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H2@Scale and Tightly -Coupled Nuclear-Renewable Hybrid ... · The H2@Scale concept supports both...
Transcript of H2@Scale and Tightly -Coupled Nuclear-Renewable Hybrid ... · The H2@Scale concept supports both...
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H2@Scale and Tightly-Coupled Nuclear-Renewable Hybrid Energy Systems
Mark F. Ruth, Jill Engel-Cox
October 2, 2018
6th International Conference onNuclear and Renewable Energy Resources
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NREL | 2www.nrel.gov/about
Mission: NREL advances the science and engineering of energy efficiency, sustainable transportation, and renewable power technologies and provides the knowledge to integrate and optimize energy systems.Example Technology Areas:
• 1800 employees, plus 400 postdoctoral researchers, interns, visiting professionals, and subcontractors• 327-acre campus in Golden & 305-acre National Wind Technology Center 13 miles north• 61 R&D 100 awards. More than 1000 scientific and technical materials published annually
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www.jisea.org
Connecting technologies, economic sectors, and continents to catalyze the
transition to the 21st century energy economy.
JISEAJoint Institute for
Strategic Energy Analysis
Founding Members
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Energy System is Evolving Rapidly
• Renewable electron prices dropping precipitously
• Penetration increasing at fast rate
Source: (Arun Majumdar) 1. DOE EERE Sunshot Q1’15 Report, 2. DOE EERE Wind Report, 2015
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Electricity Prices Dropping
Source: Potomac Economics 2017 State of the Market Report for the MISO Electricity Market – Analytic Appendix (June 2018)
• Low-cost, flexiblenatural gasgenerationreducing averageenergy price
• More hours withenergy at very lowand very highprices
• Other revenuestreams (e.g.,capacity, services)are becomingmore critical
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Impacting Generation Mix
4.7
5.5
7.4
3.5 3.4
Nuclear Plants at Risk by 2030, or Recently Retired (GW) 1
1 Source: U.S. DOE Quadrennial Energy Review, 2017
2.1
1.6
• Over 20 GW of existing U.S. nuclear power generation is at risk of early retirement
• Alternative income streams may reduce retirements
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Conceptual H2@Scale Energy System
7
*Illustrative example, not comprehensive
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Global Hydrogen Potential
“Agencies should invest in early-stage, innovative technologies that show promise in harnessing American energy resources safely and efficiently.”
-Aug. 17, 2017 OMB/OSTP MemoSource: Hydrogen Council
• Hydrogen Council estimates a 10-fold increase in global hydrogen use by 2050
• Key opportunities are transportation, industrial energy, and as a feedstock for chemical processing
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MAKE MOVE USE
Increased Low Cost Hydrogen
Production
More Efficient Hydrogen
Transmission
Low Cost Value-added Applications
STOREImproved Bulk Storage Technologies
H2@Scale: U.S. Initiative
• Advancing technology to increase revenue across multiple sectors
• Industry and government co-funded projects
• Accelerating early stage research & development
Source: Satyapal, Sunita. “Hydrogen and Fuel Cell Program Overview” Presented at the Fuel Cell Technologies Office’s Annual Merit Review. (June 13, 2018) https://www.hydrogen.energy.gov/pdfs/review18/01_satyapal_plenary_2018_amr.pdf
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N-R HESs Producing Hydrogen
• Analyzed the economic potential of two tightly-coupled nuclear-renewable hybrid energy systems producing hydrogen
• High temperature electrolysis (HTE) integrated via both thermal and electrical energy
• Low temperature electrolysis (LTE) integrated via electrical energy only
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
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N-R HESs Producing Hydrogen
• Analyzed the economic potential of two tightly-coupled nuclear-renewable hybrid energy systems producing hydrogen
• High temperature electrolysis (HTE) integrated via both thermal and electrical energy
• Low temperature electrolysis (LTE) integrated via electrical energy only
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
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High Temperature Electrolysis N-R HES: Optimal, Profitable Configurations
Primary Elec. Price Set Volatile Elec. Price Set
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
HTE: High temp electrolyzerNR: Nuclear reactorRE: Renewable electricity generationTPC: Thermal power cycle
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Primary Elec. Price Set Volatile Elec. Price Set
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
Full N-R HES
No WindNuclear Reactor & HTE
Nuclear and Wind
Electricity
Wind Power Only HTE: High temp electrolyzer
NR: Nuclear reactorRE: Renewable electricity generationTPC: Thermal power cycle
High Temperature Electrolysis N-R HES: Optimal, Profitable Configurations
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Primary Elec. Price Set Volatile Elec. Price Set • Many combinations of electricity and hydrogen prices have profitable configurations
• Under volatile electricity prices• More cases at lower
hydrogen prices are profitable
• More scenarios with nuclear power that provides electricity and supports grid resources
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
Full N-R HES
All but wind
Nuclear Reactor & HTE
Nuclear and Wind
Electricity
Wind Power Only HTE: High temp electrolyzer
NR: Nuclear reactorRE: Renewable electricity generationTPC: Thermal power cycle
High Temperature Electrolysis N-R HES: Optimal, Profitable Configurations
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HTE N-R HES: Capacity Payments$50 / kW-yr $100 / kW-yr $150 / kW-yr
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
• Higher capacity payments lead to more optimal configurations that provide grid support
• But a sufficient hydrogen price is still critical
High Temperature Electrolysis N-R HES: Impact of Capacity Payments
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N-R HESs Producing Hydrogen
• Analyzed the economic potential of two tightly-coupled nuclear-renewable hybrid energy systems producing hydrogen
• High temperature electrolysis (HTE) integrated via both thermal and electrical energy
• Low temperature electrolysis (LTE) integrated via electrical energy only
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
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Primary Elec. Price Set Volatile Elec. Price Set
Low Temperature Electrolysis N-R HES: Optimal, Profitable Configurations
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
Full N-R HES
LTE Only
Nuclear and Wind
Electricity
Wind Power Only
LTE: Low temp electrolyzerNR: Nuclear reactorRE: Renewable electricity generationTPC: Thermal power cycle
LTE Only
Nuclear Reactor,
Power Cycle, LTE
Full N-R HES
Wind Power, LTE
• More low-price hydrogen cases are profitable under the volatile electricity price set
• Configurations with the nuclear reactor, the thermal power cycle, and the LTE adjust their product slate each hour
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Low Temperature Electrolysis N-R HES: Purchasing Electricity
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
Primary Elec. Price Set
• Optimal configurations purchase electricity especially when electricity prices are low
• Configurations with wind power generation offset purchases
Full N-R HES
Wind Power, LTE LTE Only
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LTE: Flexibility Increases ProfitabilityPrimary Elec. Price Set Volatile Elec. Price Set
Low Temperature Electrolysis N-R HES: Flexibility Increases Profitability (at Times)
Primary Elec. Prices Volatile Elec. Prices
Source: Ruth, Mark, Cutler, Dylan, Flores-Espino, Francisco, and Stark, Greg. The Economic Potential of Nuclear-Renewable Hybrid Energy Systems Producing Hydrogen (2017). NREL/TP-6A50-66764. http://www.nrel.gov/docs/fy17osti/66764.pdf
• More beneficial when electricity prices are volatile
• Beneficial at high electricity price multipliers and hydrogen prices between $2.50 and $3.75/kg
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Conclusions
• Hydrogen has the potential to become an energy carrier that complements electricity.
• Analysis of nuclear-renewable hybrid energy systems (N-R HESs) producing hydrogen indicate that they may be economically viable for some market conditions. Key drivers include:– Hydrogen price– Electricity price volatility– Availability of a capacity payment
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www.nrel.gov
Thank you
NREL/PR-6A20-72022
This work was authored by the National Renewable Energy Laboratory, managed and operated by Alliance for Sustainable Energy, LLC for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. Funding provided by U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Office of Strategic Programs and Fuel Cells Technology Office. The views expressed in the article do not necessarily represent the views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for U.S. Government purposes.