Power-to-X Technologies: Pioneering the Future of Sustainable Energy Conversion and Storage

Dear Colleagues,

In the continuous pursuit of decarbonizing the main energy sectors, Power-to-X  technologies emerge as a pivotal solution by utilizing surplus renewable energy to produce fuels, chemicals, heat, and other energy carriers. The always increasing efforts of European countries and others worldwide to enhance the sharing of renewable energy production is accompanied by the increasing adoption of non-programmable renewable energy sources, such as solar and wind. The benefits of this shift are evident: energy diversification, reduced emissions, and the strengthening of local green economies. However, this shift also introduces significant challenges, notably managing the excess energy generated and maintaining a balance between demand and supply. This discrepancy often results in additional network failures and higher management costs, which are typically passed on to consumers. By adopting the Power-to-X strategy, one can exploit renewable power excess to produce useful energy vectors, thus avoiding the mentioned drawbacks. This Special Issue seeks to explore the innovative integration of Power-to-X technologies within different systems, examining their potential to enhance energy efficiency and reduce environmental impacts in line with the global sustainability goals.

This Special Issue welcomes the submission of research that focuses on leveraging the renewable power excess in different forms and the energy, environmental and/or economic impact of the solutions proposed. The aim of this Special Issue is indeed to gather cutting-edge research that explores the utilization of Power-to-X technologies across various applications, emphasizing the integration and optimization of these technologies within smart energy networks. We invite contributions that cover, but are not limited to, the following topics:

1. Dynamic modelling and optimization of Power-to-X systems integrated with renewable energy sources.
2. Fourth and fifth generation district heating and cooling networks fed by renewables and exploiting excess of renewable power.
3. Smart energy grids integrated by renewables for matching the power demand of different users, namely buildings, electric vehicles, and electric facilities.
4. Flexibility analyses on power and gas grids.
5. Control strategies or solutions for peak shaving and peak shifting, with the aim of avoiding grid unbalancing and overvoltage.
6. Advanced energy storage systems, also including Power-to-Power, CAES, flywheels, and supercapacitors.
7. Thermally driven and electrically driven water desalination systems using renewable energies.
8. Energy and economic analyses of thermoacoustic energy systems driven by renewables.
9. Advanced assessments and exploration of funding policies for renewable energy projects.
10. Integration of renewable systems in building infrastructures and dynamic simulation studies for optimizing energy usage and reducing environmental impact.
11. Multi-use applications of renewable energies for electrical, thermal, cooling, water, and transportation purposes.
12. Energy planning and integration of renewable and fossil technologies to achieve optimal network balance.
13. Performance and management analysis of key components in Power-to-X systems.

Prof. Dr. Francesco Calise
Dr. Francesco Liberato Cappiello
Dr. Luca Cimmino
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• distributed generation
• renewable energy
• electrical and thermal storage
• Power-to-X
• dynamic simulation
• optimization
• polygeneration systems