Roof-mounted solar panels are essentially self-cleaning, <a href=http://www.lacerveteka.es/index.php/noticias/item/9-titulo-de-la-noticia-numero-3>http://www.lacerveteka.es/index.php/noticias/item/9-titulo-de-la-noticia-numero-3</a> as rainfall may help clear the mud off the system.
