Tongtai is fitted with a total of 22,148 solar panels on the rooftops of its headquarters、second factory and Hunei factory. Tongtai will ramp up electricity production to 9,590,000 kilowatt-hours per year which will reduce carbon emissions by 4,996,393 KG per year . This is equal to the carbon reduction efficiency of 12.84 forest parks the size of Taipei’s Daan Forest Park. Tongtai’s biggest rooftop solar energy plant, in the Southern Taiwan Science Park in Luzhu, began generating electricity in January 2019.