Makena Coffman

Sea level rise risk interactions with coastal property values: a case study of O‘ahu, Hawai‘i September 14, 2023 Abstract: Climate change-induced sea level rise (SLR) will affect a range of coastal assets and prompt difficult decisions about coastal land use across the world. Several recent studies find that current and projected SLR is associated with relatively lower property values. We contribute to this growing body of research with a case study of O‘ahu,… Read More
After the Maui wildfires: The road ahead. August 31, 2023 By Steven Bond-Smith, Daniela Bond-Smith, Carl Bonham, Leah Bremer, Kim Burnett, Makena Coffman, Peter Fuleky, Byron Gangnes, Rachel Inafuku, Ruben Juarez, Sumner La Croix, Colin Moore, Dylan Moore, Nori Tarui, Justin Tyndall, and Chris Wada The immediate recovery efforts from the devastating Maui wildfires continue, and at UHERO we share our community’s anguish over the… Read More
Managing retreat for sandy beach areas under sea level rise July 24, 2023 Abstract: Sea level rise (SLR) is projected to impact approximately one billion people by 2100. For many coastal communities, retreat is the most viable long-term option due to exposure risk under SLR and increased coastal hazards. Our research analyzes the costs of retreating coastal development at an iconic beach in Hawaiʻi that is experiencing severe… Read More
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… Read More
Perspectives from communities threatened by sea-level rise June 16, 2022 "Amid the growing threat of sea-level rise and coastal erosion of oceanfront communities around the world, University of Hawaiʻi at Mānoa researchers delved deeper into the response for coastal communities on Oʻahu. A recent survey of stakeholders discovered that what most respondents felt was currently important did not always match with what they felt should… Read More
Chart comparing what is currently important vs what interviewees perceive should be ideally prioritized Managing for diverse coastal uses and values under sea level rise: perspectives from O’ahu, Hawaiʻi June 7, 2022 Effective and equitable coastal decision-making under sea level rise requires managing for multiple coastal uses and values. A new publication led by UHERO's Environmental Policy and Planning Group analyzes how decision-makers in Hawaiʻi perceive diverse uses and values of beaches and coastlines to be important and how they see recognition of these uses and values ideally shaping… Read More
Managing for diverse coastal uses and values under sea level rise: perspectives from Oʻahu June 7, 2022 By Leah Bremer, Makena Coffman, Alisha Summers, Lisa Kelley, and Billy Kinney “That whole experience of bonding, the family, the fresh air, that's so critical. And we've lost a lot of that. As we lose the beaches, we lose that part of our culture, which is Hawaiʻi's culture. Whether it's a barbecue… or spend [ing]… Read More
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… Read More
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… Read More
Please join us! Carbon Taxes, Credits and Offsets Webinar (3/16) March 4, 2022 Join UHERO’s Makena Coffman for a webinar discussion on March 16, 2022 at 10-11 HST on the results of the 2020 Hawaii Carbon Pricing Study mandated by the Hawaii Legislature and the 2021 follow-up study. The title of the event is "Carbon Taxes, Credits and Offsets: Means for Climate Mitigation and Adaptation." Carbon taxes, credits and offsets can… Read More
Maui wind turbines by Tim Foster on Unsplash Are We Hitting Our Targets? A Look at Hawai‘i’s GHG Emissions August 11, 2021 By Makena Coffman, Maja Schjervheim, and Paul Bernstein Over the past three years, the State of Hawai‘i Department of Health has released a Hawai‘i Greenhouse Gas Emissions Report. This year’s report added an inventory for 2017, as well as projections through 2030 based on existing policies and trends. UHERO collaborated with ICF on this project and… Read More
Solar farm in Waianae 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… Read More
Recover to Resilience Steps Toward the Post-COVID Economy Recovery to Resilience: Steps Toward the Post-COVID Economy October 14, 2020 Wednesday, October 21, 8:00 am Register on Zoom and submit questions in advance HERE. Covid-19 has provoked the worst economic crisis since the Great Depression, and Hawai‘i now has the weakest economy in the nation, as a measure of GDP decline. Join us to discuss strategies to navigate the recession and set the stage for… Read More
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… Read More
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… Read More