Date of Graduation

Spring 5-18-2024

Document Access

Project/Capstone - Global access

Degree Name

Master of Science in Energy Systems Management

College/School

College of Arts and Sciences

Department/Program

Energy Systems Management

First Advisor

Dr. Jim Williams

Second Advisor

Joshua Spooner

Abstract

An integrated resource plan (IRP) is crucial for utilities to determine the most cost-efficient energy resources while considering system reliability, environmental impact, and regulatory requirements. VitalsparK developed an IRP for Tucson Electric Power (TEP) to transition its current 70% thermal and 30% renewable energy portfolio, emitting 740 grams of CO2 per kWh, toward carbon neutrality by 2050. The proposed plan involves retiring existing infrastructure, adding 8 GW of renewable and storage capacity, and incorporating 2.5 GW of net-zero natural gas power plants. VitalsparK presented two scenarios: the Reference (REF) Case, which focuses on the least-cost portfolio to meet demand through 2050, and the Carbon Neutral (CARN) Case, which aims to achieve carbon neutrality by 2050 while meeting the same demand. The REF case highlights minimal impact on average retail rates and robust infrastructure to meet energy demands cost-effectively. Conversely, the CARN case showcases a successful transition to 100% clean energy by 2050, aligning with TEP’s greenhouse gas reduction goals. The analysis demonstrates that both cases can meet TEP's growing demand, but the CARN case is preferred for its environmental benefits. VitalsparK recommends TEP adopt the CARN guidelines to achieve its carbon-neutral aspirations.

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