China Steel's refineries produce around two million tones of furnace slag annually, while power plants belonging to Taipower in the south and central region produce about 300,000 tones of fly ash. Both are a cheap and plentiful source of material for the reclamation project, providing an estimated 60 % of needs in the short term.
中鋼的爐石，年產二百萬噸左右，台電中南部電廠的飛灰，年產卅萬噸，經過特殊處理後，均是「便宜又大碗」的填海材料，估計約可提供近程填海計畫百分之六十的填料。