Title	Effects of Wind and PV Energy on Optimal Determination of Energy Storage and Spinning Reserve Capacity
Author	Seyyed Mahdi Esmaeili, Hossein Haroonabadi
Citation	Vol. 17  No. 4  pp. 21-29
Keywords	Differential evolution algorithm, Energy storage system, Photovoltaic energy, Spinning reserve, Wind energy.

Title	Current Situation of Renewable Energy Resources Marketing and its Challenges in Light of Saudi Vision 2030 Case Study: Northern Border Region
Author	Odai Falah Mohammad AL-Ghaswyneh
Citation	Vol. 22  No. 3  pp. 89-94
Keywords	Marketing, Energy, Vision 2030, Solar Energy, Wind Energy, Thermal Energy, Landfill