With the growing awareness of the global warming and the limits to our fossil based fuels, the need to find better renewable source of energy is becoming apparent. The use of wind energy is a rapidly growing industry. Such installation are generally located on open and elevated terrain and as such present attractive capture points for lightning discharges. If reliable supply is to be maintained it is important that sources of over-voltage damage are mitigated. HAKEL Ltd. provides an extensive range of surge protection devices suited to both direct and partial lightning currents.