% import original data "case" file
[baseMVA,bus,gen,branch,areas,gencost]=loadcase('case30pr4');

% launch runopf and capture bus and gen results for export
[baseMVA,bus_opf,gen_opf,gencost,branch_opf]=runopf('case30pr4');

% export OPF case for later study
savecase('case30_opf',baseMVA,bus_opf,gen_opf,branch_opf,areas,gencost);