data from multilateral institutions are reported in a simplified format using categories drawn from the approach used by the world bank group to classify energy projects while energy efficiency data are reported such projects present a particular challenge in their classification for example a transmission line project may be reported by some organizations either as an expansion of the grid or an improvement in efficiency this leads to the exclusion of many valuable projects aimed at building capacity training feasibility studies planning enabling activities and in some cases small projects aimed at reforming the market