NOVELTY - The method involves providing a hybrid material mat (110) has several glass fibers roving (112) that is provided on a carbon fiber substrate (114). The roving is arranged on a first side (110a) of the mat. The carbon fiber substrate is arranged on a second side (110b) of the mat. Multiple hybrid material mats are arranged in a mould. The mats are infused with a resin. The resin is cured to form a portion of a wind turbine blade. The mat is provided as a dry fiber mat. The mat having carbon fiber tow (116) is provided for a potential equalization between the sides of the mat.    USE - Method of manufacturing portion of wind turbine blade (claimed).    ADVANTAGE - The handling and lay-up is made easy for the manufacture of wind turbine blade, by providing a single mat or material layer having a combination of glass and carbon fibers. The performance and compressive strength is improved by the arrangement of glass fiber roving on a carbon fiber substrate. The manufacturing of the material mat is made easy, by providing the glass fiber roving on top of a thin carbon fiber layer. The hybrid material is to be stored as rolls of fabric material and made easy for handling and storage, by providing the material mats as a flexible material. The wind turbine blades are generally designed for relatively long lifetimes and to withstand considerable structural and dynamic loading. The mat combines the properties of both glass and carbon fibers into a single material layer which is easily manufactured while balancing the total cost of the materials used in component manufacture. The occurrence of flash-over or sparking in the event of a lightning strike on the component is prevented which is a primary concern in the manufacture and use of components in wind turbine blades. The risk of a flashover is reduced between different conductive elements of the blades, by coupling the base of the carbon substrate sub-layers to a suitable lightning protection system. The lightning protection qualities of the finished wind turbine blades are improved, by making the mat construction for simple and effective potential equalization techniques.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of manufacturing a hybrid material mat.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the hybrid material mat.    Hybrid material mat (110)    First side of mat (110a)    Second side of mat (110b)    Glass fibers roving (112)    Carbon fiber substrate (114)