Sunnova Files for Bankruptcy Protection Amidst Shifting Solar Market Dynamics

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Bankruptcy Protection Application by a Major Solar Company Valued at 43 Billion RMB

On May 15, 2025, it was reported that a leading solar company, which went public on the New York Stock Exchange in 2019 with a peak valuation of $6 billion (approximately 43 billion RMB), has applied for bankruptcy protection. The company, Sunnova, specializes in solar services, including solar energy system design, installation, and maintenance for residential properties, as well as solar system repair services. They also offer removal and reinstallation of solar panels during roofing repairs or replacements. Sunnova’s operational model is similar to that of domestic distributed photovoltaic installation and operation companies, focusing on installation and maintenance without venturing into manufacturing.

Intersolar Highlights TopCon Technology

On the same day, INGA showcased its advancements at the Intersolar event in Germany, reinforcing its position in the European market. The company received high recognition from customers in Germany and Italy for its high-power components tailored for residential photovoltaics. INGA is committed to its mission of producing only high-quality battery cells and plans to continue this focus in the future.

ABC Technology Leading the Zero Carbon Era

At the same event, LONGi Green Energy announced that its ABC battery achieved a production efficiency breakthrough of 27.2% and a component efficiency exceeding 25.2%, nearing the theoretical efficiency limit of monocrystalline silicon batteries. Innovations such as reducing the busbar width from 90 micrometers to 30 micrometers and optimizing the bifaciality to above 75% have significantly enhanced the energy output and adaptability of its ABC components. The latest “Navigator” smart components integrate inverter and digital gateway technologies, providing flexible solutions for residential, commercial, and large-scale power plant applications, thus offering superior lifecycle solutions to investors, owners, and installers.

Innovative Safety Standards at The Smarter E Europe 2025

Haidar showcased its hybrid electrolyte technology, which has achieved significant upgrades in safety standards, delaying thermal runaway triggers by over 40% and increasing trigger temperatures by more than 30°C. The world’s first 314Ah semi-solid-state battery has passed a 5mm puncture test, achieving “zero thermal runaway” under extreme conditions, while enhancing endurance by 25% for all-electric vessels. Modular design and smart cloud management in residential and balcony storage systems provide a cycle life of 7000 cycles at 80% state of health and charging efficiency exceeding 95%.

New Guidelines for Distributed Photovoltaics in Yancheng, Jiangsu

On May 13, 2025, the Yancheng Municipal Government in Jiangsu Province issued a notice to promote high-quality development of distributed photovoltaic projects, emphasizing strengthened project registration management. The guidelines stipulate that distributed photovoltaic projects must adhere to the principle of “who invests, who registers.” Individual homeowners can either have local power companies register on their behalf or register themselves. Non-individual projects must apply for registration directly with local administrative approval departments, with explicit prohibitions against construction before registration.

Comprehensive Energy Solutions at Intersolar Europe

CRRC Zhuzhou presented its all-scenario energy ecosystem at Intersolar Europe, showcasing a smart energy station that supports dynamic virtual power plant integration, transforming rooftop photovoltaics into a “zero-carbon printing machine.” Their micro-inverter clusters for residential use (10-30kW) feature an AI arc protection system for enhanced safety. The company also highlighted its 6.X energy storage system, designed for various applications, achieving over 38% increase in energy density and reducing investment costs by 20%.

Strategic Cooperation in Solar Storage Market

Hoymiles signed a strategic cooperation agreement with Runyang to deepen their collaboration in the solar storage market. Established in 2013, Runyang focuses on developing and manufacturing efficient solar products, with a production capacity of 63GW for batteries and 23GW for modules by the end of 2023. Their global manufacturing footprint continues to expand to support an integrated supply chain.

New Product Launches at Intersolar Europe 2025

SolarEdge announced significant growth in the residential and commercial markets in Africa and Oceania during its release event, showcasing the company’s global expansion milestones. Zhang Jiawei, General Manager of Sales and Solutions, provided insights into SolarEdge’s innovations, including a second-generation hybrid inverter with enhanced performance and user-friendly features for effective energy management.

Innovative Solutions from TBEA at Intersolar Europe 2025

The Intersolar Europe 2025 event officially opened, capturing the attention of the global renewable energy sector. TBEA presented comprehensive energy storage solutions focused on large power plants, commercial, and residential applications, emphasizing features like black start capability, integrated design for improved efficiency, and intelligent battery health management.