This two-year study analysed production performance in a barn with about 300 cows, equipped with milking robots, robotic feed pushers and barn cleaners. Cell count quality and chemical composition of milk as well as inputs and working conditions of personnel were analysed. Both primiparous and older cows up to the 7th lactation easily adapted themselves to the new technology. High milk production was achieved. In 2014, the average yield was 10,700 kg and in 2015 - 11,300 kg of milk. Chemical composition of milk was typical for the Holstein Friesians. In 2014, only 5.3% of these cows showed subclinical, and 2.1% - clinical signs of mastitis, which suggests a very good quality of the milk produced at the barn, measured by somatic cell count. In 2015, these signs were found in 4.8% and 1.5% of cows, respectively. The frequency of milking varied by yield and lactation stage. Cows were milked 3 times per day on average. Each robot conducted 150-160 milkings per day, which is a very high utilization rate. The work of personnel consisted mainly in control activities and was very efficient. Labour input was less than 3 minutes per cow per day.