BNL’s headquarters in Rome has chosen high-efficiency cogeneration to reduce its operating costs. Since 2014 the site, which accounts for 16% of the entire company’s energy consumption, has been equipped with a 2 MW trigeneration plant enabling the thermal vector to be used throughout the year. With an average 98% availability, the installation has guaranteed BNL a 40% reduction in the unit cost of energy and a saving of about 100t of CO2 a year. This project is part of an initiative to use renewable energy within the company.