Indeed, you also can burn thousands of gallons of jet fuel and the tyres on a 747 actually spin fewer times than the tyres on a Citroen 2CV do just going to the

Indeed, you also can burn thousands of gallons of jet fuel and the tyres on a 747 actually spin fewer times than the tyres on a Citroen 2CV do just going to the supermarket. The power in a fire is mostly released as heat, both because they're "compact" piles of burning stuff, and because they're more or less "red/yellow" black body radiators. If it was all released as visible light, burning 3 kg of wood (about 12kWh) over 10 hours would be about the brightness as several kilowatts of metal halide stadium floodlamp.