Energies 2019, 12, 197; doi:10.3390/en12010197 www.mdpi.com/journal/energies Editorial Acknowledgement to Reviewers of Energies in 2018 Energies Editorial Office MDPI, St. Alban-Anlage 66, 4052 Basel, Switzerland Published: 8 January 2019 Rigorous peer-review is the corner-stone of high-quality academic publishing. The editorial team greatly appreciates the reviewers who contributed their knowledge and expertise to the journal’s editorial process over the past 12 months. In 2018, a total of 3588 papers were published in the journal, with a median time to first decision of 14.39 days and a median time to publication of 35 days. The editors would like to express their sincere gratitude to the following reviewers for their cooperation and dedication in 2018: A. M. Araújo, Rui Abbas Jibrin, Abubakar Abbas, Azhar Abbaszadeh, Shiva Abdallah, Shaaban Abdel-Motaleb, Ibrahim M. Abdel-Salam, Mazen Abdo, Hafez Abdollahi, Amir Abdollahzadeh Jamalabadi, Mohammad Yaghoub Abedi, Sara Abesser, Corinna Ábrego, Javier Abreu, Antonio Abualfaraj, Noura Abu-Siada, Ahmed Abuzneid, Abdel-Shakour Accardo, Grazia Aceves, Salvador Achinivu, Ezinne Adamo, Alessandro D' Adamovský, Radomír Adebisi, Bamidele Adekunle, Timothy O. Adiletta, Giuseppina Aditjandra, Paulus Teguh Adriaens, Peter Afgan, Imran Afionis, Stavros Afonso, Armando Silva Afonso, Clito Afonso, Frederico Afzal, Muhammad Agafonov, Vadim Agnew, Brian Agonafir, Mesfin Belayneh Ahmad, Muhammad Waseem Ahmadalipour, Ali Ahmadi, Mohammad Hosein Ahmadieh Khanesar, Mojtaba Ahn, Byung Tae Ahn, Dukju Ahn, Hyung Keun Ahvazi, Behzad Akander, Jan Akanji, Lateef Akih-Kumgeh, Ben Akitsu, Tetsuya Akkutlu, I. Yucel Aksanli, Baris Al Ameri, Ahmed Al Dushaishi, Mohammed Ala, Guido Al-Abadi, Ali Alam, S M Shafiul Alamaniotis, Miltiadis Alander, Jarmo Al-Anssari, Sarmad Alarco, Jose Albano, Maurizio Albarracín, Ricardo Alberello, Alberto Albergante, Luca Alberto, Perea Moreno Albizu, Igor Albu, Mihaela Alcarria, Ramon Alcayde García, Alfredo Alcázar-Ortega, Manuel Alconero, Patricia Luis Aldazabal, Javier Aldieri, Luigi Ale-Emran, Sayyed Mahdi Aleluia Da Silva Reis, Lara Aleshin, Sergey Alessandra, Romolo Alessandro, Di Giorgio Alessandro, Sbrana Alexandridis, Antonio