Originally Posted by Ron_L
This is not the case. The igniter is only on for 5 minutes at the very beginning. It is not on after that. The fire in a pellet cooker is 100% wood, no electrical assist past the initial lighting.
Ron is correct as usual, but I think the other intent of the post is also accurate. Pellets burn "cleaner" IE: more efficiently with the direct air flow from the fans the pellet's firebox uses which results in less smoke than a stickburner's smoldering logs.
That said, one can use plenty of other methods in a pellet cooker to achieve a very intense smoky flavor. I modified my FEC-100 to have a grate of exapanded metal right next to the firebox that I place chunks of the wood flavor of choice to enhance the pellet smoke coming from their combustion.