National Priorities for Research, Technological Development and Training of

Human Resources for the Energy Sector

Working Group (mesa): 3B, H2 Energy Storage

R&D Opportunities

Date: 13 - 17 November 2017

Workshop Expectations & Goals

• Focus on Energy Storage with Grid applications• Do not focus on mobile applications, but CO2 mitigation can be included, if applicable

• Identifying R&D opportunities to be reported to Mexican Energy Department and National Research Council • The Department would eventually develop proposals in the first quarter of next year.

• Each Working Group to identify and document the opportunities• Stakeholders with an international perspective

• NRC published a call for R&D proposals for flow batteries, grid scale and fuel cells. Opinion or comments on Policies and human resources (training).

• Comment on how the project would create advanced degree (Masters/PhD), specialized training and technical subjects for students

• Final report will be concise, graphical and ideal for its ample distribution to SENER, academy, research centers and electrical industry

Agenda for Table 3/Panel B: H2 Energy Storage

Agenda for Table 3/Panel B: H2 Energy Storage

Where does H2 fit?

• Hydrogen goes beyond electrons to electrons; value-added sink for electrons rather than a capacitor

• Making fair comparisons is difficult, so many peripheral impacts.

Conceptual H2 at Scale Energy System*

*Illustrative example, not comprehensive

• Attributes

– Increased renewables

– Clean, carbon-neutral industry and transportation

• Benefits

– Economic

– Security

– Environmental

P2G: H2 + CO2 + Biology → ProductsProject Summary (NREL/SoCal Gas)

• Generate hydrogen (H2) using inexpensive renewable electricity via water electrolysis

• Combine CO2 and H2 in 20 ft. tall bioreactor where organisms produce methane

Project Objectives

• Generate pipeline quality renewable natural gas as energy storage to enable higher penetrations of renewable electricity

• Demonstrate daily operation under varying hydrogen production via solar PV profile

• Validate overall system efficiency and costs from PV to H2 to CH4 to H2 to Electricity

Drivers for Grid-Scale Energy Storage (USA)

How do we describe and show value of H2?

• Can we assume a future with 1-2 cents per kWh?

• Everyone asks about electrolyzer, FC and round-trip efficiency• LHV (33.3 kWh/kg)?• HHV (39.4 kWh/kg)?• Or simply 50 - 55 kWh/kg for large-scale (MW) electrolyzer systems?• For example, 50% (LHV) efficient fuel cells return 16 kWh/kg H2

• Hydrogen in terms of other products and applications?• Beyond electrons-to-electrons • Renewable natural gas, ammonia, synthetic fuels and carbon-based products

• How do describe and demonstrate value added?

Benchmarking

U.S. DOE FCTO Workshop & Meeting Proceedings

• Hydrogen Production

• Storage

• Hydrogen Energy Storage for Grid and Transportation Services

• Safety Codes & Standardshttps://energy.gov/eere/fuelcells/workshop-and-meeting-proceedings

California Hydrogen Business Council

• Power to Gas: The Case for Hydrogenhttps://californiahydrogen.org/sites/default/files/CHBC%20Hydrogen%20Energy%20Storage%20White%20Paper%20FINAL.pdf

Questions to Consider

• What benefits can hydrogen bring to the Mexican electricity infrastructure?

• What opportunities does hydrogen represent for the Mexican energy sector?

• What are the knowledge gaps for Mexico concerning hydrogen technologies developed in other regions?

Format

Working Group (mesa): 3B, H2 Energy Storage R&D Opportunities

• Benefits and impacts: Grid support enabling higher penetrations of renewable energy

• Challenges: Reduce cost, advanced grid support functionalityPower Conversion

• Benefits and impacts:

• Challenges:Short name of R&D

Opportunity

• Benefits and impacts:

• Challenges:Short name of R&D

Opportunity

Working Group (mesa): 3B, H2 Energy Storage R&D Opportunities

Summary of Conclusions

• Hydrogen production, compression, storage and multiple end-use applications are well known and established (TRL9), but costs remain high

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