Chapter 5. Assessing the Need for High Impact Technology Research, Development & Deployment for Mitigating Climate Change

摘要

p class="p1"span class="s1"Technology is a centrally important component of all strategies to mitigate climate change. As such, it encompasses a multi-dimensional space that is far too large to be fully addressed in this brief chapter. Consequently, we have elected to focus on a subset of topics that we believe have the potential for substantial impact. As researchers, we have also narrowed our focus to address applied research, development and deployment issues and omit basic research topics that have a longer-term impact. This handful of topics also omits technologies that we deem to be relatively mature, such as solar photovoltaics and wind turbines, even though we acknowledge that additional research could further reduce costs and enhance performance. These and other mature technologies such as transportation are discussed in Chapter 6./span/pp class="p2"span class="s1"This report and the related Summit Conference are an outgrowth of the University of California President’s Carbon Neutrality Initiative, and consequently we are strongly motivated by the special demands of this ambitious goal, as we are also motivated by the corresponding goals for the State of California, the nation and the world. The unique feature of the UC Carbon Neutrality Initiative is the quest to achieve zero greenhouse gas emissions by 2025 at all ten 10 campuses. It should be emphasized that a zero emission target is enormously demanding and requires careful strategic planning to arrive at a mix of technologies, policies, and behavioral measures, as well as highly effective communication – all of which are far more challenging than reducing emissions by some 40% or even 80%. Each campus has a unique set of requirements based on its current energy and emissions. Factors such as a local climate, dependence on cogeneration, access to wholesale electricity markets, and whether a medical school is included shape the specific challenges of the campuses, each of which is a “living laboratory” setting a model for others to learn and adopt. /span/pp class="p2"span class="s1"An additional aspect of a zero GHG emission target is the need to pay close attention to system integration – i.e., how the various elements of a plan to achieve carbon neutrality fit together in the most cost effective and efficient way. This optimization imposes an additional constraint, but also provides an important opportunity to capture the synergies that can arise from those choices. For example, one of the themes that has been proposed is the complete electrification of energy supplies, residential & commercial building operation, and transportation. The deployment of storage technologies such as batteries and/or hydrogen for both transportation and for load balancing of grid and distributed generation may provide some synergistic opportunities for integrating these systems that will accelerate the deployment of each. A specific example is the use of on-board batteries in electric vehicles for load balancing the electric grid. On-site residential storage as is now being developed by Tesla Motors, has the potential to accelerate the deployment of residential solar installations. In the case of hydrogen fuel cell vehicles, the necessary infrastructure to provide a network of hydrogen filling stations might also accelerate the use of hydrogen for storage on the electric grid by using excess solar capacity to produce hydrogen by electrolysis./span/p.