ICFOSS created a software stack using Open Street Map (OSM) and allied technologies to map power-lines for KSEB across Kerala.The solution included a. Mobile field survey and mapping tool b. Map editor for post production and drawing c. Map viewer d. Map printing e. Various intermediate data processing and conversion tools. Complete tool chain was designed and field tested. KSEB used our approach to map 11Kv electric polls of distribution department. This covered around 14 Lakh+ electric polls. The original cost estimate for the work by KSEB using traditional approach and proprietary systems was around Rs.200 crores.The benefit through utilisation of the map data like electricity loss minimisation and quality improvement is also to be noted. The entire process was based on technologies and standards around OpenStreetMap.