グレー水すい素そ

グ

レ

ー

す

い

そ

Meanings

1

noun

gray hydrogen; grey hydrogen

Technical term in energy and environmental contexts; hydrogen produced from fossil fuels (typically natural gas) with CO₂ emissions, as opposed to green or blue hydrogen.

グレー水すい素そは製せい造ぞう時じに二に酸さん化か炭たん素そを排はい出しゅつする。
Gray hydrogen emits carbon dioxide during production.

water

素elementary, principle, naked

Similar words

グリーン水すい素そ
Green hydrogen is produced via electrolysis using renewable energy, with no CO₂ emissions.
ブルー水すい素そ
Blue hydrogen is also produced from fossil fuels, but the CO₂ is captured and stored, reducing emissions.

Etymology

Loanword from English 'gray hydrogen', combining グレー (gray) and 水素 (hydrogen).