Cott Beverages, the soft drink manufacturer behind Sainsbury's Classic Cola, is launching the UK's first low-calorie energy drink.
The product is being rolled out as a 'light' extension of Cott's energy drink brand Red Rooster. It will be sold to retailers to brand as their own. Asda currently sells Red Rooster as Blue Charge.
Red Rooster Light will be the only low-calorie stimulation drink in the UK, with less than 15 calories a can. The standard Red Rooster drink, which was launched in March, contains about 110 calories.
Diet brands have captured almost half the cola market, but there have previously been no diet options available to energy drink consumers.
Earlier this year, Cott launched another first in the energy drinks sector in the form of Edge Cola, a cola-flavoured energy drink.
Last month, Coca-Cola entered the energy soft drink sector with a functional drink called Burn, which is being targeted at clubbers and young urban types.