Cuneo (Italy) and Osterweddingen (Germany)
At its Cuneo plant (Italy), AGC Glass Europe invested in an electric power generation system with the aim of reducing indirect emissions of CO2 and also lowering costs for electricity. The system generates power by taking the waste heat of the flue gas from the glass melting furnace and converting it into electricity. This works via an Organic Rankine Cycle (ORC) module that uses organic oil with a low boiling point (instead of water as in a steam turbine generator). The system produced 4,329 MWh in 2017.
Our plant in Osterweddingen (Germany) is also equipped with a heat recovery installation. This installation produces electricity and steam, both being reused in the plant. The system produced 9,665 MWh in 2017.
Roccasecca plant (Italy) is equipped with a heat recovery system for heating its warehouse.
This system recovers the heat from waste hot air from a cooling tunnel located nearby the warehouse. Compared to other solutions (e.g. conventional heaters), this system avoids any additional gas consumption and so has no impact on the total amount of CO2 emissions released by the plant. This system makes it possible to recuperate about 580 MWh per year.
Cogeneration unit at Fleurus plant (Belgium)
The Fleurus automotive glass plant (Belgium) installed in 2013 a gas-fired cogeneration unit which produces two types of energy: electricity and heat. This system has energy efficiency of more than 90%.
The gas consumed by the co-generator is used 36% for electricity production, 32% for heating water, 18% for heating oil at 220°C, 2% for hot air production, and 2% for pre-heating de-ionised water.
Each of these “by-streams” is utilised in the plant itself. For example, electricity is used for mechanical power and lighting, hot water goes to the washing machines, and heat oil is used within various processes such as the autoclave, the PVB stretching, the back furnace, etc.
Thanks to this system, the Fleurus plant already saved around 500 tonnes of CO2 in 2017.
More and more plants installing photovoltaic panels
AGC Glass Europe is committed to in-plant electricity generation through the installation of photovoltaic (PV) panels.
The first photovoltaic panels were installed at the Osterweddingen plant (Germany) and Cuneo plant (Italy) in 2009 and 2010. Since then, other photovoltaic projects have been introduced at many other sites. The total output of these photovoltaic installations reached 8,875 MWh in 2017.