I had the opportunity to compare all three (coal, electric and gas) at the same time, preparing the same meat. Not a single person in our group of ~10 could tel

I had the opportunity to compare all three (coal, electric and gas) at the same time, preparing the same meat. Not a single person in our group of ~10 could tell which energy supply had been used in the preparation. But you need a proper electric grill with a hood and ~2kW power. This also limits the size of the grill, so if you need to feed a group of 6 or larger, maybe focus on gas or coal over electric. Or maybe someone builds an electric bbq to connect to an EV charging station?