Will solar panels survive an electromagnetic pulse event?

EMP Effects on Solar Panels

Solar panels are made of silicon and other non-metallic materials, which are less susceptible to damage from EMP. However, the electronics within the inverter and other components can be vulnerable to EMP. A moderate EMP event with an intensity of 10-20 kilowatts per square meter may cause minor interruptions to solar panel function, but a high-intensity event exceeding 100 kilowatts per square meter can cause significant damage.

Shielding Methods for EMP Protection

To protect solar panels from EMP, several shielding methods can be employed. One technique is to use a Faraday cage, which can be constructed using a metal mesh or a thin sheet of metal. The cage should be designed to enclose the solar panels and inverter, and connect it to earth ground to prevent electrical charges from building up. Another method is to use a grounded aluminum or copper sheet to shield the electronics within the inverter. For example, a 1/16 inch thick aluminum sheet with a surface area of 1 square foot can provide effective shielding against EMP.

EMP Hardening of Solar Panels

EMP hardening involves designing and building solar panels to withstand EMP effects. This can be achieved by using EMP-hardened components, such as EMP-resistant capacitors and transformers. The inverter and other electronic components should be built with EMP-hardening techniques, such as using surge arresters and transient voltage suppressors. Additionally, the solar panel system should be designed to operate in a “fail-safe” mode, where it can continue to generate power even if some components are damaged by EMP.