Industrial production is a significant consumer of both materials and energy. Therefore efficient use of energy in production is important for reaching of the global sustainability targets. Overall there are more than 20 breweries in Latvia, most of which are small size breweries. Increased resource and energy efficiency could benefit these companies by reducing production costs as well as reducing environmental impact from beer brewery. On the other hand there is an absence of a specific reporting system for companies to declare their production performance information; therefore no statistical data are available for comparison of case study brewery with other breweries in the region. In addition the literature regarding specific energy consumption in small size breweries is scarce. To evaluate the efficiency of energy consumption in the brewery the case study data was compared to recommendations of the Reference Document on Best Available Techniques in the Food, Drink and Milk Industries (BAT) (the drawback of this approach is that these recommendations apply for breweries with capacity over 1 million hl of beer per year) and other cases studies or medium size breweries. The aim of this study is to (1) evaluate resource and energy consumption patterns and (2) determine potential resource and energy efficiency improvements in a small-size brewery in Latvia.