Cost benefits of optimizing hydrogen storage and methanation capacities for Power-to-Gas plants in dynamic operation

Gorre, Jachin; Ruoss, Fabian; Karjunen, Hannu; Schaffert, Johannes; Tynjälä, Tero

doi:10.1016/j.apenergy.2019.113967

Cited by 182 publications

(100 citation statements)

References 39 publications

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“…However, given the uncertainties in CAPEX development, and based on the sensitivity analysis of the learning curves, the overall impact of that parameter on SNG production costs is comparably low. Nonetheless, the sensitivity analysis also showed that additional cost reductions can be expected through an optimization of operating conditions, which is also found in comparative studies [104].…”

Section: Effects On Sng Production Costssupporting

confidence: 60%

Projecting cost development for future large-scale power-to-gas implementations by scaling effects

et al. 2020

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Power-togas (PtG) is widely expected to play a valuable role in future renewable energy systems. In addition to partly allowing a further utilization of the existing gas infrastructure for energy transport and storage, hydrogen or synthetic natural gas (SNG) from electric power represents a high-density energy carrier and important feedstock material for further processing. This premise leads to a significant demand for large-scale PtG plants, which was evaluated with an amount of up to 14.2 TWel at a global scale. Together with the upscaling of single-MW plants available today, this will enable to achieve appropriate cost reduction effects through technological learning. These effects were evaluated in the present paper via a holistic techno-economic assessment of different PtG plant configurations, resulting in the reduction of SNG production costs down to 100 €/MWhSNG by 2030 and below 60 €/MWhSNG by 2050, according to the supplying electricity source.

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Section: Effects On Sng Production Costssupporting

confidence: 60%

Projecting cost development for future large-scale power-to-gas implementations by scaling effects

et al. 2020

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“…Based on the results, it can be assumed, that higher LCR values could be applied to the reactor without losses in the product gas quality. This corresponds with results from the Zentrum für Sonnenenergie‐ und Wasserstoff (ZSW) for a tube bundle methanation reactor 9, 29.…”

Section: Technical Evaluation Of the Demo Sitessupporting

confidence: 81%

Renewable Power‐to‐Gas: A Technical and Economic Evaluation of Three Demo Sites Within the STORE&GO Project

Schlautmann

Böhm

Zauner

et al. 2021

Chemie Ingenieur Technik

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For a successful energy transition, Power‐to‐Gas (PtG) offers the opportunity to convert renewable electricity to substitute natural gas. This renewable synthetic natural gas (SNG) can be used for long‐term storage, transport, or can be integrated into other energy sectors. Main challenges for the commercial application of PtG are to achieve a high PtG process efficiency, dynamic operation capability, and low investment and production costs. Within the STORE&GO project, three demo sites were developed, operated, and evaluated. An overall efficiency of > 75 % is possible, the SNG production costs are expected to drop to less than 10 €‐Cent kWh−1 in 2050.

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“…Gorre et al [16] examines the potential of reducing SNG production costs by determining optimal capacities of intermediate hydrogen storage and methanation for three electricity supplies. The results indicated potential cost reductions of up to 17% in SNG production by implementing well-balanced components and interim storages.…”

Section: Background and Scopementioning

confidence: 99%

SNG Generation via Power to Gas Technology: Plant Design and Annual Performance Assessment

et al. 2020

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Power to gas (PtG) is an emerging technology that allows to overcome the issues due to the increasingly widespread use of intermittent renewable energy sources (IRES). Via water electrolysis, power surplus on the electric grid is converted into hydrogen or into synthetic natural gas (SNG) that can be directly injected in the natural gas network for long-term energy storage. The core units of the Power to synthetic natural gas (PtSNG) plant are the electrolyzer and the methanation reactors where the renewable electrolytic hydrogen is converted to synthetic natural gas by adding carbon dioxide. A technical issue of the PtSNG plant is the different dynamics of the electrolysis unit and the methanation unit. The use of a hydrogen storage system can help to decouple these two subsystems and to manage the methanation unit for assuring long operation time and reducing the number of shutdowns. The purpose of this paper is to evaluate the energy storage potential and the technical feasibility of the PtSNG concept to store intermittent renewable sources. Therefore, different plant sizes (1, 3, and 6 MW) have been defined and investigated by varying the ratio between the renewable electric energy sent to the plant and the total electric energy generated by the renewable energy source (RES) facility based on a 12 MW wind farm. The analysis has been carried out by developing a thermochemical and electrochemical model and a dynamic model. The first allows to predict the plant performance in steady state. The second allows to forecast the annual performance and the operation time of the plant by implementing the control strategy of the storage unit. The annual overall efficiencies are in the range of 42–44% low heating value (LHV basis). The plant load factor, i.e., the ratio between the annual chemical energy of the produced SNG and the plant capacity, results equal to 60.0%, 46.5%, and 35.4% for 1, 3, and 6 MW PtSNG sizes, respectively.

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Cost benefits of optimizing hydrogen storage and methanation capacities for Power-to-Gas plants in dynamic operation

Cited by 182 publications

References 39 publications

Projecting cost development for future large-scale power-to-gas implementations by scaling effects

Projecting cost development for future large-scale power-to-gas implementations by scaling effects

Renewable Power‐to‐Gas: A Technical and Economic Evaluation of Three Demo Sites Within the STORE&GO Project

SNG Generation via Power to Gas Technology: Plant Design and Annual Performance Assessment

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