A high altitude (841 m amsl) grid station has been planned at Mansehra, Pakistan as a part of power evacuation from Dasu dam, through 765 kV transmission line. Mansehra is situated in the western part of Himalayan Orogeny. Main geological feature at the site is excessively sheared granite due to ductile formation. This igneous rock is completely too moderately weathered in its upper zone up to 15 m and is rated as weak to medium strong. Its RQD varies from 0 to 50%, mostly nil core recovery and uniaxial strength of intact rock varying from 10 to over 25 MPa. The compression wave velocity ranges from 500 to 1800 m/s, generally. This rock is essentially Intermediate Geo Material (IGM) and has been treated as soil for engineering purpose. The average PGA at the site is 0.28 g whereas Soil Profile Type has been assessed as Sc. The levels at site vary as much as by 35 m. The project planning envisages provision of roads and structural works for the grid station. This would involve generally 5–10 m deep cutting in IGM and slope stability could be an issue at site. This has been addressed by selecting representative parameters of IGM using Hoek–Brown model for jointed rock, using Rocscience software. Subsequently, slope stability analyses have been run for various slopes from 1.0V:0.5H to 1.0V:2.0H, using limit equilibrium method with Geo-Studio software, based on iterations, both in static and pseudo static conditions. These studies have yielded encouraging results for cutting the slopes in IGM at a slope of 1V:1H for all expected heights, loading scenarios and environmental conditions. The outcome of these studies may be used elsewhere too, with similar rock formations, for enacting economy.