Changsong Electric Showcases at the 18th Guangzhou International Solar PV & Energy Storage Exhibition
In September, the global spotlight on the solar PV and energy storage industries once again turned to Guangzhou. From September 16 to 18, 2026, the 18th World Solar Photovoltaic & Energy Storage Expo (PV Guangzhou 2026)—held under the theme "Eighteen Years of Dedication: Forging a Global Hub"—kicked off in grand style at Area B of the Canton Fair Complex. Changsong Electric, a specialist deeply rooted in the field of new energy grid-connection and power distribution, participated in the expo. The company showcased core products such as PV grid-connection cabinets, combiner boxes, and prefabricated equipment cabins, alongside comprehensive grid-connection solutions for diverse application scenarios, joining industry peers from over 100 countries at this highly influential flagship event for the solar and energy storage sectors in the Asia-Pacific region.
I. Exhibition Highlights: A world-class stage spanning 180,000 square meters—the global solar and energy storage hub embarks on a new journey.
Hosted by Guangdong Grandeur International Exhibition Group, this expo has evolved over 18 years of dedicated development into a highly influential flagship event for the solar and energy storage industry in the Asia-Pacific region. Spanning an exhibition area of 180,000 square meters, the event brings together over 2,000 leading domestic and international enterprises and is expected to attract more than 250,000 professional visitors and buyers from over 100 countries and regions worldwide.
On the opening day, the exhibition venue was bustling with activity, drawing a total of over 130,000 visits from industry professionals; booths were thronged with a steady stream of inquirers. By deeply integrating global procurement resources in the new energy sector, the event attracted more than 6,800 international professionals from over 100 countries and regions on day one alone, including key buyer groups such as international system integrators, EPC contractors, distributors, investment institutions, and major overseas purchasers.
The exhibition showcases a comprehensive array of innovative products and solutions spanning the entire industry ecosystem—from upstream silicon materials and wafers to high-efficiency cells and modules, inverters, energy storage cells, system integration, and integrated PV-storage-charging systems. Cutting-edge technologies and practical solutions—such as high-efficiency PV cell technologies (TOPCon, HJT, and perovskite), long-duration energy storage systems, liquid-cooled storage technology, and AI-driven smart energy O&M—are prominently featured, vividly demonstrating the latest advancements in the evolution of integrated PV and energy storage technologies.
II. Changsong Electric’s booth draws a massive crowd; professional explanations keep visitors engaged.
On the morning of the opening day, the Changsong Electric booth—situated in the exhibition hall's prime area—drew a steady stream of enthusiastic inquiries. The physical units on display—neatly arranged photovoltaic grid-connection cabinets, grid-connection boxes, and combiner boxes—attracted numerous industry professionals who paused to examine them closely.
“"What is the response time for the anti-islanding protection in this grid-connection cabinet?" asked a project manager from a local Guangdong-based PV EPC firm, getting straight to the point. The on-site technician immediately opened the cabinet door and, pointing to the internal anti-islanding protection unit, explained: "Our grid-connection cabinet fully complies with national standards; it reliably disconnects within two seconds of a grid power loss. Furthermore, it utilizes a dedicated hardware protection device rather than relying on makeshift inverter software. We have all the necessary CQC certifications and type-test reports, so you won't have to worry about the power utility's acceptance inspection." The project manager nodded, promptly took a photo of the component layout inside the cabinet, and added the technician on WeChat to arrange a follow-up discussion on specific project plans after the exhibition.
“"What is the maximum number of input channels this combiner box supports, and what is its protection rating?" asked another overseas buyer from Southeast Asia, inquiring in detail while standing before the display unit. A staff member explained: "Our PV DC combiner boxes offer configurable input options ranging from 4 to 24 channels. The outdoor models feature an IP65 protection rating and come standard with components from CHINT and Delixi. Internally, they are equipped with multiple layers of protection—including specialized PV fuses, circuit breakers, and surge protection devices—making them fully suitable for the high-temperature, high-humidity environments found in Southeast Asia." The buyer showed keen interest in the product's lightning and corrosion protection designs, asked for details regarding export certifications and lead times, and left their contact information.
"For a 1,000 kW commercial and industrial project, which grid-connection cabinet do you recommend? What is the approximate price?" asked a distributed PV investor from Jiangsu while inquiring about the CSGGD PV grid-connection and metering cabinet. Based on the project's capacity, the on-site representative provided a detailed explanation regarding the selection of the cabinet's rated current, the configuration of anti-reverse power flow functions, and the metering scheme, while also offering preliminary configuration recommendations. The investor noted that, having compared several suppliers, they found Changsong Electric’s configuration for anti-islanding protection and bi-directional metering to be superior, and expressed a willingness to discuss further details regarding a potential partnership.
At one corner of the booth, several international buyers from the Middle East showed keen interest in the prefabricated modular units and step-up box-type substations. Through an interpreter, they inquired in detail about the products' ingress protection ratings, operating temperature ranges, and maritime packaging solutions. After the staff provided comprehensive answers, the buyers indicated they would take the product information back home for technical evaluation and agreed to follow up via email.
Throughout the exhibition, the Changsong Electric booth drew a steady stream of visitors. Inquiries came from a diverse range of groups, including domestic PV EPC contractors, owners of industrial and commercial projects, overseas system integrators, and industry distributors. On-site technical and sales teams worked in tandem—explaining product specifications and technical advantages while noting down specific project requirements—keeping the booth’s discussion area almost constantly occupied. Following detailed consultations, many clients expressed a clear intent to collaborate right then and there, arranging for technical proposals and formal quotations to be sent after the exhibition.
According to the on-site representative from Changsong Electric, customer inquiries at the exhibition focused primarily on three areas: first, anti-islanding protection and compliance with grid-connection acceptance standards—a critical prerequisite for the successful grid integration of photovoltaic projects; second, the selection of rated current for grid-connection cabinets and the configuration of anti-reverse power functions, with customers generally concerned about accurately matching equipment to project capacity; and third, product lead times and customization capabilities, as many overseas clients have specific requirements regarding export certifications and packaging/shipping solutions. The Changsong Electric team provided professional, detailed responses to these frequently raised issues, along with preliminary equipment selection advice and indicative quotes, earning widespread recognition from customers.
III. Changsong Electric Exhibition: Focusing on Grid-Connected Power Distribution for New Energy and Serving the Global Market
Changsong Electric Co., Ltd. is a specialized enterprise integrating R&D, production, and sales of complete sets of low-voltage electrical equipment and electrical components. Headquartered in the Xinguang Industrial Zone of Liushi Town, Yueqing City, Wenzhou, Zhejiang Province, the company was established in 2011. It has received various honors and certifications over the years and was recognized as a National High-Tech Enterprise in 2025.
The company independently develops and manufactures a comprehensive range of products, including specialized photovoltaic (PV) circuit breakers, PV AC/DC combiner boxes, power distribution cabinets, large-scale PV grid-connection cabinets, grid-connection boxes, prefabricated equipment enclosures, and PV lightning protection devices. With a complete product portfolio, the company addresses the entire value chain of PV power plants—spanning from DC-side combining and protection to AC-side grid connection and distribution—and offers flexible solutions adaptable to diverse application scenarios, such as residential distributed PV, commercial and industrial rooftop systems, and large-scale ground-mounted power plants.
Regarding market presence, Changsong Electric has established offices and service centers in key domestic regions—including Guangdong, Hebei, Shandong, and Sichuan—thereby building a localized service network that covers major photovoltaic markets across the country. Internationally, the company’s products are exported to numerous countries and regions, consistently contributing the strength of Chinese manufacturing to the global green energy transition. Its participation in the Guangzhou exhibition marks a strategic move to deepen its engagement with the South China market while leveraging the region as a global hub for solar and energy storage trade.
IV. Key Exhibits: Focusing on grid-connection solutions for all photovoltaic application scenarios
At this exhibition, Changsong Electric highlighted the following core products:
1. CSJXF Single-phase/Three-phase Grid-connection Box (including meter position)
Primarily designed for residential distributed PV and small-scale commercial/industrial PV systems, this product is installed in series between the grid-tied inverter and the utility grid. It features comprehensive protection functions—including anti-islanding protection, voltage-check-based closing, undervoltage tripping, overvoltage/undervoltage protection, input lightning protection, system overcurrent protection, and grid isolation—while enabling precise energy metering, power transmission, and intelligent operational control.
2. CSGGD Photovoltaic Grid-Connected Metering Cabinet
Designed for high-power (100 kW–2000 kW) commercial and industrial grid-tied PV systems, this unit is installed between the grid-tied inverter (or AC combiner box) and the utility grid. It features a multifunction meter display and fault status indicators, providing a clear view of system operating conditions and facilitating daily operation and maintenance.
3. CSPV-DC PV DC Combiner Box
When applied to photovoltaic power generation systems, it effectively reduces the cabling required between PV modules and inverters. The use of multiple protection measures—including specialized PV fuses, circuit breakers, and surge protection devices—enhances system reliability and facilitates maintenance.
4. Prefabricated Cabin and Step-up Box-type Transformer
For large-scale ground-mounted power plants and commercial & industrial distributed projects, Changsong Electric provides integrated solutions such as prefabricated PV cabins and step-up box-type substations; these products offer advantages including ease of installation, high reliability, and comprehensive certifications.
V. Significance of Participation: Anchored in the Greater Bay Area, Connecting Global Solar and Energy Storage Trade
As a core engine city of the Guangdong-Hong Kong-Macao Greater Bay Area and a key node of the "Belt and Road Initiative," Guangzhou serves as a pivotal hub for Chinese photovoltaic and energy storage products to enter global markets. Leveraging the strategic advantages of the Greater Bay Area and adopting a global perspective, this expo brings together top-tier industry associations, international buyers, research institutions, and leading enterprises across the industry chain, thereby facilitating a two-way flow that enables domestic production capacity to go global while allowing overseas technologies to take root locally.
Changsong Electric’s participation in the Guangzhou Solar & Energy Storage Expo underscores the strategic importance the company places on both the South China and overseas markets. Leveraging this platform, Changsong Electric engaged in in-depth discussions and networking with global photovoltaic industry experts, power plant investors, EPC contractors, system integrators, and international buyers, further showcasing its one-stop solution capabilities and end-to-end technical support services in the field of grid-connected new energy power distribution.
Changsong Electric will continue to deepen its presence in the field of grid-connected photovoltaic power distribution, safeguarding the grid-connected operation of PV power plants worldwide with safe, reliable, and efficient products and services, while contributing to the high-quality development of green energy.
Changsong Electric — Your Preferred Partner for Grid-Connected PV Power Distribution Solutions
Changsong Electric Co., Ltd. is a national high-tech enterprise (certified in 2025) integrating R&D, production, and sales. Headquartered in the Xinguang Industrial Zone of Liushi Town, Yueqing City, Wenzhou, Zhejiang Province, the company has—since its inception in 2011—remained dedicated to deep technical development and product innovation within the field of grid-connected power distribution for new energy.
Core Product Portfolio:
- PV Grid-Connection Cabinets/Boxes: This range includes residential single-phase and three-phase grid-connection boxes (with integrated metering slots) and commercial/industrial GGD PV grid-connection metering cabinets. They feature comprehensive functions such as anti-islanding protection, over/under-voltage protection, lightning protection, and bi-directional metering, while supporting remote monitoring and intelligent dispatching.
- PV DC Combiner Box: Available with 4 to 24 input channels; IP65 protection rating (outdoor type); equipped with standard CHINT/DELIXI components; certified by CQC and backed by type test reports; meets grid-connection acceptance requirements of power supply bureaus.
- Prefabricated E-houses and Step-up Box-type Substations: Offering integrated grid-connection and step-up solutions for large-scale ground-mounted power plants and C&I distributed projects, featuring easy installation and high reliability.
- Associated electrical components include automatic reclosers, air circuit breakers (ACBs), molded case circuit breakers (MCCBs), over/under-voltage protection devices, and earth leakage protection switches; complete anti-reverse flow solutions are also available.
Key Advantages:
- ✅ Fully Certified: The products hold CQC and CE certifications as well as ISO9001 quality management system certification, meeting the grid-connection acceptance requirements of power supply bureaus across the country.
- ✅ Flexible solutions: Non-standard customization services are available to meet specific requirements regarding project capacity, grid-connection voltage, protection ratings, and more.
- ✅ One-stop integrated solution: From combiner boxes and grid-connection cabinets to step-up transformer substations, the entire product series features unified design and warranty, ensuring seamless compatibility of protection settings and communication protocols across all components.
- ✅ Service Network: Operations span the entire country, with branches and offices established in regions such as Zhejiang, Jiangsu, Anhui, Guangdong, Hebei, Shandong, and Sichuan. After-sales service teams are deployed nationwide, providing comprehensive technical support that covers everything from model selection and design to grid-connection acceptance.
Contact us:
- Company Address:No. 20, Yiheng Road, Xinguang Industrial Zone, Liushi Town, Yueqing City, Zhejiang Province
- Official Website:www.cncsele.com
- Product Inquiries: Please feel free to contact us by phone or online; we will provide a preliminary technical proposal and a reference quote within two hours.