G 2 EDPS's First Module & Its First Extension Modules

100% renewable worldwide power grid (Global Grid) system needs a Global Grid Electricity Demand Prediction System (G2EDPS) with very short, short, medium and long term forecasting consoles. This paper presents the 1st core module and its 10 extension modules in the long term prediction console. A type 1 Mamdani like Fuzzy Inference System (FIS) with 7 triangle membership functions and 49 rules is designed for 2 input and 1 output variables for a 100 year forecasting period. The maximum absolute percentage errors (MAP), the mean absolute percentage errors (MAPE), and the Symmetric MAPE (SMAPE) of the best core module and its extension modules are respectively 0, 24; 0, 08; 0, 05 and 0, 22; 0, 07; 0, 05.