Excel is a DEFRA approved fuel, authorized by government for use in smoke control zones across the UK. It is HETAS approved for Open Fires and Closed Appliances. Excel is a low ash, high heat, versatile and robust ovoid. Easy to light, long lasting with a powerful radiant heat, Excel has been a firm favorite with Consumers and Coal Merchants for over 20 years. If you've a multi-fuel stove or an open fire, or indeed you're a canal boat enthusiast, this is your fuel of choice!