What do the warranties of solar panel manufacturers say about solar panel cleaning? Clean Solar Solutions Ltd take great pride in giving correct and accurate information to clients about our solar panel cleaning service. There is much discussion as to whether solar panels are self-cleaning or not. Below, we quote directly from a number of the UK’s best-selling solar panel manufacturers manuals. Please note their advice about solar panel cleaning, the frequency of solar panel cleaning, how to clean solar panels and how it may affect your warranty.
Panasonic: Some maintenance is recommended to maintain optimal output performance of the solar modules. • If the module surface becomes dirty, it may reduce output power.
Yingli Solar: This manual contains important information pertaining maintenance of PV modules, and contains safety information that you must read carefully and be familiar with before maintaining Yingli Solar PV modules. Over time dust and dirt can accumulate on the glass surface of a module, reducing its power output. Yingli Solar recommends periodic cleaning of PV modules to enable maximum power output. Water with high mineral content may leave deposits on the glass surface and is not recommended. In order to avoid module damage, do not clean PV modules with a power washer or pressure washer. Do not use steam or corrosive chemicals to facilitate the cleaning of modules. Failure to comply with these requirements may adversely affect the PV module performance. Failure to comply with the requirements listed in this manual will invalidate the Limited Warranty for PV Modules as provided by Yingli Solar at the time of sale to the direct customer.
Schott & Sharp: If dirt
Solbian: Keep the panel clean. In a marine environment, wash the panel often with fresh water to avoid salt build up and reduce the possibility of damage.
Trina Solar: System performance and reliability can be improved by taking some simple steps. Maintenance should be carried out at least once a year. The amount of electricity generated by a solar module is proportional to the amount of light falling on it. A module with shaded cells will produce less energy
Suntech: To ensure optimum module performance, Suntech recommends the following maintenance measures: • Clean the glass surface of the module when required. Caution: observe solar manufacturers’ maintenance instructions for all components.
Romag: As a minimum requirement PV modules should be inspected annually. Accumulated dust and dirt can be removed from the surface of the PV module by washing gently with water. Do not use solvents or abrasive cleaners on any part of the PV module.
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