(ShareCast News) - Colin Emson has resigned from his role as director of Rurelec, the power generation asset developer said on Tuesday.Emson, currently the group's non-executive chairman, said his decision was aimed at allowing the new executive board to take "whatever measures are appropriate for the future stability of the company."Meanwhile, in a separate statement, the group added Marcelo Blanco will leave his post as non-executive director at the end of the month to take up a new role in Latin America.Rurelec shares were down 9.09% to 1.25p at 0959 BST on Tuesday.