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Renewable energy is an abundant and environmentally friendly local resource. The use, future, and development of wind energy, which is one of today's renewable energy resources, is of great importance. In this study, electrical energy production from wind energy has been examined in Turkey. The electrical energy production (GWh) data set belonging to the years 2010-2019 was used. Trend analysis of electrical energy generation (using three different models) has been evaluated using these data. These models are the linear, s-curve, and quadratic trend models. Then, the model with the minor result in MAPE, MAD, and MSD values was chosen. Finally, it was resolute that the most suitable model for electrical energy production is the quadratic trend model.

The construction industry uses large amounts of energy in building, heating, and cooling to achieve optimum thermal performance and acceptable comfort. Renewable energy is considered clean energy, and these resources should be used in the most appropriate way to minimize environmental impacts. Trombe wall is used to save energy in buildings. The Trombe wall's significant problem is that indoor temperature can reach above the 40 oC and this reasons to rise in cooling load. In this paper, a model has been developed for overcoming temperature growth in outdoor air in the summertime. In this model, a heat pipe is placed to the airflow channel for removing heat to be decreased indoor air. Also, an integrated wind turbine is installed in the building for electricity generation, and the results are evaluated.

Primary energy sources, fossil fuels mostly, have been depleting and not only in industrial and commercial sectors, but also in residential applications affect negatively the environment. One of the important solutions to these problems depends on renewable energy usage widely. One has focused on renewable energy-based multigeneration systems in the last decade. In this paper, a solar driven multigeneration system is introduced and the simulation of this system is performed by using TRNSYS 18. The proposed system includes PV-T and PV panels, a solid oxide fuel cell (SOFC), an electrolyzer, a hydrogen compressor, a hydrogen storage tank, a generator, a gas turbine cycle, batteries, an air-cooled chiller, an absorption chiller, hydrogen combustors, a water storage tank, a heat exchanger and control systems. In this system, the producing heat, cooling, electricity and hydrogen are designed. This system is considered to be located in Izmir, which is the third biggest in Turkey by population and the performance of the system is analyzed over a period of one year.