21.5kW gas,0.1kW electric. Natural gas With a powerful 9kW convection oven and a 12.5kW dual ring cast iron bullseye solid top, the natural gas Blue Seal Evolution Series G576/L oven range offers exceptional versatility and endless cooking options. Designed for everyday use in the busiest of commercial kitchens, the Blue Seal boasts impressive build quality throughout the unit. From robust, heavy duty dial controls to durable stainless steel construction, the Blue Seal oven range is ideal for the busy restaurant, takeaway, school or hotel.