Petrol stations can be characterised by high traffic and fast-changing energy consumption patterns. A lot of attention in this type of buildings is being drawn towards air quality and freshness of the offered products. Only a few years ago the lack of AC system and proper food cooling equipment were common during the summer period. In turn, in winter, a faulty heating system often translated into serious problems. Nowadays, a lot of technological progress has been made, leading to a significant increase in energy consumption. Meeting customer requirements and ensuring high quality of service has become much easier thanks to the installation of the Evosystem monitoring system combined with an automatic power guard, which has completely relieved the petrol station staff from controlling energy consumption. In addition, our alarm system makes it easy to detect anomalies, such as faulty capacitor batteries, incorrectly set twilight detectors for external lighting, or valve failures on an automatic washer. Today, we can confidently say that our system, used in Poland for nearly 15 years, has brought huge benefits and equally huge savings.