Download SKM GroundMat 2.0. Download SKM GroundMat 2 SKM GroundMat SKM GroundMat is a specialized software module within SKM Power Tools (PTW) designed for substation ground grid design and analysis. It helps engineers evaluate touch and step voltages, earth potential rise, and overall grounding safety using IEEE Std. 80 and IEC Std. 479 standards. Key