.78% YoY increase. This segment now accounts for 40.89% of total revenue, up 15.69 pct year-over-year, signaling a fundamental structural shift in the Company’s revenue composition.

Product Innovation & Market Leadership:
In 1H25, Sungrow launched the PowerTitan 3.0 AC Smart Storage Platform, setting new industry benchmarks for energy density and safety:
* Flex Edition: 10ft container, 3.45 MWh capacity.
* Class Edition: 20ft container, 6.9 MWh capacity.
* Plus Edition: 30ft container, 12.5 MWh capacity.

The Plus Edition boasts an energy density exceeding 500 kWh/m², currently the highest in the global market. This is achieved through the integration of 684Ah stacked battery cells and Silicon Carbide (SiC) Power Conversion Systems (PCS). Furthermore, the platform incorporates advanced software suites:
* PowerBidder: AI-driven auxiliary decision-making software for electricity trading, crucial for merchant storage projects in deregulated markets.
* PowerDoctor: Intelligent O&M platform enhancing lifecycle management.

Safety Record & Application Scenarios:
Sungrow’s proprietary "AC/DC Integrated" 10MWh all-liquid-cooled storage system (PowerTitan 2.0) has seen widespread deployment. Crucially, zero safety incidents have been reported across all participated projects, a key differentiator in an industry where thermal runaway risks remain a primary concern for investors and utilities.

Key deployment examples include:
* Grid-Side: Taizhou Hailing Independent Storage Station, Shandong Taiyang Grid-Side Station.
* User-Side/Industrial: Kunshan Longten Special Steel, Wuhu Chery (first automotive industry storage station).
* International: Uzbekistan’s largest Central Asian storage station.

Additionally, the PowerStack 835CS, designed for 10/20 kV large industrial scenarios, is seeing batch applications in high-energy-consuming sectors such as steel, metallurgy, and chemicals, marking the onset of customized commercial and industrial (C&I) storage solutions.

3. Strategic Pillar II: PV Inverters & Technological Supremacy

While ESS grows rapidly, the PV inverter business remains the cash cow, benefiting from Sungrow’s relentless R&D focus. In 1H25, R&D expenditure totaled CNY 2.04 billion, a 37% YoY increase. This investment is directly translating into product leadership.

New Product Launches:
1. SG465HX: The world’s first string inverter with a power output exceeding 400 kW. This product addresses the needs of utility-scale projects seeking lower Levelized Cost of Energy (LCOE) through higher power density and reduced balance-of-system (BOS) costs.
2. 1+X 2.0 Modular Inverter: A global first in split-type modular architecture. This design allows for flexible configuration and easier maintenance, enhancing reliability in diverse environments.

These products form part of Sungrow’s "5A Fusion System Solution":
* All-weather Economy
* All-scenario Reliability
* All-link Safety
* Full-lifecycle Smart O&M
* All-grid-condition Grid-forming capability

Benchmark Projects:
* Amaala Project (Saudi Arabia): A landmark off-grid project for a ultra-luxury resort complex, featuring 165 MW of PV inverters and 160 MW/760 MWh of storage. This project exemplifies Sungrow’s ability to deliver complex, hybrid renewable solutions in harsh environments.
* Yunnan Diqing Huanneng Nagu Project: Operating at an altitude of 5,300 meters, this is the world’s highest-altitude PV station, proving the extreme environmental resilience of Sungrow’s hardware.

Residential & Distributed Solar:
Sungrow is also capturing the decentralized market. The newly released micro-inverter series is gaining traction in European balcony PV and home green energy scenarios. Coupled with the iHomeManager (home energy management system), Sungrow is creating a sticky ecosystem for residential users, emphasizing smart, simple, and efficient energy usage.

4. Globalization: Deepening Market Penetration

Sungrow’s globalization strategy has moved beyond simple export to deep local integration. The Company has established over 20 overseas branches and 60 representative offices, covering Europe, the Americas, Asia-Pacific, the Middle East, Africa, and China.

• Market Reach: Products are sold in over 100 countries.
• Supply Chain & Service: By localizing service and supply chains, Sungrow reduces lead times and enhances customer trust, particularly in critical infrastructure projects.
• Brand Equity: The successful delivery of high-profile projects (e.g., Amaala, Uzbekistan) reinforces the brand’s reputation for reliability and technical sophistication, allowing Sungrow to command a premium over lower-cost competitors.

Financial Forecast & Valuation

Earnings Predictions

Based on the strong 1H25 performance and the visible order book, we have refined our earnings estimates for 2025-2027. We anticipate sustained double-digit growth driven by the scaling of the ESS business and steady demand for PV inverters.

Table 2: Profit Forecast Summary (CNY Million)

Source: iFinD, Dongguan Securities Research Institute Estimates

Key Assumptions:
1. Revenue Growth: We project 2025 revenue to reach CNY 97.65 billion, driven by a 25%+ growth rate. This assumes continued strong ESS shipments (potentially exceeding 35-40 GWh annually) and stable PV inverter demand despite potential saturation in some mature markets.
2. Margin Stability: Gross margins are expected to remain resilient around 34-35% due to the high proportion of ESS sales and premium pricing on new tech products (SG465HX, PowerTitan 3.0).
3. Expense Control: While R&D spending will continue to rise in absolute terms to maintain technological leadership, operating leverage will help keep selling and administrative expense ratios in check.
4. Tax & Minority Interests: Effective tax rates and minority interest deductions are projected to remain stable based on historical averages and current corporate structure.

Valuation Analysis

As of August 27, 2025, Sungrow’s closing price was CNY 95.11, with a total market capitalization of CNY 197.18 billion.

• Current Valuation: The stock trades at approximately 15.6x 2025E P/E and 13.7x 2026E P/E.
• Peer Comparison: Compared to global peers in the renewable equipment space, Sungrow’s valuation is reasonable given its superior growth rate (expected >14% CAGR in net profit) and dominant market share. Many pure-play inverter manufacturers trade at similar or higher multiples despite slower growth trajectories.
• ROE Exceptionality: The reported TTM ROE of 3247% appears to be an anomaly likely driven by specific accounting adjustments or one-time equity changes noted in the data snapshot. However, looking at the forward earnings power, the fundamental return on equity remains robust, supporting the asset-light, high-turnover business model.

We believe the current multiple does not fully reflect the Company’s transition into a comprehensive "Smart Energy" platform provider, nor the recurring revenue potential from its software and O&M services (PowerBidder/PowerDoctor).

Risks / Headwinds

While the outlook is positive, institutional investors must consider the following risk factors that could impact future performance:

1. Downstream Demand Volatility

• Policy Dependency: The renewable energy sector is heavily influenced by government subsidies, feed-in tariffs, and carbon neutrality policies. Any rollback in support mechanisms in key markets (e.g., EU, US, China) could dampen installation rates.
• Grid Connection Bottlenecks: In many mature markets, grid infrastructure lag is becoming a bottleneck for new PV and storage connections. Delays in grid approvals could push revenue recognition into later periods.

2. Intensifying Competition & Margin Pressure

• Price Wars: The inverter and ESS markets are seeing increased participation from new entrants and traditional electrical giants. Aggressive pricing strategies by competitors could erode gross margins, particularly in the standardized string inverter segment.
• Technology Disruption: Rapid advancements in battery chemistry (e.g., solid-state batteries) or inverter topologies by competitors could render current product lines less competitive if Sungrow fails to maintain its R&D pace.

3. Geopolitical & Trade Barriers

• Tariffs & Trade Restrictions: As a global exporter, Sungrow is exposed to trade policies. Potential increases in tariffs in the US or Europe, or local content requirements, could increase costs or limit market access.
• Supply Chain Fragmentation: Geopolitical tensions may force a decoupling of supply chains, requiring costly duplication of manufacturing facilities or sourcing networks.

4. Currency Fluctuation Risk

• FX Exposure: With a significant portion of revenue generated overseas (in USD, EUR, etc.) and costs incurred in CNY, exchange rate volatility can materially impact financial results. While the Company employs hedging strategies, extreme currency swings can still affect reported earnings. The forecasted negative financial expenses suggest current hedging or forex positions are favorable, but this is a variable risk.

Rating / Sector Outlook

Sector Outlook: Overweight

The global energy transition is irreversible, with solar and storage becoming the marginal cost leaders in electricity generation. We maintain an Overweight view on the renewable equipment sector, specifically favoring companies with:
1. Integrated Solutions: Ability to bundle PV, Storage, and EV charging.
2. Global Footprint: Diversified revenue streams to mitigate regional policy risks.
3. Bankability: Strong balance sheets and brand recognition that allow access to low-cost capital and large-scale utility contracts.

Sungrow fits all three criteria perfectly. The sector is moving from a phase of "capacity expansion" to "quality and efficiency," where technological leaders like Sungrow will gain market share at the expense of smaller, less innovative players.

Investment Rating: BUY (Maintained)

We reiterate our BUY rating. The Company’s 1H25 results confirm its execution capability and strategic vision. The combination of high growth, improving margins, and strong cash flow generation provides a solid foundation for shareholder returns.

• Short-term Catalyst: Continued strong quarterly earnings beats and announcement of major international contracts (e.g., further expansions in Middle East/Americas).
• Long-term Catalyst: Monetization of software/services layer (virtual power plant capabilities) and dominance in the emerging residential storage market.

Investment View

Why Sungrow Remains a Core Holding

For institutional portfolios seeking exposure to the clean energy megatrend, Sungrow Power Supply represents a "best-in-class" asset. The investment case is no longer just about selling hardware; it is about providing the operating system for the new energy grid.

1. The "Second Curve" is Real and Profitable
Many investors worried that the ESS business would be a low-margin volume game. Sungrow has disproven this. The 1H25 data shows that ESS is contributing significantly to profit growth, not just revenue. The launch of PowerTitan 3.0 with its industry-leading energy density and integrated trading software (PowerBidder) positions Sungrow not just as a hardware vendor, but as a partner in energy arbitrage and grid stability. This software-defined hardware approach creates higher switching costs for customers and protects margins.

2. Resilience Through Diversification
Sungrow’s geographic diversification is a key risk mitigant. While some competitors are overly reliant on the Chinese domestic market (which faces intense price competition), Sungrow’s strong presence in Europe, the Middle East, and the Americas allows it to capture higher-margin opportunities. The success of the Amaala project and the Uzbekistan station demonstrates its ability to win in complex, high-specification international tenders.

3. R&D as a Defensive Moat
In an industry prone to commoditization, Sungrow’s CNY 2.04 billion H1 R&D spend is a defensive moat. The introduction of the 400kW+ string inverter and the 1+X 2.0 modular system ensures that Sungrow remains the technology leader. For utility-scale developers, choosing the most efficient and reliable equipment is paramount to project IRR; Sungrow’s track record of zero safety incidents and high availability makes it the default choice for risk-averse institutional developers.

4. Valuation Comfort Zone
At ~16x 2025E P/E, the stock offers a compelling risk-reward profile. It is priced for steady growth, but the optionality on upside—driven by faster-than-expected ESS adoption or breakthroughs in grid-forming technology—is not fully priced in. The projected decline in P/E to 12x by 2027 suggests that even if multiple compression occurs, earnings growth will support the stock price.

Strategic Recommendation

• For Long-Term Investors: Accumulate on dips. Sungrow is a foundational holding for any green energy portfolio. The structural tailwinds of decarbonization and electrification will drive demand for its products for the next decade.
• For Tactical Traders: Monitor quarterly gross margin trends and inventory levels. Any sign of margin stabilization above 34% should be viewed as a strong buy signal. Conversely, watch for any geopolitical headlines regarding trade tariffs in the US/EU as short-term volatility triggers.

Conclusion

Sungrow Power Supply has successfully navigated the transition from a pure-play inverter manufacturer to a global leader in integrated smart energy solutions. The 1H25 results are a testament to this transformation, showcasing robust growth, enhanced profitability, and technological leadership. With a clear path to sustained earnings growth, a dominant market position, and a reasonable valuation, Sungrow remains a top pick in the renewable energy sector. We advise investors to maintain or initiate positions with a BUY rating, targeting long-term capital appreciation aligned with the global energy transition.

Disclaimer: This report is based on information available as of August 28, 2025. The views expressed are those of the analysts and do not constitute individual investment advice. Investors should conduct their own due diligence and consult with financial advisors before making investment decisions. Past performance is not indicative of future results.