A 
powder coating composition comprising an intimate mixture of at least one 
thermoplastic and / or thermosetting resin binder and optionally, at least one crosslinking agent and constituents conventional in 
powder coating compositions, such as, pigments, fillers and additives, comprising aluminum particles having a D50 in a range of 8 to 20 μm whereby the aluminum particles are treated with compounds selected from the group consisting of silica, (
meth)acrylic polymers, polyesters and 
wax; the 
powder coating composition provides coatings with a value of thermal 
emissivity in a range of 0.4 to 0.55 with total 
solar reflectance values in a range of 60 to 70% in the 
infrared (IR) and / or near IR (NIR) 
wavelength region of 0.3 to 2.5 μm, to minimize the heat transportation through a substrate coated by the 
powder coating composition, e.g., from a warm building to a colder environment.