FAQs - Ocean Solar Co., Ltd.




1.What are ocean solar's module products and what applications are they suited for?

Ocean solar has four series of solar module products: M6 series, M10 series, M10 N-TOPCON series, G12 series. M6 is a monofacial product of the 166*166mm cells, and is mainly used on industrial, commercial and residential roofs. M6 bifacial modules are mainly used in ground-mount power plants. M10 is mainly for large ground-mount power plants. M10 TOPCON & G12 is also suitable for large ground-mount power plants, especially in areas with high albedo, high temperature and high balance of system (BOS) costs. M10 TOPCON module can contribute to significant LCOE reductions.

2.Why does ocean solar choose 182 mm wafer size in the design of M10 series and M10 TOPCON series?

Ocean solar analyzed various boundary conditions involved in module manufacturing and system applications, from production feasibility, module reliability, application compatibility to transportation and manual installation, and finally determined that 182 mm silicon wafers and modules were the best configuration for large-format modules. For example, during transportation, the 182 mm module can maximize the use of shipping containers and reduce transportation costs. We believe that the size of a 182 mm module does not have major mechanical load and reliability consequences, and any increase in module size may bring reliability risks.

3.What type of module is better for my application, monofacial or bifacial?

Bifacial modules are slightly more expensive than monofacial modules, but can generate more power under the right conditions. When the rear side of the module is not blocked, the light received by the rear side of the bifacial module can significantly improve energy yield. In addition, the glass-glass encapsulation structure of the bifacial module has better resistance to environmental erosion by water vapor, salt-air fog, etc. Monofacial modules are more suitable for installations in mountainous regions and distributed generation rooftop applications.

4.How does ocean solar guarantee module supply?

Ocean solar has 800WM module production capacity in the industry, with more than 1 GW in its integrated capacity network fully guaranteeing the supply of modules. In addition, the production network facilitates the global distribution of modules with the help of land transportation, railway transportation and sea transportation.

5.How does ocean solar ensure module product quality?

Ocean solar's intelligent production network can guarantee the traceability of each module, and our highly automated production lines feature end-to-end inspection and analysis processes to ensure that each module meets the highest quality standards. We select module materials according to the highest standards, with the requirement that all new materials be subject to extended qualification and reliability tests before being incorporated into our products.

6.How long is the warranty period of ocean solar modules? How many years can efficient power generation be guaranteed?

Ocean solar modules have a general warranty of 12 years. Monofacial modules have a 30-year warranty for efficient power generation, while bifacial module performance is guaranteed for 30 years.

7.What documents should be provided to customers on procurement of modules?

Any distributed modules marketed by us will be accompanied by certificates of conformity, inspection reports and shipping marks. Please ask truck drivers to provide certificates of conformity if no such certificates are found in the packing case. The downstream customers, who have not been provided with such documents, should contact their distribution partners.

8.How much energy yield improvement can be achieved by bifacial PV modules?

Energy yield improvement achieved by bifacial PV modules compared to conventional modules depends on ground reflectance, or albedo; the height and azimuth of the tracker or other racking installed; and the ratio of direct light to scattered light in the region (blue or gray days). Given these factors, the amount of improvement should be assessed based on the actual conditions of the PV power plant. Bifacial energy yield improvements range from 5--20%.

9.How are the energy yield and installed capacity of modules calculated?

The energy yield of module depends on three factors: solar radiation (H--peak hours), module nameplate power rating (watts) and system efficiency of system (Pr) (generally taken at about 80%), where the overall energy yield is the product of these three factors; energy yield = H x W x Pr. The installed capacity is caculated by multiplying the nameplate power rating of a single module by the total number of modules in the system. For example, for 10 285 W modules installed, the installed capacity is 285 x 10 = 2,850 W.

10.Will the energy yield be influenced by installation via perforation and welding?

Perforation and welding are not recommended as they may damage the overall structure of the module, to further result in a degradation in mechanical loading capacity during the subsequent services, which may lead to invisible cracks in modules and therefore affect the energy yield.

11.How do you deal with fractures, scratches, hot spots, self-shattering and bubbles in certain parts of the modules?

Various abnormal conditions may be found throughout the life cycle of modules, including those arising from manufacture, transportation, installation, O&M and use. However, such abnormal conditions can be controlled effectively as long as Grade A products of LERRI are purchased from official suppliers and products are installed, operated and maintained according to the instructions provided by LERRI, so that any adverse effect on the reliability and energy yield of PV power plant can be prevented.

12.Is there any difference between a black or silver module frame?

We offer black or silver frames of modules to meet customers' requests and the application of the modules. We recommend attractive black-frame modules for rooftops and building curtain walls. Neither black nor silver frames affect the energy yield of the module.

13.Does ocean solar offer customized modules?

Customized module are available to meet the special demands of customers, and are in compliance with the relevant industrial standards and test conditions. During the sales process, our salespersons will inform customers of the basic information of the ordered modules, including mode of installation, conditions of use, and the difference between conventional and customized modules. Similarly, agents will also inform their downstream customers of the details about the customized modules.