Thenergo specializes in heat and electricity production by cogeneration from renewable energy sources (biogas, biomass and natural gas). The group also develops, builds, operates, and manages decentralized energy production plants. Net sales break down by activity as follows:

• waste collection, treatment, and transformation (37.7%);
• development, construction, and operation of decentralized energy production units (36.7%);
• energy production by cogeneration from natural gas (19.8%);
• energy production by cogeneration from biogas and biomass (5.8%).