In the expanding field of green finance and circular economy, the French greentech company Rainbow (formerly Riverse) is pioneering innovative solutions for certifying carbon credits in second-life battery projects. Facing financial barriers and a complex environmental verification process, Rainbow turned to Green Assist for expert support to develop a robust methodology to quantify avoided emissions and bring financial credibility to this emerging sector.
Rainbow is developing a carbon crediting platform focused on engineered solutions aligned with the operations and value chains of carbon credit buyers, with an emphasis on innovative end-of-life battery projects. With three regeneration and refurbishment projects already in progress, the company is developing a methodology to accurately quantify avoided greenhouse gas emissions. Once validated, this new approach will underpin the issuance of carbon credits, making second-life battery projects more financially viable and environmentally measurable.
To reinforce its scientific credibility and expand its efforts, Rainbow applied to Green Assist and received tailored advisory services from July to December 2024. An expert from the Green Assist Roster provided comprehensive support, helping the company enhance its life-cycle assessment (LCA) methodologies, identifying investment opportunities, and strengthening its financial strategy to attract both EU and private funding.
Green Assist’s intervention covered several key areas, such as advising on the environmental assessment, including impact and risks, as well as the development of a business model and a strategic investment planning. In addition, the expert offered insights on impact monitoring and the financial benefits of carbon credits. This was crucial for illustrating how carbon finance can complement existing EU support schemes, bridging critical funding gaps.
As part of its strategic development, Rainbow also benefited from Green Assist’s guidance on building connections with European research centres working on battery end-of-life management and regeneration. The expert facilitated access to LCA specialists and provided an analysis of EU financial support mechanisms available to the battery recycling sector. This strategic mapping helped Rainbow align its certification methodologies with regulatory expectations and investor needs.
“Green Assist’s support gave us both the technical depth and strategic clarity we needed to accelerate our methodology for second-life battery projects. Their expertise was key in strengthening our life-cycle assessment approach and ensuring that our carbon crediting methodology is scientifically robust and aligned with evolving standards,” said Clément Georget, Co-founder and Chief Product Officer at Rainbow.
With the support of Green Assist, Rainbow is now well prepared to finalise its methodology for battery regeneration projects, ready to enter the market and launch carbon credit certification. This will enable the company to support more project developers, improve the financial sustainability of second-life battery initiatives, and advance Europe’s green transition by offering financial rewards for reduced emissions.
Green Assist aims to build a pipeline for high-impact green investment projects in sectors related to biodiversity, natural capital and circular economy, as well as in non-environmental sectors.
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ec [dot] europa [dot] eu (cinea-green-assist[at]ec[dot]europa[dot]eu). To request advisory services from Green Assist, simply fill out this short form.
