Translation guide
Refers to energy sources that are not fossil fuels, especially renewable and environmentally friendly ones. In Japanese, the most common term is 再生可能エネルギー (renewable energy), but other expressions exist depending on context.
To refer to energy from naturally replenished sources like solar, wind, hydro, etc., often in environmental or policy contexts.
The standard term for 'renewable energy'. Widely used in news, government, and everyday conversation.
再生可能エネルギーの普及が進んでいる。
The adoption of renewable energy is progressing.
再生可能エネルギーは環境に優しい。
Renewable energy is environmentally friendly.
Literally 'natural energy'. Often used interchangeably with 再生可能エネルギー, but can sound slightly more grassroots or nature-focused.
自然エネルギーを利用した発電が増えている。
Power generation using natural energy is increasing.
Emphasizes the 'clean' aspect, often used in marketing or advocacy. Can include nuclear in some contexts, so be careful.
クリーンエネルギーへの転換が必要だ。
A shift to clean energy is necessary.
To refer to any energy source that replaces conventional fossil fuels, including nuclear or new technologies, often in technical or policy discussions.
Direct translation of 'alternative energy'. Used in technical and policy contexts, but less common in everyday speech than 再生可能エネルギー.
代替エネルギーの開発が急務だ。
The development of alternative energy is an urgent task.
To refer to energy sources outside the mainstream, sometimes including experimental or niche technologies.
Technical term meaning 'unconventional energy'. Rarely used in daily conversation; mostly in academic or industry reports.
非在来型エネルギー資源の探査が行われている。
Exploration of unconventional energy resources is underway.
For most everyday situations, use 再生可能エネルギー. It is the most recognized and neutral term for renewable energy in Japan.
The direct translation 代替エネルギー is correct but can sound technical or formal. In casual conversation, 再生可能エネルギー or 自然エネルギー is more natural.
Means 'new energy'. Often used in policy contexts to refer to emerging energy technologies, including hydrogen, fuel cells, etc.
新エネルギーの研究に投資する。
Invest in new energy research.