noun-modifying (irregular)
solar
Used attributively before nouns to mean 'solar-powered' or 'related to the sun', as in ソーラーパネル (solar panel) or ソーラーカー (solar car).
この家はソーラーパネルで発電している。
This house generates electricity with solar panels.
ソーラー時計は電池交換が不要だ。
Solar watches don't need battery replacements.
The native Japanese word for 'sun'; used in compounds like 太陽光発電 (solar power generation), while ソーラー is a loanword used mainly in product names and technical contexts.
Loanword from English 'solar'.