E N S O L F U E L r , t = 100 1 + e − ( 2.823 + 0.166 ∗ G D P P C P r , t + 0.032 ∗ I N F R A E L E C A C C ( n a t i o n a l ) r , t ) {\displaystyle ENSOLFUEL_{r,t}={\frac {100}{1+e^{-(2.823+0.166*GDPPCP_{r,t}+0.032*INFRAELECACC(national)_{r,t})}}}}
