One of the problemsof photovoltaic solar panels, which created hostilitybetweenthe professionals ofthe building industry, it is theirdark colordue to the presenceof the cellsand connectionsthat arein the offing.Reasonfor whichare oftenunsightlyandtoo much incontrast with the colorsandthe styleusuallyusedfor buildings.After all we knowthat often thegoodcan not betoonice. A recent discovery, however, could subvertthis maxim. CSEM, a Swiss companyprivateand non-profitthat deals withapplied research,focusedin the directionof sustainability,has discovered theway to achieve theimpossible: build whites solar panelsthat reflectmost of the light, which goes againstthe normal operationof the solar cells. This is duetoanano-technology that allows solar cellsto convertinfrared radiationinto electrical energyanda selectivefilterdiffusiondispersesthe entire spectrum ofvisibleduring the transmissionof the infrared. It can be appliedonanexisting panelor go tocompose a newformand take place onflat or curved surfaces. The possibilities arevaried: in addition to whitecustomizationsare providedalsowith other colors, thereby generatinga variety thatcanbe expendedto increasethe attractiveness in terms of design, of the product.