Core Viewpoint - The collaboration between Sunotec and Sungrow to deploy a 2.4GWh battery energy storage system in Bulgaria marks a significant breakthrough for Chinese energy storage technology in the Central and Eastern European market, enhancing the region's energy transition efforts [1][2]. Group 1: Project Overview - The partnership includes two types of projects: integrated photovoltaic and storage sites, and independent storage power stations, with some projects included in Bulgaria's national funding program "RESTORE" [2]. - The 2.4GWh storage capacity will increase Bulgaria's current storage capacity nearly fivefold, addressing issues related to photovoltaic output fluctuations and ensuring stable power supply during peak demand [2]. - Sungrow will provide its PowerTitan 2.0 storage system and inverters, which are well-suited for Bulgaria's extreme climate conditions [2]. Group 2: Market Dynamics - Bulgaria's "RESTORE Plan," launched in 2023 with a budget of €1 billion, supports renewable energy and storage integration projects, offering up to 30% investment subsidies for qualifying projects [2]. - Central and Eastern Europe is emerging as a new investment hotspot for energy storage due to abundant solar resources and urgent storage needs, driven by the EU's renewable energy targets [3][4]. Group 3: Global Market Position - Chinese energy storage companies are gaining market share globally, with 43% of new storage projects in 2024 utilizing solutions from Chinese firms, and Sungrow holding a 16.7% market share, ranking second worldwide [5]. - The successful implementation of the Bulgaria project reflects the comprehensive competitiveness of the Chinese energy storage industry, which spans from battery cells to system integration [5]. - The collaboration exemplifies the need for cross-border cooperation in energy transition, combining Chinese manufacturing capabilities with European market demands [5].

Core Viewpoint - Sunotec has signed an agreement with Sungrow to deploy a 2.4GWh energy storage system in Bulgaria and other European markets, marking Sungrow's entry into the Bulgarian market for energy storage technology [1][3]. Group 1: Project Details - The project includes both independent power stations and hybrid solar-storage power stations, with some projects receiving support from Bulgaria's national funding program RESTORE [1]. - Sungrow will provide the PowerTitan 2.0 energy storage system and inverters, which will be integrated with Sunotec's project portfolio [1]. Group 2: Strategic Importance - Sunotec's CEO emphasized that the collaboration reflects a shared vision for leading a new chapter in clean energy [3]. - Sungrow's regional director highlighted that this partnership is a crucial step in accelerating the deployment of clean energy in Bulgaria and Europe [3]. Group 3: Market Expansion - Sunotec's agreement aligns with its strategy to transition towards flexible and storage-based photovoltaic infrastructure, having built over 11GW of photovoltaic projects to date [4]. - Since 2025, Chinese energy storage companies have shown strong momentum in expanding overseas, with Europe being a key market, accounting for 12% of the global outbound orders from Chinese storage companies, which exceeded 22GWh in the first half of 2025 [4]. Group 4: Additional Projects - Sungrow has secured one of the largest energy storage projects in Latin America, utilizing the PowerTitan 2.0 liquid-cooled battery storage system [5]. - In the commercial storage sector, Sungrow has established a strategic distribution partnership with PM Service S.p.A. in Italy, which includes the purchase of 100 PowerStack commercial liquid-cooled storage systems [5]. - Sungrow has signed a letter of intent for the Red Sands BESS project in South Africa, providing a 153MW/612MWh project with the PowerTitan 2.0 system and a 15-year service agreement [6].

Investment Rating - The report upgrades the company's rating to "Buy" based on its strong growth prospects and attractive valuation, with a projected PE of 12 times for 2025 [10]. Core Views - The company is a leading player in the global inverter and energy storage market, with significant brand and technological advantages, and a strong overseas market presence. The core concern affecting the company's stock price is the sustainability of energy storage unit profitability, which has led to a long-term suppression of valuation and expectations. However, global energy storage demand is expected to continue to grow, and the company's energy storage gross margin is anticipated to recover to normal levels in the second half of this year, remaining above market expectations [1][3][10]. Summary by Sections Historical Performance - The company's stock price has experienced three phases since its listing. From 2011 to 2018, the main business was in inverters and EPC for power plants, heavily reliant on domestic photovoltaic subsidy policies. From 2019 to 2021, the company rapidly expanded its overseas inverter market share due to IGBT shortages and the pandemic, leading to significant stock price increases. Since 2022, the energy storage business has emerged as a second growth curve, with its output and profitability exceeding expectations, driving the stock price to outperform the photovoltaic index [2][19][20]. Current Situation - The energy storage business has become the core contradiction affecting the company's ROE and stock price. The inverter business has stabilized, with steady gross margins, while energy storage profits have significantly increased in recent years. The gross margin for energy storage is expected to improve due to the decline in lithium carbonate prices, but profitability per watt is projected to decline as the impact of lithium price decreases weakens [3][44]. Future Outlook - The company has sufficient orders on hand, with demand expected to grow rapidly in regions outside of the US and China, including Europe, the Middle East, South America, and Southeast Asia. The energy storage business is projected to ship 25-30 GWh in 2024, with global energy storage demand growth expected to reach 40-50% by 2025. The inverter business is expected to grow at around 10% annually, while the hydrogen energy business is anticipated to become a third growth curve [10][9][10]. Financial Projections - The company is expected to achieve revenues of 813.81 billion, 981.61 billion, and 1,108.91 billion yuan from 2024 to 2026, with net profits of 108.9 billion, 127.07 billion, and 140.19 billion yuan, corresponding to PE valuations of 13.69, 11.73, and 10.64 times [10].