A novel system for large-scale storage of electricity as synthetic natural gas using reversible pressurized solid oxide cells

Giacomo Butera*, Søren Højgaard Jensen, Lasse Røngaard Clausen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The ongoing reduction of greenhouse gas emissions entails increased use of intermittent renewable energy technologies such as wind and solar. This raises the need for cost-effective and efficient electricity storage. In particular seasonal variations in supply and demand will require tremendous storage capacity. In this paper we present a truly large-scale electricity storage system which uses pressurized reversible solid oxide cells combined with catalytic reactors to store electricity as synthetic natural gas. By storing the produced gas in existing natural gas grids the system can create a strong and efficient link between the electricity and gas markets. In addition, the system is able to operate reversibly using gas from the grid to satisfy the electric power demand.

The system performance is analyzed with a component-based thermodynamic modeling tool which shows that electricity can be stored as synthetic natural gas with an energy efficiency of 89%. The gas to electricity efficiency is equally high, resulting in a round-trip storage efficiency of 80% (DC-to-DC).

Original languageEnglish
JournalEnergy
Volume166
Pages (from-to)738-754
ISSN0360-5442
DOIs
Publication statusPublished - 2018

Keywords

  • Energy storage
  • Solid oxide cells
  • Natural gas grid
  • Internal methanation
  • Bio-syngas upgrading

Cite this

@article{3077745ee65a40279a97c6e3235ebf47,
title = "A novel system for large-scale storage of electricity as synthetic natural gas using reversible pressurized solid oxide cells",
abstract = "The ongoing reduction of greenhouse gas emissions entails increased use of intermittent renewable energy technologies such as wind and solar. This raises the need for cost-effective and efficient electricity storage. In particular seasonal variations in supply and demand will require tremendous storage capacity. In this paper we present a truly large-scale electricity storage system which uses pressurized reversible solid oxide cells combined with catalytic reactors to store electricity as synthetic natural gas. By storing the produced gas in existing natural gas grids the system can create a strong and efficient link between the electricity and gas markets. In addition, the system is able to operate reversibly using gas from the grid to satisfy the electric power demand.The system performance is analyzed with a component-based thermodynamic modeling tool which shows that electricity can be stored as synthetic natural gas with an energy efficiency of 89{\%}. The gas to electricity efficiency is equally high, resulting in a round-trip storage efficiency of 80{\%} (DC-to-DC).",
keywords = "Energy storage, Solid oxide cells, Natural gas grid, Internal methanation, Bio-syngas upgrading",
author = "Giacomo Butera and Jensen, {S{\o}ren H{\o}jgaard} and Clausen, {Lasse R{\o}ngaard}",
year = "2018",
doi = "10.1016/j.energy.2018.10.079",
language = "English",
volume = "166",
pages = "738--754",
journal = "Energy",
issn = "0360-5442",
publisher = "Elsevier",

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TY - JOUR

T1 - A novel system for large-scale storage of electricity as synthetic natural gas using reversible pressurized solid oxide cells

AU - Butera, Giacomo

AU - Jensen, Søren Højgaard

AU - Clausen, Lasse Røngaard

PY - 2018

Y1 - 2018

N2 - The ongoing reduction of greenhouse gas emissions entails increased use of intermittent renewable energy technologies such as wind and solar. This raises the need for cost-effective and efficient electricity storage. In particular seasonal variations in supply and demand will require tremendous storage capacity. In this paper we present a truly large-scale electricity storage system which uses pressurized reversible solid oxide cells combined with catalytic reactors to store electricity as synthetic natural gas. By storing the produced gas in existing natural gas grids the system can create a strong and efficient link between the electricity and gas markets. In addition, the system is able to operate reversibly using gas from the grid to satisfy the electric power demand.The system performance is analyzed with a component-based thermodynamic modeling tool which shows that electricity can be stored as synthetic natural gas with an energy efficiency of 89%. The gas to electricity efficiency is equally high, resulting in a round-trip storage efficiency of 80% (DC-to-DC).

AB - The ongoing reduction of greenhouse gas emissions entails increased use of intermittent renewable energy technologies such as wind and solar. This raises the need for cost-effective and efficient electricity storage. In particular seasonal variations in supply and demand will require tremendous storage capacity. In this paper we present a truly large-scale electricity storage system which uses pressurized reversible solid oxide cells combined with catalytic reactors to store electricity as synthetic natural gas. By storing the produced gas in existing natural gas grids the system can create a strong and efficient link between the electricity and gas markets. In addition, the system is able to operate reversibly using gas from the grid to satisfy the electric power demand.The system performance is analyzed with a component-based thermodynamic modeling tool which shows that electricity can be stored as synthetic natural gas with an energy efficiency of 89%. The gas to electricity efficiency is equally high, resulting in a round-trip storage efficiency of 80% (DC-to-DC).

KW - Energy storage

KW - Solid oxide cells

KW - Natural gas grid

KW - Internal methanation

KW - Bio-syngas upgrading

U2 - 10.1016/j.energy.2018.10.079

DO - 10.1016/j.energy.2018.10.079

M3 - Journal article

VL - 166

SP - 738

EP - 754

JO - Energy

JF - Energy

SN - 0360-5442

ER -