The ZIN company was a challenge for both our architects and technicians, especially for the nature of the production, as it is never possible to stop the gas supply, at the same time, the area was so large and fragmented that we were motivated to use LoRaWAN technology for the first time in our installations. Since there was no public LoRaWAN network coverage in the area, we built our own LoRaWAN gateway, which serves ZIN and can now serve the wider area as well. Thanks to technology, we managed to fulfill the main goal of the company, namely not to exceed the daily measured maximum consumption of natural gas, as well as to provide a basic audit that gives the company an overview of which technologies are profitable to replace with less energy-intensive ones and in what time frame it can expect a return on its investment . Thanks to this, the company is able to make sensible decisions in the area of energy investments.