Jay Apt

Biographic Data

ID6695005
NAMEJay Apt
GIVEN NAMESJay
FAMILY NAMEApt
SIGNATUREAPT J
AFFILIATIONSCarnegie Mellon University
ORCID0000-0002-6195-0355
VERIFIEDYes
TOTAL WORKS8
TOTAL CITATIONS1
AUTHOR COUNT8
EDITOR COUNT0
FIRST PUBLICATION YEAR2012
LATEST PUBLICATION YEAR2024
H-INDEX1

  • Hybrid heat pumps avoid extreme marginal abatement costs of electrifying peak heating loads in cold regions

    Open AccessSean Smillie, Parth Vaishnav et al.ARTICLEEnvironmental Research Letters2024

    Electrification with heat pumps is often cited as a preferred pathway to decarbonize US space heating in the transition to a net-zero energy system. However, fully electrifying building heat may significantly increase peak electric system loads during cold weather, thus challenging extensive adoption. A hybrid home heating system uses both heat pumps and conventional natural gas furnaces, where the gas appliance operates during peak heating perio…

  • Are high penetrations of commercial cogeneration good for society

    Open AccessJeremy Keen, Jeremy F Keen et al.ARTICLEEnvironmental Research Letters2016

    Low natural gas prices, market reports and evidence from New York State suggest that the number of commercial combined heat and power (CHP) installations in the United States will increase by 2%–9% annually over the next decade. We investigate how increasing commercial CHP penetrations may affect net emissions, the distribution network, and total system energy costs. We constructed an integrated planning and operations model that maximizes owner …

  • Geographic smoothing of solar PV: Results from Gujarat

    Open AccessKelly Klima, Jay AptARTICLEEnvironmental Research Letters2015

    We examine the potential for geographic smoothing of solar photovoltaic (PV) electricity generation using 13 months of observed power production from utility-scale plants in Gujarat, India. To our knowledge, this is the first published analysis of geographic smoothing of solar PV using actual generation data at high time resolution from utility-scale solar PV plants. We use geographic correlation and Fourier transform estimates of the power spect…

  • Consumer cost effectiveness of CO 2 mitigation policies in restructured electricity markets

    Open AccessJared Moore, Jay AptARTICLEEnvironmental Research Letters2014

    We examine the cost of carbon dioxide mitigation to consumers in restructured USA markets under two policy instruments, a carbon price and a renewable portfolio standard (RPS). To estimate the effect of policies on market clearing prices, we constructed hourly economic dispatch models of the generators in PJM and in ERCOT. We find that the cost effectiveness of policies for consumers is strongly dependent on the price of natural gas and on the ch…

  • What day-ahead reserves are needed in electric grids with high levels of wind power

    Open AccessBrandon Mauch, Jay Apt et al.ARTICLEEnvironmental Research Letters2013

    Day-ahead load and wind power forecasts provide useful information for operational decision making, but they are imperfect and forecast errors must be offset with operational reserves and balancing of (real time) energy. Procurement of these reserves is of great operational and financial importance in integrating large-scale wind power. We present a probabilistic method to determine net load forecast uncertainty for day-ahead wind and load foreca…

  • Incorporating seismic concerns in site selection for enhanced geothermal power generation

    Enes Hoşgör, Jay Apt et al.ARTICLEJournal of Risk Research2013Cited by: 1

    Enhanced (or engineered) geothermal systems (EGS) for generating electricity may provide significant reductions in greenhouse gas emissions, if they can be successfully sited. One potential threat to that siting is induced seismicity, which has led to EGS projects being stopped in Switzerland and Germany. We create and implement a framework for identifying regions with low risk of induced seismicity risk. Using a widely known and used model with …

  • The effect of long-distance interconnection on wind power variability

    Open AccessEmily Fertig, Jay Apt et al.ARTICLEEnvironmental Research Letters2012

    We use time- and frequency-domain techniques to quantify the extent to which long-distance interconnection of wind plants in the United States would reduce the variability of wind power output. Previous work has shown that interconnection of just a few wind plants across moderate distances could greatly reduce the ratio of fast- to slow-ramping generators in the balancing portfolio. We find that interconnection of aggregate regional wind plants w…

  • Cost analysis of stratospheric albedo modification delivery systems

    Open AccessJustin McClellan, Douglas Keith et al.ARTICLEEnvironmental Research Letters2012

    We perform engineering cost analyses of systems capable of delivering 1–5 million metric tonnes (Mt) of albedo modification material to altitudes of 18–30 km. The goal is to compare a range of delivery systems evaluated on a consistent cost basis. Cost estimates are developed with statistical cost estimating relationships based on historical costs of aerospace development programs and operations concepts using labor rates appropriate to the opera…