HOLDIGAZ GROUP NATURAL GAS BUILDING TECHNIQUES RENEWABLE ENERGIES Natural gas distribution Home solutions Mobility solutions Building techniques Renewable energies SHARE PRICE LAST TRANSACTION 30 11 2021 → CHF 185.00 PUBLICATIONS ANNUAL REPORT CUSTOMERS AREA > YOUR ACCOUNT ›E-BILL > CLIENT CONTACT GROUP NEWS PRESS RELEASE OF 09/30/2021 GENERAL MEETING OF HOLDIGAZ SA EVENTS © Holdigaz SA 2021 Contact

HOLDIGAZ GROUP NATURAL GAS BUILDING TECHNIQUES RENEWABLE ENERGIES COSVEGAZ NETWORK COMPANY Cosvegaz SA , in Cossonay - active in the distribution of natural gas in the districts of Morges (VD), Gros-de-Vaud, Jura-Nord vaudois, Broye-Vully (VD), Lavaux-Oron (VD) , de la Glâne (FR) and de la Broye (FR), for many years - now focuses on technical activities related to the natural gas network (installation, connection and maintenance). It transferred the energy marketing activities to Energiapro SA , another company in the Holdigaz group. Since April 1, 2017, these two companies attached to the Vevey holding jointly ensure a regular and constant distribution of energy including a portion of biogas, while guaranteeing the best price as well as a personalized and reliable service. A total of 113 municipalities in the cantons of Vaud and Friborg are supplied to serve many households and companies active in the industrial sector. New Cosvegaz address Also since April 1, 2017, the administrative and technical-commercial services have been providing their services with the same availability as in the past, from the Holdigaz premises in Vevey. The head office of Cosvegaz is maintained in Cossonay. COSVEGAZ NETWORKS Map of Holdigaz networks List of municipalities served General conditions relating to natural gas installations NATURAL GAS AT THE SERVICE OF YOUR COMFORT SMELL OF GAS? Phone. 0800 402 403 - 24/7 > Our safety advice RESEARCH Check the availability of gas in your town: FIND OUT MORE Client area The rates Natural gas, a solution for the whole home Information for installers Works? Consult our network plans! Energiapro: natural gas supplier CONTACT COSVEGAZ SA Avenue Général-Guisan 28 1800 Vevey Phone +41 (0) 800 402 403 fax+41 21 861 27 92 info@cosvegaz.ch We are at your disposal: Monday-Friday 07: 30-12: 00/13: 30-17: 30 DISCOVER NATURAL GAS-BIOGAS MOBILITY! © Holdigaz SA 2021 Contact

HOLDIGAZ GROUP NATURAL GAS BUILDING TECHNIQUES RENEWABLE ENERGIES SECURITY DID YOU SMELL GAS? DID YOU KNOW ? - Natural gas is the least dangerous and cleanest gas (low CO 2 emissions , no fine particles). - Lighter than air, it dissipates quickly when it is found in the atmosphere. - Natural gas is odorless. An odorous substance has been added to it to allow the detection of a possible leak and thus avoid any accident. SMELL OF GAS? CICG and SGPR: +41 21 925 87 87 COSVEGAZ: 0800 402 403 24/7 FIND OUT MORE All about natural gas Natural gas / biogas mobility The all gas house AREAS SERVED BY HOLDIGAZ NETWORKS ENLARGE THE MAP © Holdigaz SA 2021 Contact