The Hera Group also, via its subsidiaries Hera Servizi Energia and AcegasApsAmga Servizi Energetici works actively in energy efficiency improvement services, mainly addressing condominiums (who are offered a range of energy efficiency improvement solutions among which a system that provides individual metering of the heat and energy service), large industrial customers (for which it operates as an ESCO) and the public administration (heat management with renovation of thermal plants and buildings).