An apparatus for eliminating electrostatic charge from a mould, such as a wind turbine blade mould (2). The apparatus comprises heating wires (4) within the mould for heating a zone of a moulding surface of the mould (2), an electrical power supply circuit (14) connected to the heating wires (4), and an intermediate relay (26) of an electrostatic elimination circuit (16) connected between the heating wires (4) and the electrical power supply circuit (14). The intermediate relay (26) is switchable between a heating mode and a grounding mode selectively so as to and electrically connect the heating wires (4) to the electrical power supply circuit (14) in the heating mode or to electrical earth in the grounding mode. A method of eliminating electrostatic charge from a mould such as a wind turbine blade mould (2) is also disclosed.
