宇宙 うちゅう太陽 たいよう こう発電 はつでんだったら
uchūtaiyōkōhatsudendattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 宇宙太陽光発電

1. If it were space-based solar power; If space-based solar power existed

Tara Conditional