Energex Canadian Softwood (Premier Bag). Energex Pellets (Premier Bag) exceeds the PFI’s premium grade standard. Their softwood pellets are designed to burn hotter and have been tested to yield a BTU value averaging between 8300 to 8500 BTUs per pound (on a dry basis). Their average ash content is about 0.5% and moisture content is 5% to 6%. There are no sulfur emissions from the pellet fuel.