Oree Solar 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.

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 Oree Solar are purchased from official suppliers and products are installed, operated and maintained according to the instructions provided by Oree Solar, so that any adverse effect on the reliability and energy yield of PV power plant can be prevented.

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 calculated by multiplying the nameplate power rating of a single module by the total number of modules in the system. For example, for 10 pieces 550 W modules installed, the installed capacity is 550 x 10 = 5,550 W.

Energy yield improvement achieved by bifacial PV modules compared to conventional modules depends on ground reflectance; 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%.

Oree modules have a 12-year general warranty of products and a 25-year linear output warranty for P-type solar panels and 15-year product warranty and 30-year linear output warranty for N type solar modules.

Oree'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.

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.