No, gas grills cannot use charcoal. Propane and natural gas models are designed with specific burners to channel the fuel and heat. Putting charcoal into these boxes will result in a mess of ash since these are not made with ash bins. If you want the power of a grill and the flavor of a charcoal grill, consider buying a combination grill. While they’re not for every outdoor chef, a charcoal/gas combo can be a fun way to try new ways to cook. The two sides of these cookers have independent grilling surfaces and lids. It’s the safest and easiest way to bring charcoal to a gas grill party.