Sherilyn Hayashida

A Comparison of State-Level Carbon Reduction Strategies: A Case Study of Hawai‘i

March 16, 2023

Abstract: State-level electricity standards are proliferating and becoming more ambitious, with numerous US states adopting a Renewable Portfolio Standard (RPS) and a small but increasing number of states participating in carbon pricing programs. The State of Hawai‘i has an ambitious RPS that requires 100% electricity generation through renewable sources by 2045. This study uses a […]

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Economic and GHG impacts of a US state-level carbon tax: the case of Hawai’i

April 19, 2022

A new paper by a team from UHERO published in Climate Policy finds that a carbon tax for Hawai‘i set at the federal social cost of carbon would reduce cumulative GHG emissions by 10% relative to the baseline from 2025 to 2045. They find that when carbon tax revenues are paid as equal-share dividends to Hawai‘i […]

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Does air pollution increase electric vehicle adoption? Evidence from U.S. metropolitan areas, 2011–2018

April 15, 2022

A publication in the Journal of Environmental Economics and Policy by a team of economists including UHERO’s Coffman, Hayashida, and La Croix shows that changes in local air pollution within U.S. metropolitan areas are associated with changes in consumer purchases of new EVs. The authors find a positive association between PM2.5 pollution and BEV adoption, and a negative […]

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Is a Carbon Tax Viable for a Small Island Economy?

June 17, 2021

By Maja Schjervheim, Paul Bernstein, Sumner La Croix, Makena Coffman, and Sherilyn Hayashida For the third year in a row, a carbon tax bill fizzled out at the Hawaiʻi State Legislature. Perhaps it was the difficult timing of introducing a new tax in the wake of a pandemic. Perhaps it was due to qualms regarding […]

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EV driver characteristics: Evidence from Hawaii

March 1, 2020

Electric vehicles (EVs) offer an opportunity to dramatically decrease greenhouse gas emissions within the transport sector if fueled by renewable energy. Hawaii had been early-on considered an ideal place to launch new EVs because of the limited driving range of its island geography. Though it ranks second in new EV registrations per capita in the […]

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Economic Impact of the Natural Energy Laboratory Hawaii Authority Tenant on the State of Hawaii in 2018

October 16, 2019

NELHA contracted the University of Hawaii Economic Research Organization (UHERO) to estimate its economic impact on the State of Hawaii. To estimate expenditures made by NELHA tenants in 2018, UHERO researchers developed a survey where expenditures were broken down into 17 named categories and respondents were asked to provide total expenditures in 2018 and the […]

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Integrating Renewable Energy with Time Varying Pricing

August 13, 2018

With increasing adoption of intermittent sources of renewable energy, effective integration is paramount to fully realizing societal benefits. This study asks the question, how valuable is residential real-time pricing (RTP) in comparison to time-of-use (TOU) rates to absorb increasing sources of intermittent renewable energy? We couple a detailed power sector model with a residential electricity […]

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Integrating Renewable Energy: A Commercial Sector Perspective on Price-Responsive Load-Shifting

July 23, 2018

Price-based demand response is an important component to achieving Hawaii’s 100% Renewable Portfolio Standard. This report provides a review of the impacts of time varying pricing programs for the commercial and industrial sectors. It presents commercial sector load patterns and rates for Oahu to gain insight into the potential impacts by sector of implementing time […]

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Do electric vehicle incentives matter? Evidence from the 50 U.S. states

June 7, 2018

UHERO congratulates Sherilyn Wee, Makena Coffman, and Sumner La Croix on the publication of, “Do electric vehicle incentives matter? Evidence from the 50 U.S. states,” in Research Policy. This research measures the effectiveness of state-level policies on the adoption of electric vehicles in the United States. Read more about this in The Role of Policy […]

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