School of Sustainability Graduate Culminating Experiences
Student capstone and applied projects from ASU's School of Sustainability.
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- All Subjects: Renewable Energy
Description
Before the rise in renewable energy, few people considered the consequences of adding large amounts of intermittent power onto the grid. As renewable energy has become more prevalent, utility companies must adapt their business practices to accommodate these unique sources of power. This is leading to challenges on how best to manage a grid with large amounts of renewable power. Arizona Public Service (APS), the largest electricity provider in the state of Arizona, has more than 70,000 distributed solar customers on their grid and the number of solar customers increases every day. With this increase in distributed solar customers comes the solar duck curve—the phenomenon whereby solar produces energy during times of low demand. However, with the use of storage, the duck curve problem may be mitigated. This project examines the sustainability of three storage options: pumped hydro energy storage, compressed air energy storage, and lithium-ion batteries. Using several sustainability indicators, this project makes a policy recommendation to APS on the most sustainable choice for large-scale energy storage. This project found that compressed air energy storage was the most sustainable option for APS. This considered the impacts of compressed air on the environment, communities, and the costs of this storage option. One important aspect to acknowledge regarding this technology is that in its current form, it does emit some carbon emissions. However, the carbon emissions may have less of an impact if this storage facility can allow APS to use its renewable energy assets most efficiently and continue to use energy from Palo Verde, the nuclear facility in Arizona.
ContributorsRood, Devon (Author) / Romito, Marc (Contributor)
Created2018-04-25
Description
This document contains a feasibility study that explores the necessity, collaborations, and
possible methods of installing a 1 megawatt lithium-ion battery storage facility at San Diego Gas
& Electric’s Century Park campus located in the Kearny Mesa neighborhood in central San
Diego, California. The battery will serve purposes of adding renewable energy to the energy mix,
reducing operations costs via peak shaving, an educational component for the region, and
meeting stringent State of California and California Public Utilities Commission mandates for
both renewable energy and battery storage capacity.
possible methods of installing a 1 megawatt lithium-ion battery storage facility at San Diego Gas
& Electric’s Century Park campus located in the Kearny Mesa neighborhood in central San
Diego, California. The battery will serve purposes of adding renewable energy to the energy mix,
reducing operations costs via peak shaving, an educational component for the region, and
meeting stringent State of California and California Public Utilities Commission mandates for
both renewable energy and battery storage capacity.
ContributorsShamblin, Sandra M. (Writer of accompanying material)
Created2020-05-15
Description
This paper recounts a project journey that was taken to explore how replacing plastics with less harmful materials can drive positive environmental impact. The project examined the scope and impacts of plastic pollution attributable to healthcare delivery and the adverse impacts it has on population health. Identifying potential options to replace plastics was accomplished by obtaining access to one of the world’s leading materials databases. This access enabled identification of several alternative materials with documented uses as plastic replacements. Evidence of successes that have been achieved in replacing plastics with less harmful materials was gathered by conducting interviews with international materials experts and senior executives from several different industries. These examples are combined with the research findings on alternative materials to construct a case that taking action can yield financial benefits while doing less harm to people and the planet. The completed project presents a framework that can be followed in future efforts to replace plastics. While the scope of the project focused on the plastic pollution problem from a healthcare perspective, the framework that was created is portable and can be adapted for use in any organization or industry seeking to replace plastics and drive change to create a healthier future.
ContributorsO'Brien, Patrick (Writer of accompanying material)
Created2019-12-03