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Soiling

New model to predict PV module cleaning cycles and resulting profits

A group of scientists in Bangladesh has developed a model to determine the optimal cleaning schedule for a PV installation at any location in the globe, requiring only the average insolation and soiling rate for a given site to make the calculation. The study also draws new conclusions regarding the influence of sandstorms and rain on soiling, and aims to be among the first studies to paint a global picture of soiling trends by region.

Active self-cleaning tech for PV modules

An international research team has developed a cleaning system for solar panels that combines a vibrating device with the use of hydrophilic curved rungs. The technique is claimed to be able to remove the surface contaminants through the internal flow of vibrating water droplets applied with a pipette onto the module surface and transported, under vibration, to the contaminated parts.

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Anti-soiling nanocoating for large-scale PV

Dutch company Rads Global Business has developed an anti-soiling coating for solar PV modules that is claimed to reduce cleaning cost by around 60%. The anti-reflective and anti-corrosive coating is also said to mitigate potential-induced degradation (PID).

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Getting serious about soiling

Scientists in the United States and India are investigating the impacts of soiling on PV installations in the Indian state of Gujarat. The group, which found that soiling losses for the state could add up to $12 million per year, is looking for low-cost ways to monitor and reduce the impacts of soiling on modules in the field.

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Exclusive interview – Jinko Power on how it offered the world’s lowest solar power price

pv magazine’s Amjad Khashman has spoken to Chinese solar developer Jinko Power about negotiating the world record low price tariff agreed for electricity generated at the Al Dhafra solar project in Abu Dhabi.

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Assessing the soiling mitigation properties of anti-reflective coatings

Researchers in China have sought to understand how soiling exacerbated by anti-reflective coatings might inhibit solar panel output. In terms of effectiveness against soiling, the scientists found hollow-silica-nanoparticle coatings did better than solid silica alternatives.

A new device to detect PV panel failure

A Spanish start-up has developed a system which offers automated fault detection in solar panels at any scale.

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How much dust is enough?

A U.K. study has identified 13 soiling agents with differing effects on light transmittance. Researchers found some dust particles were able to degrade photovoltaic performance by as much as 98%.

Where there’s smoke… there’s reduced PV output

A minor concern it may be, compared to the tragic loss of life, livelihoods and biodiversity caused by the bushfires still ravaging parts of Australia, but reduced output by PV systems due to smoke haze is an unwelcome bi-product of blazes that have burned at a scale and ferocity never seen before.

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Another one fights the dust

Scientists from Israel have used nanowires to detach particles from the surfaces of solar panels. The proposed microscopic self-cleaning technology is said to raise the efficiency of particle removal with hydrophobicity.

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