Introducing the J-Blue Credit System
While the world the is still working out how voluntary carbon and nature markets should function for marine ecosystems including kelp, Japan has quietly been building one of the most advanced blue carbon credit systems in operation today. The country has already embedded blue carbon in national climate policy and market design, creating a system where mangroves, seagrass, tidal flats and seaweed (!) are formally recognised as contributes to CO2 sequestration. Here, we explore how this system works, what makes it unique, and what lessons it offers for the global blue carbon markets.
Blue Carbon in Japan
Japan has committed to achieving net-zero greenhouse emissions by 2050, with expectations that governments, businesses, and citizens are to significantly reduce their CO2 emissions. However, the emissions that cannot be reduced can be offset through carbon credits generated by CO2 removal initiatives such as restoration and conservation projects. Blue carbon, the carbon captured and stored by marine vegetation, has emerged as a significant component of its national strategy, harnessing Japan’s vast coastline and rich marine ecosystems.
In 2020, Japan’s Ministry of Land, Infrastructure, Transport and Tourism established the Japan Blue Economy Association (JBE) to run the world’s first government-approved, voluntary blue carbon credit system, J-Blue Credit. Since 2022, mangroves, seagrasses, tidal flats, and wild and farmed seaweeds have all been eligible for J-Blue Credits, making Japan another world-first in officially recognising kelp as part of their blue carbon ecosystem and including kelp-based carbon in its national emissions inventory submitted to the UN.
How does the J-Blue Credit work?
JBE has built a national market and methodology which quantifies the amount of CO2 that is absorbed and removed through marine restoration and seaweed farming projects and turns it into tradable credits. A J-Blue credit is certified and issued by JBE after being reviewed and approved by an independent third-party committee, ensuring initiatives are also externally validated by third parties and environmental integrity is upheld. These credits can be sold to companies who are looking to financially contribute to marine ecosystem restoration, creating a financial mechanism which funds and increases recognition of marine conservation projects.
J-Blue Credits are unique in several ways. Firstly, these credits allow the stacking of multiple co-benefits such as biodiversity credits and community benefits, leading to its high trading value of an average of 400 USD per tonne CO2 (10x higher than other global credits). Secondly, unlike typical credits which usually project future carbon potential, J-Blue Credits are only issued after restoration has happened and carbon has been sequestered, with required annual monitoring to ensure this is continuing to occur. Lastly, projects under the J-Blue Credit System are community led, with 85% of J-Blue Credits developed and led by fishers.
Japan has more kelp restoration projects than the rest of the world combined, providing many lessons and opportunities for other countries to learn from. However, these initiatives are often underreported internationally, with key blue carbon project data being hidden behind language barriers. At the Kelp Forest Foundation, we aim to facilitate the flow of information on blue carbon in Japan by sharing examples of kelp conservation and restoration projects which can aid and catalyse other blue carbon initiatives around the world.
