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Student capstone and applied projects from ASU's School of Sustainability.

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The Solar Duck Curve and Sustainable Storage Options: A Policy Recommendation

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…

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
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Podcasting to Empowering People

Description

The commonly accepted goal of sustainability, to fulfill our current needs and maintain the worlds systems so future generations can also fulfill their needs, unifies efforts efficiently and aligns people with future thinking. But the concepts related, and their applications are fairly ambiguous in guiding people to what exactly they…

The commonly accepted goal of sustainability, to fulfill our current needs and maintain the worlds systems so future generations can also fulfill their needs, unifies efforts efficiently and aligns people with future thinking. But the concepts related, and their applications are fairly ambiguous in guiding people to what exactly they can do to make choices for sustainability. Individuals choices make a difference, adding up to societal shifts that change the world for the better. In such a complex world, there is a clear need for guidance through these systems. Sustainability and Resilience (S&R) is an optimistic podcast that journeys through thought-provoking science-based sustainability challenges with a bit of comedic relief. Listeners are entertained and become empowered to know what sustainable choices are, and why they are sustainable. S&R podcast uses systems thinking to pinpoint, realistic actionable items that empower listeners with a broad-spectrum sustainability knowledge for making everyday choices. Foundational research proved, developed and formed the idea of the podcast. Recording research lead to the ability to record test episodes, gather listener feedback and update the podcast concept. The podcast was officially created with the release of the debut episode that can anyone can listen to for free on all major platforms.
ContributorsCheney, Kate (Writer of accompanying material)
Created2020-05-15

On-Site Renewable Energy Battery Storage

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…

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.
ContributorsShamblin, Sandra M. (Writer of accompanying material)
Created2020-05-15