Journal of Renewable Energies 26 (2023) 91 – 103 - DOI: https://doi.org/10.54966/jreen.v26i1.1119 91 Journal of Renewable Energies Revue des Energies Renouvelables journal home page : https://revue.cder.dz/index.php/rer Research Paper Prediction of direct normal irradiation using a new empirical sunshine duration-based model Abdelatif Takilalte a, *, Ali Dali a , Mohammed Laissaoui a , Amar Bouhallassa a a Centre de Développement des Energies Renouvelables, CDER, BP 62 Route de l'Observatoire, Bouzaréah, 16340, Algiers, Algeria. A R T I C L E I N F O A B S T R A C T Article history: Received 15 May 2023 Accepted 03 July 2023 In this work, we are interested in presenting a new approach allowing us to express the Direct Normal solar Irradiation (DNI) according to the sunshine duration essentially. This choice is justified by the fact that in addition to the sunshine, duration has a strong correlation with solar irradiation, it is measured in many radiometric stations. Some clear sky models with modifications developed exclusively here are made valid for all types of sky. The proposed model is compared with one of the intelligent models such as the Support Vector Regression (SVR) for daily data from Ghardaïa. Keywords: Direct normal irradiation, empirical model, SVR, sunshine duration, all types of sky. * Corresponding author, E-mail address: a.takilalte@cder.dz Tel.: +213(0)23189051 ISSN: 1112-2242 / EISSN: 2716-8247 This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. Based on a work at http://revue.cder.dz.