Translation guide
A carbon credit is a permit that allows the holder to emit a certain amount of carbon dioxide or other greenhouse gases. This entry explains how to refer to carbon credits in Japanese, including the standard term, related concepts, and usage in environmental and business contexts.
The standard term for a tradable certificate representing the right to emit one tonne of carbon dioxide or an equivalent amount of another greenhouse gas.
This is the most common and direct translation of 'carbon credit'. It is widely used in business, environmental policy, and media.
Companies can purchase carbon credits to offset their emissions.
The katakana loanword from English. It is also common, especially in international contexts or when emphasizing the global carbon market.
Trading of carbon credits is becoming more active.
A permit issued by a government or regulatory body under a cap-and-trade system, allowing the holder to emit a specific amount of greenhouse gases.
Literally 'emission quota' or 'emission allowance'. This term is used in official and regulatory contexts, such as emissions trading schemes.
The government allocated emission allowances to companies.
Literally 'emission right'. Often used interchangeably with 排出枠, but can imply a tradable right rather than a fixed quota. Common in discussions of emissions trading.
A credit generated by a project that reduces, avoids, or removes greenhouse gas emissions, used to compensate for emissions elsewhere.
The katakana term for 'carbon offset'. It refers specifically to credits from voluntary offset projects, such as reforestation or renewable energy.
The airline offers a carbon offset program.
A more literal translation combining 'carbon' and 'offset'. It is less common but may appear in technical documents.
While these terms are sometimes used interchangeably in English, Japanese distinguishes them more clearly. 炭素クレジット (or カーボンクレジット) is the general term for a tradable certificate. 排出枠 specifically refers to allowances under a regulatory cap-and-trade system. カーボンオフセット refers to voluntary credits from emission reduction projects. Use the term that best fits the context.
The price of EU emission allowances rose.
Individuals can also purchase carbon offsets.
Emissions trading was introduced under the Kyoto Protocol.
This project generates carbon offset credits.