Rubicon Carbon Unveils the Rubicon Rated Tonne, the First-Ever Carbon Credit Portfolio Rated by BeZero Carbon, Receiving an AAport Rating

• The first Rubicon Rated Tonne has received an AA_port rating under BeZero’s new portfolio-specific methodology.

• This curated portfolio is designed for companies where procurement offices require third-party assessments of carbon credits.

MARINA DEL REY, Calif., June 18, 2025–(BUSINESS WIRE)–Rubicon Carbon, a carbon credit management firm, today launched the Rubicon Rated Tonne (RRT), a new set of curated carbon credit portfolios for customers seeking credits with third-party verification. The first of these portfolios has received an AA_port rating by BeZero Carbon, a leading independent carbon ratings agency, through its new Portfolio Rating framework, indicating that each portfolio credit has a very high likelihood of achieving one tonne of CO₂e avoidance or removal.

Rubicon Carbon develops portfolios of carbon credits to minimize the risks associated with carbon credit purchases, build buyer confidence, and catalyze investment in climate resilience projects. A complement to Rubicon Carbon’s existing offering, the first RRT includes carbon removal, nature-based, and super-pollutant elimination projects. All of these projects have passed the company’s stringent due diligence process and, in addition, have received an AA_port rating based on the quality of their underlying credits.

“We believe that growing the voluntary carbon market will require cooperation among industry leaders to build buyer confidence among companies seeking to make progress towards their sustainability goals,” said Tom Montag, CEO of Rubicon Carbon. This partnership underscores Rubicon Carbon’s and BeZero’s shared commitment to transparency and environmental integrity. With risk-adjustment already built into the Rubicon Carbon Tonne, we’re excited to bring third-party validation and rigor to this innovative approach.

To qualify for a BeZero portfolio rating, all individual credits must be rated B or higher and have an additionality risk rating of ‘b’ or above. Additionally, at least 25% of the credits must match the portfolio’s overall rating, none may be more than two notches below it, and lower-rated projects require additional credit retirements based on BeZero’s discount schedule to ensure carbon integrity.

By purchasing carbon credit portfolios that incorporate risk adjustment, buyers gain greater confidence in determining how many credits they need to effectively address their emissions, verified by BeZero’s independent portfolio rating. The portfolio rating is time-stamped and updated regularly to ensure it reflects the latest portfolio composition.