A wind turbine blade comprising a load carrying structure, a shell body and a lightning protection system, the wind turbine blade extending in a longitudinal direction between a root end and a tip end, wherein - the load carrying structure is made of a fibre-reinforced polymer material and comprises a plurality of stacked fibre layers having a thickness, the stacked fibre layers comprising electrically conductive fibres, such as carbon fibres, and wherein - the lightning protection system comprises: - a lightning receptor arranged freely accessible in or on the shell body, - a lightning down-conductor, which is electrically connected to the lightning receptor and is further configured to be electrically connected to a ground connection, and wherein - the wind turbine blade further comprises a potential equalisation system, which provides a potential equalising connection between a number of the electrically conductive fibres of the load carrying structure and the lightning protection system, characterised in that - the potential equalisation system comprises a dissipating element made of an electrically conductive material and which comprises a plurality of transverse connectors that are arranged so as to extend transverse through the thickness of the stacked fibre layers (74,76,78) and configured to dissipate energy into the plurality of said stacked fibre layers, wherein the dissipating element comprises a substantially planar element, and said plurality of transverse connectors extend from the substantially planar element, said planar element being connected via said potential equalising connection to the lightning protection system. - the load carrying structure is made of a fibre-reinforced polymer material and comprises a plurality of stacked fibre layers having a thickness, the stacked fibre layers comprising electrically conductive fibres, such as carbon fibres, and wherein - the lightning protection system comprises: - a lightning receptor arranged freely accessible in or on the shell body, - a lightning down-conductor, which is electrically connected to the lightning receptor and is further configured to be electrically connected to a ground connection, and wherein - a lightning receptor arranged freely accessible in or on the shell body, - a lightning down-conductor, which is electrically connected to the lightning receptor and is further configured to be electrically connected to a ground connection, and wherein - the wind turbine blade further comprises a potential equalisation system, which provides a potential equalising connection between a number of the electrically conductive fibres of the load carrying structure and the lightning protection system, characterised in that - the potential equalisation system comprises a dissipating element made of an electrically conductive material and which comprises a plurality of transverse connectors that are arranged so as to extend transverse through the thickness of the stacked fibre layers (74,76,78) and configured to dissipate energy into the plurality of said stacked fibre layers, wherein the dissipating element comprises a substantially planar element, and said plurality of transverse connectors extend from the substantially planar element, said planar element being connected via said potential equalising connection to the lightning protection system. - the potential equalisation system comprises a dissipating element made of an electrically conductive material and which comprises a plurality of transverse connectors that are arranged so as to extend transverse through the thickness of the stacked fibre layers (74,76,78) and configured to dissipate energy into the plurality of said stacked fibre layers, wherein the dissipating element comprises a substantially planar element, and said plurality of transverse connectors extend from the substantially planar element, said planar element being connected via said potential equalising connection to the lightning protection system.