Journal profile · ENERGY & FUELS
International Journal of Sustainable Energy
ISSN 1478-6451 · eISSN 1478-646X · Taylor & Francis · United Kingdom
International Journal of Sustainable Energy: CAS Zone 4 · Engineering (2025 upgraded edition); impact factor 4.2 (journal website); fully open access; APC about USD 2,195; median 80 days to acceptance (95 articles, last 24 months); acceptance rate 25% (journal website); 58 articles in 2025; indexed in ESCI and Scopus.
Scope
Aims, scope and focus
International Journal of Sustainable Energy is published by Taylor & Francis and is in Zone 4 of Engineering in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Solar Thermal and Photovoltaic Systems, Building Energy and Comfort Optimization and Photovoltaic System Optimization Techniques, together about 33% of its articles. Its main subfields are Renewable Energy, Sustainability and the Environment and Electrical and Electronic Engineering. (generated from OpenAlex topic counts and CAS ranking data)
*Please note that the International Journal of Sustainable Energy converted to a full Open Access journal from Volume 42 (2023). Previous volumes will continue to provide access through a Pay to Read model. The International Journal of Sustainable Energy publishes the latest research on the science and engineering of sustainable energy systems. We publish research papers on: Renewable Energy Sources Sustainable energy efficiency and sustainable energy conservation Economics of sustainable energy systems Security of sustainable energy supply Novel sustainable energy technologies Educational and technological research papers on sustainable Energy Within these sustainable energy topics, we are keen to promote research that explores: Solar thermal energy systems Photovoltaics Concentrated Solar Technology Wind energy systems Biomass and bioenergy Geothermal energy systems Marine and hydropower energy systems Combined and hybrid sustainable energy systems Smart grids Integration of energy systems Carbon capture and storage Energy design and the performance of buildings Sustainability in the urban environment Feasibility and viability of energy investments Energy and environmental policies Energy-focused education, training and certification schemes Social dimensions of energy and sustainability Please note that studies which lack clear theoretical justification and substantial data relevance are not appropriate for International Journal of Sustainable Energy and will not be considered for publication. All published research articles in the International Journal of Sustainable Energy will have undergone rigorous peer review, based on initial screening and single anonymized refereeing, by at least two independent expert referees. You can submit a paper using our ScholarOne submission site, or for more information visit our Instructions for Authors page. Author benefits We are abstracted and indexed in Scopus, EBSCO, and more. The prestigious and experienced members of our international Editorial Board will guide you from submission to publication. Our Author Services page provides you with tips and tricks to promote your research on social media and through your network. This includes 50 free e-prints to share with anyone you wish. Quickly and easily track the impact your paper makes with the help of Authored Works.
From the journal's Aims & Scope
Research area (LetPub): ENERGY & FUELS
Editor-in-chief Paris FokaidesPublisher website
Main research topics OpenAlex counts of recent articles; shares are approximate
- Solar Thermal and Photovoltaic SystemsEnergy13.7%
- Building Energy and Comfort OptimizationEngineering9.9%
- Photovoltaic System Optimization TechniquesEnergy9.4%
- Solar Radiation and PhotovoltaicsComputer Science9.3%
- Energy and Environment ImpactsEnvironmental Science6.8%
- Hybrid Renewable Energy SystemsEnergy5.1%
- Integrated Energy Systems OptimizationEngineering3.4%
- Smart Grid Energy ManagementEngineering3.3%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Engineering Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 4 |
| Minor | Energy & Fuels | Zone 4 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Engineering Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Engineering | Zone 4 |
| Minor | Green & Sustainable Science & Technology | Zone 4 |
| Minor | Energy & Fuels | Zone 4 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Not covered
Not covered by this edition.
JCR / CiteScore quartiles on the journal's website
- CiteScore Q1 · 2025
Publisher-reported: JCR figures are Clarivate's and CiteScore figures Scopus's to confirm; both are a different system from the CAS zones.Publisher website
Database indexing
ESCIScopusDOAJLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
EI CompendexINSPECPublisher website
Other: EBSCO, Astrophysics Data System, OCLC, British Library Inside, CABI, Cambridge Scientific Abstracts, EBSCO Databases, Electronic Collections Online, Elsevier Bibliographic Databases, Geobase, New Jour, OCLC ArticleFirst, Zetoc
As the journal's website lists them, not checked against each database; for Web of Science editions the records above apply.
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor (publisher) 2025
- 4.2Publisher website ·
- 5-year impact factor (publisher) 2025
- 3Publisher website ·
- CiteScore 2026-06
- 6.2LetPub ·
- CiteScore (publisher) 2025
- 6.2Publisher website ·
- SJR 2026-06
- 0.66LetPub ·
- SJR (publisher) 2025
- 0.66Publisher website ·
- SNIP 2026-06
- 0.79LetPub ·
- SNIP (publisher) 2025
- 0.79Publisher website ·
- h-index
- 59OpenAlex ·
- i10-index
- 654OpenAlex ·
- 2-year mean citedness
- 5.87OpenAlex ·
- Self-citation rate
- 2.4%LetPub ·
- Share of gold OA articles
- 100%LetPub ·
Volume
- Articles per year
- 59LetPub ·
- Downloads per year (publisher)
- 236,000Publisher website ·
Articles by year OpenAlex count · 1,597 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 42 | 42 | 36 |
| 2025 | 58 | 58 | 252 |
| 2024 | 66 | 66 | 687 |
| 2023 | 74 | 74 | 1,192 |
| 2022 | 54 | 7 | 517 |
| 2021 | 63 | 6 | 845 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
Review time from article dates manuscript dates registered with Crossref · to
80 daysMedian, submission to acceptance · P25–P75 58 days – 125 days
- Acceptance to online
- median 16 days (95 articles)
- Submission to online
- median 111 days
- Sample
- 95 articles with submission and acceptance dates (114 in the window); the latest was accepted on
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- about 14 weeksLetPub ·
- Acceptance rate (publisher)
- 25%Publisher website ·
- Submission to first decision
- 1 daysPublisher website ·
- First decision after review
- 26 daysPublisher website ·
- Acceptance to publication
- 11 daysPublisher website ·
- Submission to publication (journal-reported)
- about 14 weeksDOAJ ·
- Peer review
- Single anonymous peer reviewDOAJ
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Fully open accessDOAJ
Every article is open access; authors usually pay an article processing charge (APC).
| Source | APC | Fee waiver | License | Observed |
|---|---|---|---|---|
| DOAJ | USD 2,195 / GBP 1,756 / EUR 2,110 / AUD 3,060 | Yes | CC BY, CC BY-NC | |
| Publisher website | Yes, amount not published | — | — |
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Submission
Article types and submission policies (journal website)
Article types accepted2
- research articleResearch ArticleLength not stated
- review articleReview ArticleLength not stated
Policy excerpts from the journal's websiteOpen access, Peer review
- Open access Open access
International Journal of Sustainable Energy is an open access journal and only publishes open access articles. Publishing open access means that your article will be free to access online immediately on publication, increasing the visibility, readership, and impact of your research. Why choose open access? Increase the discoverability and readership of your article Make an impact and reach new rea…
Source ↗Publisher website ·- Peer review
Peer review policy Model summary
All published research articles in the International Journal of Sustainable Energy will have undergone rigorous peer review, based on initial screening and single anonymized refereeing, by at least two independent expert referees.
Source ↗Publisher website ·
Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.
Profile
Publication details and official links
- Publisher
- Taylor & Francis
- Country or region
- United Kingdom
- Language
- English
- ISSN
- 1478-6451
- Electronic ISSN
- 1478-646X
- Latest issue on the website
- Volume 45, Issue 1 (2026)
- Official links
- Journal homepage ↗DOAJ
- Submission system ↗Publisher website
- Author guidelines ↗DOAJ
- Aims & Scope ↗DOAJ
- Special issues ↗Publisher website
- APC information ↗DOAJ
- Fee waivers ↗DOAJ
- Open access statement ↗DOAJ
- License & copyright ↗DOAJ
- Peer review process ↗DOAJ
- Editorial board ↗DOAJ
- Plagiarism policy ↗DOAJ
FAQ
Frequently asked questions about International Journal of Sustainable Energy
What CAS zone is International Journal of Sustainable Energy in?
In the 2025 upgraded edition of the CAS Journal Ranking, International Journal of Sustainable Energy is in Zone 4 of Engineering, and in Zone 4 of the minor category Energy & Fuels. In the 2026 Xinrui edition it is in Zone 4 of Engineering. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of International Journal of Sustainable Energy?
The journal's website gives an impact factor of 4.2 (2025); this is the journal's own figure, as LetPub lists none for it; CiteScore 6.2, h-index 59.
How long does peer review take at International Journal of Sustainable Energy?
Based on the dates recorded on 95 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 80 days (interquartile range 58–125 days); authors report an average review time of about 14 weeks; the journal's website gives an acceptance rate of 25%. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
Which databases index International Journal of Sustainable Energy?
According to LetPub and DOAJ records, International Journal of Sustainable Energy is indexed in ESCI, Scopus and DOAJ. The journal's website also lists EI Compendex and INSPEC; that list has not been checked against each database.
Is International Journal of Sustainable Energy open access, and what is the APC?
International Journal of Sustainable Energy is a fully open-access journal. APC about USD 2,195.
Sources and updates
The facts on this page come from LetPub, Publisher website, DOAJ, OpenAlex; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-25). Last updated: .