The strength and stability of a company is based on the reliability of its group-shareholders. The shareholders of VOLTERRA are two Groups with considerable expertise in the sectors of Energy and Construction. VOLTERRA S.A. is the vehicle through which the two groups wish to work actively in the developing Energy Sector in Greece.


logoJ & P – AVAX S.A. is one of the largest construction companies in Greece. It has a large portfolio of concession projects and operation and has been present in Greece and in five other countries in Europe, Middle East and Africa. It is listed on the Athens Exchange and is active in Construction, Property Development (Real Estate), Facilities Management in projects such as: AttikiOdos (Greece), Rion-Antirion Bridge (Greece), International Airport Queen Alia (Jordan), as well as major environmental and energy projects such as: Komotini Power Station, Power Station Royal Cyprus Energy Station HEP ​​Thessaloniki.


logo2SORGENIA SpA is the largest purely private company in the energy industry in Italy. Established in 1999. SORGENIA SpA, apart from the energy production and sale of electricity, is also supplying the Italian market with natural gas. In the electricity sector SORGENIA has an installed capacity of 3800 MW, under construction more than 800 MW and about 560,000 customers. SORGENIA apart from the combined cycle plants from natural gas, has also a large presence in the electricity production from renewable energy sources (photovoltaic and wind farms, hydroelectric power stations, etc.). SORGENIA, has a production plant of photovoltaic panels, handles about 5 billion cubic meters of gas, of which three for own needs (5 billion in 2012). It operates in Italy, France and Romania.