Hydrogen Production at the Forecourt from Off-Peak Electricity and Its Role in Balancing the Grid

The rapid growth of renewable energy sources and their integration into the grid have been motivated by the depletion of fossil fuels and environmental issues. Unfortunately, the grid is unable to cope with the predicted growth of renewable energy which would lead to its instability. To solve this problem, energy storage devices could be used. Electrolytic hydrogen production from an electrolyser is considered a promising option since it is a clean energy source (zero emissions). Choosing flexible operation of an electrolyser (producing hydrogen during the off-peak electricity period and stopping at other times) could bring about many benefits like reducing the cost of hydrogen and helping to balance the electric systems. This paper investigates the price of hydrogen during flexible operation compared with continuous operation, while serving the customer (hydrogen filling station) without interruption. The optimization algorithm is applied to investigate the hydrogen station in both cases (flexible and continuous operation). Three different scenarios are tested to see whether the off-peak electricity price could enhance the reduction of the hydrogen cost. These scenarios are: Standard tariff (1 tier system) during the day (assumed 12 p/kWh) while still satisfying the demand for hydrogen; using off-peak electricity at a lower price (assumed 5 p/kWh) and shutting down the electrolyser at other times; using lower price electricity at off-peak times and high price electricity at other times. This study looks at Derna city, which is located on the coast of the Mediterranean Sea (32° 46′ 0 N, 22° 38′ 0 E) with a high potential for wind resource. Hourly wind speed data which were collected over 24½ years from 1990 to 2014 were in addition to data on hourly radiation and hourly electricity demand collected over a one-year period, together with the petrol station data.

• Abdulla Rahil
• Rupert Gammon
• Neil Brown

• Hydrogen filling station off-peak electricity
• renewable energy
• off-peak electricity
• electrolytic hydrogen.

[1] F. Gutiérrez-Martín, J. García-De María, A. Baïri and N. Laraqi, "Management strategies for surplus electricity loads using electrolytic hydrogen," International journal of hydrogen energy, vol 34, no 20, pp. 8468-8475, 2009.
[2] C. Mansilla, J. Louyrette, S. Albou, C. Bourasseau and S. Dautremont, "Economic competitiveness of off-peak hydrogen production today–A european comparison," Energy, vol 55, pp. 996-1001, 2013.
[3] D. Johansson, P. Franck and T. Berntsson, "Hydrogen production from biomass gasification in the oil refining industry–a system analysis," Energy, vol 38, no 1, pp. 212-227, 2012.
[4] M. Balat, "Potential importance of hydrogen as a future solution to environmental and transportation problems," International journal of hydrogen energy, vol 33, no 15, pp. 4013-4029, 2008.
[5] S. Sharma and S. K. Ghoshal, "Hydrogen the future transportation fuel: From production to applications," Renewable and sustainable energy reviews, vol 43, pp. 1151-1158, 3 2015.
[6] J. Alazemi and J. Andrews, "Automotive hydrogen fuelling stations: An international review," Renewable and sustainable energy reviews, vol 48, pp. 483-499, 8 2015.
[7] Wood, H. He, T. Joia, M. Krivy and D. Steedman, "Communication—Electrolysis at high efficiency with remarkable hydrogen production rates," Journal of the electrochemical society, vol 163, no 5, pp. F327-F329, 2016.
[8] J. Ivy, "Summary of electrolytic hydrogen production: Milestone completion report," 2004.
[9] P. Caumon, M. L. Zulueta, J. Louyrette, S. Albou, C. Bourasseau and C. Mansilla, "Flexible hydrogen production implementation in the french power system: Expected impacts at the french and european levels," Energy, vol 81, pp. 556-562, 2015.
[10] R. Loisel, "Power system flexibility with electricity storage technologies: A technical–economic assessment of a large-scale storage facility," International journal of electrical power & energy systems, vol 42, no 1, pp. 542-552, 2012.
[11] Dincer and C. Acar, "Review and evaluation of hydrogen production methods for better sustainability," International journal of hydrogen energy, vol 40, no 34, pp. 11094-11111, 2015.
[12] González, E. McKeogh and B. Gallachoir, "The role of hydrogen in high wind energy penetration electricity systems: The irish case," Renewable energy, vol 29, no 4, pp. 471-489, 2004.
[13] E. Troncoso and M. Newborough, "Electrolysers for mitigating wind curtailment and producing ‘green’ merchant hydrogen," International journal of hydrogen energy, vol 36, no 1, pp. 120-134, 1 2011.
[14] C. Jørgensen and S. Ropenus, "Production price of hydrogen from grid connected electrolysis in a power market with high wind penetration." International journal of hydrogen energy, vol 33, no 20, pp. 5335-5344, 10 2008.
[15] G. Naterer, M. Fowler, J. Cotton and K. Gabriel, "Synergistic roles of off-peak electrolysis and thermochemical production of hydrogen from nuclear energy in canada," International journal of hydrogen energy, vol 33, no 23, pp. 6849-6857, 2008.
[16] J.I. Levene, M.K. Mann, R. Margolis, and A. Milbrandt, "Http://Www.nrel.gov/docs/fy05osti/37612.pdf," In Orlando, Florida, 2005.
[17] W. Xiao, Y. Cheng, W. J. Lee, V. Chen and S. Charoensri, "Hydrogen filling station design for fuel cell vehicles," Industry applications, IEEE transactions on, vol 47, no 1, pp. 245-251, 2011.
[18] L. Zhao and J. Brouwer, "Dynamic operation and feasibility study of a self-sustainable hydrogen fueling station using renewable energy sources," International journal of hydrogen energy, vol 40, no 10, pp. 3822-3837, 2015.
[19] R. S. El-Emam, H. Ozcan and I. Dincer, "Comparative cost evaluation of nuclear hydrogen production methods with the hydrogen economy evaluation program (HEEP)," International journal of hydrogen energy, vol 40, no 34, pp. 11168-11177, 2015.
[20] C. Acar and I. Dincer, "Impact assessment and efficiency evaluation of hydrogen production methods," International journal of energy research, vol 39, no 13, pp. 1757-1768, 2015.