Wind turbine serrations with upstream extension

A trailing edge panel (100) configured to be attached to a trailing edge of a wind turbine blade (10), the trailing edge panel comprising:

• a base element (101) comprising:
• an attachment part (120) configured to be attached to and extend from the trailing edge (20) of the wind turbine blade and to an upstream position on a first blade side (11) of the wind turbine blade;
• and
• a serrated part (130) extending from the attachment part (120) and being configured to project out from the trailing edge (20) of the wind turbine blade, wherein the serrated part (130) comprises a plurality of serrations, including a first serration and a second serration;
• and
• a number of protruding aerodynamic elements (110), including a first protruding aerodynamic element, comprising:
• a first protruding part (111) attached to the serrated part (130) of the base element (101);
• and
• a second protruding part (112) extending from the first protruding part (111) towards the attachment part (120) at an inclined angle (113) relative to the base element (101) and being configured to be attached to and extend along a second blade side (12) of the wind turbine blade.