afaik geothermal energy from leyte powers most of the visayan/mindanao grid if not some parts of luzon..and i believe that puts the country one of the top producers of geothermal energy in the world..geothermal energy is environment friendly.does emit smoke but less harmful than fossil-fuel burning power plants..but is not cheap needs capital for exploration and drilling
solar cells would be better...but is still expensive for pinoys
biogas/biodiesel for transpo..better yet go hybrid