Effect of spruce forest on electric fields caused by 400 kV transmission lines

In a previous study on electric fields near 400 kV transmission lines it was noticed that the differences in calculations and measurements were caused by vegetation dampening the field. This caused the need for further investigation and dampening measurements. The measurement results of electric fields near spruce trees of different sizes show that spruce trees dampen electric fields. Thus spruce forest and trees might be a possibility to reduce electric fields from transmission lines. The aim of this study is to investigate the effect of spruces and spruce forest on electric fields of 400 kV transmission lines.