id	keyword
elp-1198	energy
elp-1198	figure
elp-1198	global
elp-1198	policy
elp-1198	co2s
elp-1198	economics
elp-1198	vol
elp-1198	law
elp-1198	power
elp-1198	countries
elp-1198	www.scholink.org/ojs/index.php/elp