A PV Plant Lasts 25 Years. Who Protects these years?

Recently, Typhoon Bavi has swept through many parts of China, bringing severe disasters to numerous regions. Summer is a period when extreme weather events such as thunderstorms and high temperatures occur frequently, posing serious threats to the electrical and fire safety of PV power plants.For renewable energy sites to withstand these challenges, not only must key components such as inverters deliver strong performance, but the quality of plant operation and management is equally important.Addressing O&M shortcomings and strengthening reliability throughout the entire life-cycle are not only essential capabilities for power plant owners, but have also become a new frontier for some system providers to expand their service scope and realize long-term value.<h2 style="text-align:left">Breaking traditional service boundaries and unlocking full lifecycle value</h2>“Everyone, take a close look here. This terminal connection has a loose contact issue, which can lead to abnormal temperature rise, overheating, and even fire hazards. The weeds underneath have also not been cleared in time and have accumulated together, making it very easy for a fire to spread.” Recently, during a dedicated fire safety training session for power generation group customers, a Sungrow engineer explained the situation in detail to the trainees.From late June to early July, addressing the fire risks faced by renewable energy sites during the high-temperature season, Sungrow organized multiple teams to provide frontline O&M personnel from renewable energy operators with systematic training on fire hazard inspections, equipment fault handling, emergency fire response, and other practical skills, helping to strengthen safety management capabilities at renewable energy sites.<img src="https://energyplanet.oss-cn-shenzhen.aliyuncs.com/uploads/images/20260720223227_5c39436d.webp" alt="1.png" style="width:898.44px;height:674.26px" loading="lazy" decoding="async" />(A Sungrow engineer demonstrates fire safety skills to trainees at the power plant site.)This refined approach to post-delivery services creates a clear distinction from many equipment suppliers in the market, whose service scope often ends with equipment delivery and project grid connection. The author has noticed that currently, the follow-up work of renewable energy sites, including potential risk inspections, fire safety management, and emergency fault response, is mainly handled by the O&M teams of power generation companies. However, these teams often rely heavily on outsourced personnel, whose technical expertise varies significantly, potentially leaving various safety risks unaddressed.Unlike many system providers that regard equipment delivery as the end of their service journey, Sungrow has continuously strengthened its full lifecycle service philosophy over the years, treating equipment delivery as the starting point of service. The company builds long-term value partnerships across multiple stages, including system design, grid connection, and plant operation, creating sustainable value throughout the entire project lifecycle.Industry professionals believe that Sungrow’s approach is to position full lifecycle services as a core competitive advantage. At its essence, the company is reshaping partnerships from the perspective of preserving and enhancing the value of energy assets. Rather than limiting itself to supplying individual equipment, Sungrow provides long-term support throughout the entire lifecycle of power plant operation and management.It is worth noting that Sungrow’s global network of international branches, local service centers, and localized on-site engineering teams provide strong support for delivering full lifecycle services and rapidly addressing various electrical and system failures across renewable energy sites in different regions. Meanwhile, by continuously collecting customer feedback and product insights through post-delivery services, Sungrow applies these learnings to product iteration and optimization, creating a positive cycle of “customer service → R&D advancement.”“Through a regular fire safety training mechanism, we hope to help customers build their own capabilities in risk identification and equipment management, shifting from passive fault repair to proactive risk prevention, and better unlocking the full lifecycle value of power plants,” said Wei Hailong, General Manager of China Region, Engineering and Technical Service Center at Sungrow.<h2 style="text-align:left">Hardware-Level Safety: The Foundation for Long-Term Reliability</h2>If Sungrow’s “post-delivery services” add an additional layer of protection to the safety of power plants throughout their entire lifecycle, then the robust safety performance of the equipment itself serves as the fundamental cornerstone for long-term safe and reliable operation. Only through the coordinated combination of “hardware-level safety + comprehensive long-term services” can a fully integrated and sustainable safety protection system be built.Currently, competition in the PV industry continues to intensify, with price wars becoming a major strategy for some companies to capture market share. Industry insiders have revealed that some equipment manufacturers simplify configurations of key components, such as inverter fire-resistant enclosures, insulation components, and arc detection modules, in order to reduce production costs and lower product prices. Although such cost-reduced equipment may have lower initial procurement costs, PV power plants typically have an operating lifecycle of up to 25 years. Safety risks such as insulation failure and DC short circuits can accumulate over time. Once a fire occurs, power generation companies may face multiple cost pressures, including equipment damage, power generation losses caused by downtime, and fire safety rectification expenses.Sungrow, however, has chosen a completely different approach. In its view, safety is the foundation of all value creation—it is the relationship between zero and one. Once the safety baseline is compromised, all other benefits become impossible to achieve. Therefore, Sungrow has always prioritized intrinsic equipment safety as the top priority in product development, implementing fundamental safety protection through redundant, multi-layer, and comprehensive DC-side protection designs to eliminate potential risks at the hardware source.Developed for applications such as river basin projects and offshore PV scenarios, the SG465HX string inverter is equipped with an upgraded Intelligent Shutdown 2.0 system. It adopts a dual-redundant circuit-breaking design combining mechanical switches and electronic switches, together with multiple protection technologies, including a full-range temperature sensing array, millisecond-level DC arc detection, all-condition surge protection, and 24/7 insulation monitoring.These technologies enable the inverter to accurately identify hidden faults such as abnormal temperature rises caused by loose terminal connections and reverse-connected modules, while cutting off faulty circuits within milliseconds. The inverter is also equipped with a flame-retardant isolation compartment and an integrated aerosol fire suppression structure, preventing fire propagation from both heat conduction and ignition sources.<img src="https://energyplanet.oss-cn-shenzhen.aliyuncs.com/uploads/images/20260720223543_3fa96d02.png" alt="2.png" loading="lazy" decoding="async" />(In a fire safety validation test, the Sungrow SG465HX inverter quickly activated over-temperature protection, while the reference inverter overheated and caught fire.)Meanwhile, Sungrow’s newly launched PowerMatrix matrix inverter, which has gained significant attention in the market, is also equipped with an industry-leading ten-layer DC-side safety protection architecture. Built on a PV-storage integrated native DC bus topology, it enables independent zone isolation of PV strings, energy storage units, and multiple grid connection points. Combined with Sungrow’s self-developed technologies, including excitation fuses, parallel arc detection warnings, and hierarchical insulation monitoring, the system provides all-weather, full-node, and comprehensive protection.When a DC fault occurs at any node, it can be independently isolated, preventing risks from spreading across modules in a chain reaction. This completely moves beyond the limitations of traditional equipment featuring “single-point protection and post-event remediation.”It is worth noting that when designing system safety solutions, Sungrow does not simply stack individual components. Instead, its safety architecture is developed and refined through tens of thousands of extreme-condition tests across diverse scenarios, including mountainous regions, deserts, river basins, and offshore environments. These rigorous validations cover harsh conditions such as sandstorm durability, full-load operation under high temperatures, fire simulation, and multiple fault scenarios, ultimately creating an active safety closed loop featuring “pre-event warning, millisecond-level disconnection, zone-based isolation, and self-extinguishing flame retardation.”Relying on the fundamental DC safety architecture of products such as the PowerMatrix matrix inverter and SG465HX, together with technical services throughout the entire lifecycle, Sungrow has built a safety ecosystem that integrates both software and hardware capabilities. By strengthening safety from both internal and external dimensions, the company helps customers address potential gaps in renewable energy site operation and management from multiple perspectives.<img src="https://energyplanet.oss-cn-shenzhen.aliyuncs.com/uploads/images/20260720223717_59a345a3.webp" alt="3.png" loading="lazy" decoding="async" />Speaking of the series of fire safety training programs recently carried out by Sungrow, one detail is particularly worth highlighting. Before the training sessions, the technical team specifically conducted on-site visits to PV power plants located in mountainous and forest areas. Based on these visits, they identified four major high-frequency causes of fire incidents: weed accumulation, loose terminal connections, blocked heat dissipation, and rodent damage and corrosion. The team then developed scenario-based fire prevention O&M manuals, standardized inspection records, and other practical materials. “In addition, during the training sessions, our technical engineers not only explained fire safety knowledge and operational procedures, but also shared the existing risks and hidden hazards discovered during the preliminary site visits, while providing corresponding rectification recommendations,” said Wei Hailong. It is clear that Sungrow did not turn this round of training into a mere formality or a superficial activity. Instead, the company has truly implemented the training in practice, ensuring that participants gain real skills and practical capabilities.On one hand, Sungrow maintains strict hardware safety standards during product development to avoid long-term safety risks caused by short-term pursuit of profits. On the other hand, it extends services throughout the entire lifecycle and actively participates in customers’ power plant safety management. Sungrow’s long-standing leadership position in the global power electronics conversion sector demonstrates a clear principle: amid intensified price competition in the industry, long-term commitment is becoming the core path for PV equipment companies to achieve differentiated growth.Facing the evolution toward a new power system, the long-term safe and stable operation of PV power plants is the foundation for sustainable industry development. By combining intrinsic equipment safety as the foundation and full lifecycle services as the key approach, system providers and power generation companies can jointly build comprehensive safety systems for renewable energy sites. Balancing short-term construction costs with long-term operational value may become the mainstream direction for companies seeking to successfully navigate industry cycles.

A PV Plant Lasts 25 Years. Who Protects these years?

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