This page has only limited features, please log in for full access.
Summary Jurisdictions and industries are setting ambitious goals to decarbonize energy systems. Low-cost wind, solar, and natural gas and the resultant dynamic electric grid require energy technologies to adapt in order to meet key attributes for modern energy systems: resilience, reliability, security, affordability, flexibility, and sustainability. When considering energy sources independently and competitively, value-added synergies among energy technologies may be overlooked for meeting demanding, multidimensional requirements. This paper presents novel concepts for tightly coupled hybrid energy systems that leverage capabilities of diverse energy generators, including renewable, nuclear, and fossil with carbon capture, to provide power, heat, mobility, and other energy services. The paper also presents a framework for engineering-based modeling and analysis for complex optimization of energy generation, transmission, services, processes and products, and market interactions. New modeling capabilities are needed to adequately represent multi-input, multi-output tightly coupled hybrid energy systems that utilize multiple feedstocks to create multiple products and services in novel and synergistic ways through increased coordination of energy systems and tightly coupled hybrid system configurations.
Douglas J. Arent; Shannon M. Bragg-Sitton; David C. Miller; Thomas J. Tarka; Jill A. Engel-Cox; Richard D. Boardman; Peter C. Balash; Mark F. Ruth; Jordan Cox; David J. Garfield. Multi-input, Multi-output Hybrid Energy Systems. Joule 2020, 5, 47 -58.
AMA StyleDouglas J. Arent, Shannon M. Bragg-Sitton, David C. Miller, Thomas J. Tarka, Jill A. Engel-Cox, Richard D. Boardman, Peter C. Balash, Mark F. Ruth, Jordan Cox, David J. Garfield. Multi-input, Multi-output Hybrid Energy Systems. Joule. 2020; 5 (1):47-58.
Chicago/Turabian StyleDouglas J. Arent; Shannon M. Bragg-Sitton; David C. Miller; Thomas J. Tarka; Jill A. Engel-Cox; Richard D. Boardman; Peter C. Balash; Mark F. Ruth; Jordan Cox; David J. Garfield. 2020. "Multi-input, Multi-output Hybrid Energy Systems." Joule 5, no. 1: 47-58.
The New Concepts Incubator team at the National Renewable Energy Laboratory (NREL) developed a three-stage online platform for travel diary collection, personal travel plan optimization and travel itinerary visualization. In the first stage, users provide a travel diary for the previous day through an interactive map and calendar interface and survey for travel attitudes and behaviors. One or more days later, users are invited via email to engage in a second stage where they view a personal mobility dashboard displaying recommended travel itineraries generated from a novel framework that optimizes travel outcomes over a sequence of interrelated trips. A week or more after viewing these recommended travel itineraries on the dashboard, users are emailed again to engage in a third stage where they complete a final survey about travel attitudes and behaviors. A usability study of the platform conducted online showed that, in general, users found the system valuable for informing their travel decisions. A total of 274 individuals were recruited through Amazon Mechanical Turk, an online survey platform, to participate in a transportation study using this platform. On average, the platform distilled 65 feasible travel plans per individual into two recommended itineraries, each optimal according to one or moremore » outcomes and dependent on the fixed times and locations from the travel diary. For 45 percent of users, the trip recommendation algorithm returned only a single, typically automobile-centric, itinerary because there were no other viable alternative transportation modes available. Platform users generally agreed that the dashboard was enjoyable and easy to use, and that it would be a helpful tool in adopting new travel behaviors. Users generally agreed most that the time, cost and user preferred recommendations 'made sense' to them, and were most willing to implement these itineraries. Platform users typically expressed low willingness to try the carbon and calories optimized itineraries. Of the platform users who viewed the dashboard, 13 percent reported changing their travel behavior, most adopting the time, calories or carbon optimized itineraries. While the algorithm incorporates a wealth of travel data obtained from online APIs pertaining to a travelers route such as historic traffic condition data, public transit time-tables, and bike path routes, open-ended responses from users expressed an interest in the integration of even more fine-grained traffic data and the ability to dynamically model the effect of changes in travel times. Users also commonly expressed concerns over the safety of walking and biking recommendations. Responses indicate that more information about the amenities available to cyclists and pedestrians (sidewalks, shade from trees, access to food) and routes that avoid areas of perceived elevated danger would reduce barriers to implementing these recommendations. More accurate representations of personal vehicle trips (based on vehicle make and model, implications of parking) and the identification of routes that optimize caloric intensity (seeking out elevation changes or longer walks to public transit) are promising avenues for future research.« less
Ted Kwasnik; Scott P. Carmichael; Douglas J Arent; Joshua Sperling; Steven Isley. The Trip Itinerary Optimization Platform: A Framework for Personalized Travel Information. The Trip Itinerary Optimization Platform: A Framework for Personalized Travel Information 2017, 1 .
AMA StyleTed Kwasnik, Scott P. Carmichael, Douglas J Arent, Joshua Sperling, Steven Isley. The Trip Itinerary Optimization Platform: A Framework for Personalized Travel Information. The Trip Itinerary Optimization Platform: A Framework for Personalized Travel Information. 2017; ():1.
Chicago/Turabian StyleTed Kwasnik; Scott P. Carmichael; Douglas J Arent; Joshua Sperling; Steven Isley. 2017. "The Trip Itinerary Optimization Platform: A Framework for Personalized Travel Information." The Trip Itinerary Optimization Platform: A Framework for Personalized Travel Information , no. : 1.
Consumers who wish to consider product attributes like carbon footprints in their purchasing decisions are often blocked from meaningful action by a lack of information. We conducted a randomized controlled trial at a grocery store to evaluate the effects of providing such product attribute and carbon footprint information via augmented reality (AR) displays on bottled water and breakfast cereal, two frequently purchased goods. Using an AR smartphone app that combines comparative and detailed product information into personalized data and recommendations, a 23% reduction in carbon footprint was found for bottled water, and non-significant reductions for breakfast cereal. However, AR informed choice lead to healthier cereal purchases with an average of 32% less sugar, 15% less fat, and 9.8% less sodium. This research suggests that AR techniques can help facilitate complex decision-making and lead to better choices.
Steven Charles Isley; Robert Ketcham; Douglas J Arent. Using augmented reality to inform consumer choice and lower carbon footprints. Environmental Research Letters 2017, 12, 064002 .
AMA StyleSteven Charles Isley, Robert Ketcham, Douglas J Arent. Using augmented reality to inform consumer choice and lower carbon footprints. Environmental Research Letters. 2017; 12 (6):064002.
Chicago/Turabian StyleSteven Charles Isley; Robert Ketcham; Douglas J Arent. 2017. "Using augmented reality to inform consumer choice and lower carbon footprints." Environmental Research Letters 12, no. 6: 064002.
This paper reviews recent developments in the production and use of unconventional natural gas in the United States with a focus on water and greenhouse gas emission implications. If unconventional natural gas in the U.S. is produced responsibly, transported and distributed with little leakage, and incorporated into integrated energy systems that are designed for future resiliency, it could play a significant role in realizing a more sustainable energy future; however, the increased use of natural gas as a substitute for more carbon intensive fuels will alone not substantially alter world carbon dioxide concentration projections. This paper reviews recent developments in the production and use of unconventional natural gas in the United States with a focus on environmental impacts. Specifically, we focus on water management and greenhouse gas emission implications. If unconventional natural gas in the United States is produced responsibly, transported and distributed with little leakage, and incorporated into integrated energy systems that are designed for future resiliency, it could play a significant role in realizing a more sustainable energy future. The cutting-edge of industry water management practices gives a picture of how this transition is unfolding, although much opportunity remains to minimize water use and related environmental impacts. The role of natural gas to mitigate climate forcing is less clear. While natural gas has low CO2 emissions upon direct use, methane leakage and long term climate effects lead to the conclusion that increased use of natural gas as a substitute for more carbon intensive fuels will not substantially alter world carbon dioxide concentration projections, and that other zero or low carbon energy sources will be needed to limit GHG concentrations. We conclude with some possible avenues for further work.
Douglas Arent; Jeffrey Logan; Jordan Macknick; William Boyd; Kenneth Medlock; Francis O’Sullivan; Jae Edmonds; Leon Clarke; Hillard Huntington; Garvin Heath; Patricia Statwick; Morgan Bazilian. A review of water and greenhouse gas impacts of unconventional natural gas development in the United States. MRS Energy & Sustainability 2015, 2, 1 .
AMA StyleDouglas Arent, Jeffrey Logan, Jordan Macknick, William Boyd, Kenneth Medlock, Francis O’Sullivan, Jae Edmonds, Leon Clarke, Hillard Huntington, Garvin Heath, Patricia Statwick, Morgan Bazilian. A review of water and greenhouse gas impacts of unconventional natural gas development in the United States. MRS Energy & Sustainability. 2015; 2 (1):1.
Chicago/Turabian StyleDouglas Arent; Jeffrey Logan; Jordan Macknick; William Boyd; Kenneth Medlock; Francis O’Sullivan; Jae Edmonds; Leon Clarke; Hillard Huntington; Garvin Heath; Patricia Statwick; Morgan Bazilian. 2015. "A review of water and greenhouse gas impacts of unconventional natural gas development in the United States." MRS Energy & Sustainability 2, no. 1: 1.
Using the IMAGE/TIMER (The Targets IMage Energy Regional) long-term integrated assessment model, this paper explores the regional and global potential of offshore wind to contribute to global electricity production. We develop long-term cost supply curve for offshore wind, a representation of the potential suitable for inclusion in global integrated assessment models. For this, we combine available data on resource potential and cost estimates to estimate regional and global characteristics of offshore wind electricity generation. We find that for 2050, a baseline scenario would include about 4% of the total electricity production based on offshore wind. The findings also show that in most regions, technical potential is not a limiting factor. In some regions, that have a seriously constrained resource base for onshore wind, offshore wind could provide a key source of renewable energy, including South-East Asia, Indonesia and Brazil.
David E.H.J. Gernaat; Detlef P. Van Vuuren; Jasper Van Vliet; Patrick Sullivan; Douglas J. Arent. Global long-term cost dynamics of offshore wind electricity generation. Energy 2014, 76, 663 -672.
AMA StyleDavid E.H.J. Gernaat, Detlef P. Van Vuuren, Jasper Van Vliet, Patrick Sullivan, Douglas J. Arent. Global long-term cost dynamics of offshore wind electricity generation. Energy. 2014; 76 ():663-672.
Chicago/Turabian StyleDavid E.H.J. Gernaat; Detlef P. Van Vuuren; Jasper Van Vliet; Patrick Sullivan; Douglas J. Arent. 2014. "Global long-term cost dynamics of offshore wind electricity generation." Energy 76, no. : 663-672.
Jeffrey Logan; Anthony Lopez; Trieu Mai; Carolyn Davidson; Morgan Bazilian; Douglas Arent. Natural gas scenarios in the U.S. power sector. Energy Economics 2013, 40, 183 -195.
AMA StyleJeffrey Logan, Anthony Lopez, Trieu Mai, Carolyn Davidson, Morgan Bazilian, Douglas Arent. Natural gas scenarios in the U.S. power sector. Energy Economics. 2013; 40 ():183-195.
Chicago/Turabian StyleJeffrey Logan; Anthony Lopez; Trieu Mai; Carolyn Davidson; Morgan Bazilian; Douglas Arent. 2013. "Natural gas scenarios in the U.S. power sector." Energy Economics 40, no. : 183-195.
Morgan Bazilian; Ryan Davis; Philip T. Pienkos; Douglas Arent. The Energy-Water-Food Nexus Through the Lens of Algal Systems. Industrial Biotechnology 2013, 9, 158 -162.
AMA StyleMorgan Bazilian, Ryan Davis, Philip T. Pienkos, Douglas Arent. The Energy-Water-Food Nexus Through the Lens of Algal Systems. Industrial Biotechnology. 2013; 9 (4):158-162.
Chicago/Turabian StyleMorgan Bazilian; Ryan Davis; Philip T. Pienkos; Douglas Arent. 2013. "The Energy-Water-Food Nexus Through the Lens of Algal Systems." Industrial Biotechnology 9, no. 4: 158-162.
Nations and regions need to share lessons about the best ways to create enabling policies, regulations, and markets that get the most social benefit out of power systems and incent the necessary investments.
Morgan Bazilian; Mackay Miller; Reid Detchon; Michael Liebreich; William Blyth; Matthew Futch; Vijay Modi; Lawrence Jones; Brent Barkett; Mark Howells; Iain MacGill; Daniel M. Kammen; Trieu Mai; Matthew Wittenstein; Sonia Aggarwal; Mark O’Malley; Juan Pablo Carvallo; Manuel Welsch; Graham Pugh; Rick Weston; Douglas J. Arent. Accelerating the Global Transformation to 21st Century Power Systems. The Electricity Journal 2013, 26, 39 -51.
AMA StyleMorgan Bazilian, Mackay Miller, Reid Detchon, Michael Liebreich, William Blyth, Matthew Futch, Vijay Modi, Lawrence Jones, Brent Barkett, Mark Howells, Iain MacGill, Daniel M. Kammen, Trieu Mai, Matthew Wittenstein, Sonia Aggarwal, Mark O’Malley, Juan Pablo Carvallo, Manuel Welsch, Graham Pugh, Rick Weston, Douglas J. Arent. Accelerating the Global Transformation to 21st Century Power Systems. The Electricity Journal. 2013; 26 (6):39-51.
Chicago/Turabian StyleMorgan Bazilian; Mackay Miller; Reid Detchon; Michael Liebreich; William Blyth; Matthew Futch; Vijay Modi; Lawrence Jones; Brent Barkett; Mark Howells; Iain MacGill; Daniel M. Kammen; Trieu Mai; Matthew Wittenstein; Sonia Aggarwal; Mark O’Malley; Juan Pablo Carvallo; Manuel Welsch; Graham Pugh; Rick Weston; Douglas J. Arent. 2013. "Accelerating the Global Transformation to 21st Century Power Systems." The Electricity Journal 26, no. 6: 39-51.