Changi Airport Budget Terminal
Find out how the solar panel system at Changi Airport Budget Terminal works.
Changi Airport’s Budget Terminal is Southeast Asia’s first commercial airport with a solar photovoltaic (PV) power plant. This innovative 250kWp system is installed by Phoenix Solar Pte Ltd, the Asia Pacific headquarters of leading international PV systems integrator Phoenix Solar AG.
Conversion of sunlight into direct current (DC)
Solar Panels convert available sunlight into direct current (DC) electrical energy. The PV system at Changi Airport Budget Terminal uses 2 different PV module technologies: multi crystalline silicon PV modules from REC and CdTe thin film PV modules from First Solar. The PV modules are connected to the grid via 24 transformer-less inverters from SMA.
Transformation into alternating current (AC)
The PV modules are connected to the inverters where the DC electricity is converted to alternating current (AC). The PV system generates clean energy for Changi Airport Budget Terminal’s own use, reducing its energy consumption from the power grid by over 300’000 kWh per year. This is equivalent to 3% of Changi Airport Budget Terminal’s yearly energy consumption.
The AC is then fed into the building to power the electrical loads within. As the PV modules are installed on the existing roof of the Budget Terminal, the PV system also reduces the Budget Terminal’s air conditioning demand by shading the roof from direct sunshine. It also reduces the Budget Terminal’s carbon footprint by over 156 tons of CO2 per year.
The PV system is partially funded by the Singapore government, and is part of an educational and research program where Changi Airport Group will provide efficiency and performance data from the PV system to Singapore Polytechnic to study how to enhance the technology further.