Sherilyn Hayashida
Who are Driving Electric Vehicles? An analysis of factors that affect EV adoption in Hawaii
This study uses data on EV registrations by zipcode in Hawaii to analyze a variety of demographic and transportation factors that might affect EV adoption. After controlling for population and gasoline prices, zip codes with higher income and educational attainment are associated with higher levels of EV adoption. Longer commute times also influence EV adoption […]
Read MoreDeterminants of Residential Solar Photovoltaic Adoption
Hawaii is a leader in distributed solar photovoltaic (PV) adoption. It has the highest rate of PV-based electricity penetration in the U.S. and rivals global front runners. The policy impetus towards large-scale adoption of renewable energy comes from the Renewable Portfolio Standard, with a target of 40% net electricity sales from renewable sources by the […]
Read MoreBringing together energy and climate change policy
By Sherilyn Wee We hear a lot about Hawaii’s Renewable Portfolio Standard (RPS) which requires 100% of the utilities’ net electricity sales to come from renewable sources by 2045. Subsidies, rapidly declining solar panel costs, and high electricity prices have led to the proliferation of distributed rooftop solar photovoltaic (PV). By the end of 2016, […]
Read MoreThe Role of Policy and Peers in EV Adoption
By Sherilyn Wee, Makena Coffman and Sumner LaCroix Electric vehicles (EVs) can be a cleaner means of transportation compared to cars with traditional gasoline engines. They have the added benefit of being able to provide support to the electric power grid—an increasingly important attribute in states like Hawaii with high levels of intermittent renewable energy. […]
Read MoreSherilyn Wee recognized as Outstanding Student of the Year by the U.S. Department of Transportation
UHERO congratulates Sherilyn Wee on receiving an Outstanding Student of the Year award, presented by the U.S. Department of Transportation (DOT). Sherilyn was recognized in Washington D.C. for her contribution to the transportation field through her research and leadership with the Electric Vehicle Transportation Center. For 26 years, the University Transportation Centers (UTC) Program, under […]
Read MoreEstimating the Opportunity for Load-Shifting in Hawaii: An Analysis of Proposed Residential Time-of-Use Rates
Hawaii’s largest electric utility, Hawaiian Electric Company (HECO) and its subsidiaries recently proposed a Time of Use (TOU) pricing scheme for residential rates. The TOU scheme has three tiers of prices: daytime, on-peak, and nighttime. The proposed rates have the highest cost during the on-peak period from 5pm to 10pm. For Oahu, the lowest cost […]
Read MoreElectric Vehicle Greenhouse Gas Emission Assessment for Hawaii
This study estimates greenhouse gas (GHG) emissions of electric vehicles (EVs) compared to that of other popular and similar cars in Hawaii, by county over an assumption of 150,000 miles driven. The GHG benefits of EVs depend critically on the electricity system from which they derive their power. The analysis shows that EVs statewide are […]
Read MoreA Status Update on Federal GHG Emissions Reduction Policy for Hawaii
By Paul Bernstein, Makena Coffman and Sherilyn Wee In early August, President Obama announced and the U.S. Environmental Protection Agency (EPA) released the final details for the Clean Power Plan (CPP). These rules are designed to lower levels of carbon pollution from existing U.S. power plants – aiming to curb U.S. electric sector emissions by […]
Read MoreDoes PV Add Home Value?
By Sherilyn Wee Hawaii leads the nation with the highest per capita installation of solar photovoltaic (PV). High electricity rates—three times the national average, —a generous state tax credit, plummeting PV costs, and net energy metering (NEM) policy have all contributed to the proliferation of PV. Considering future cost savings, PV is an attractive investment, yielding […]
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