Why a CDR Portfolio Approach Makes Sense

A portfolio approach to carbon dioxide removal makes sense because it allows for a diversity of methods to be used in mitigating the effects of climate change caused by increasing concentrations of carbon dioxide in the atmosphere. Carbon dioxide removal (CDR) technologies are becoming increasingly important in mitigating climate change and are essential in achieving the goals of the Paris Agreement.

A portfolio approach to CDR involves developing and implementing a range of different technologies and approaches to reduce the amount of carbon dioxide in the atmosphere. This approach recognizes that no single technology or approach can fully address the challenge of reducing carbon dioxide concentrations to safe levels, and that a variety of methods are needed to achieve this goal.

There are a number of benefits.

First, it can reduce the risk associated with relying on a single technology or approach. If one approach fails, others can be used to compensate.

Second, a portfolio approach can help to minimize costs, as different technologies and approaches have different cost structures.

Third, a portfolio approach can encourage innovation and competition among different CDR technologies, leading to greater efficiency and better outcomes.

Some examples of CDR technologies and approaches that could be included in a portfolio approach include afforestation and reforestation, direct air capture, enhanced weathering, ocean fertilization, biochar, bio-oil and soil carbon sequestration. Each of these approaches has its strengths and weaknesses, and a portfolio approach can ensure that a variety of approaches are used to maximize the overall effectiveness of CDR efforts.

In summary, a portfolio approach to carbon dioxide removal makes sense because it provides a range of options for reducing carbon dioxide concentrations in the atmosphere, reduces risk, minimizes costs, and encourages innovation and competition among different CDR technologies.