Abstract: This study is to geospatially analyze and assess the rate of encroachment on the Nigeria Electricity Transmission Grid Right of Way (ROW) in parts of Port Harcourt, Rivers State of Nigeria. This research work was done using ground truth survey and remote sensing technique. Coordinates of the electricity power line pylons were obtained from the office of the surveyor general, Rivers State Ministry of Lands and Survey, the coordinates where used to geo-reference the spot satellite images of the year 2007, 2012 and 2017 respectively using ArcGIS 10.1. The spot images were used for spatiotemporal changes in the study area. Buffer of 50m ROW was created and buildings within ROW were digitized to ascertain the rate of encroachment on the Electricity Power Line Right-of-Way.