Geospatial Analysis


The Network Expansion Model is a computational software which allows to determine the best electrification alternative for each one of the Country’s settlements, through economic criteria.


Gesto combines the most advanced geo-spatial network planning methodology developed and tested in many countries, with the renewable resource assessment, scenario development, electrification planning and economic modelling.


This methodology is based on quantitative estimates of electricity demand, geo-spatial demand inputs, including settlements,  as  well  as  markets,  schools,  health  facilities,  and  other  non-residential,  geo-located demand  points and the least-cost  comparison  between different electrification alternatives employing a variety of generation technologies.

The final result is the most economically viable interconnected grid for the long term run as well as the candidates for off-grid electrification


The basic steps of the demand-driven electricity planning process:

  • Identifying locations and size of human settlements and locations of key non-residential demand points (which can include social infrastructure such as schools or clinics, markets, water pumping sites, and many other features);
  • Gathering data for existing electricity infrastructure, including medium-voltage (MV) grid lines, generation sites, and other key features;
  • Calculating demand at each location and then comparing costs of various electricity options (grid, hydro/solar/diesel based mini-grid, solar home system) options for every demand point considering existing renewable generation alternatives;
  • Specifying electricity technologies for all points in the system, resulting in a cost-optimal network of grid-connected demand points, as well as all off-grid sites.

In Liberia, Gesto developed the Rural Electrification  Master Plan of Liberia.

In Senegal, Gesto developed the Rural Electrification Program for Senegal.