Planning Greenhouse Energy Supply with a Focus on Renewable Energy in Microgrid Mode

Climate change and the increase in population of countries have foregrounded the importance greenhouses for future food security. One of the most important considerations in greenhouse production is the need for energy to create suitable greenhouse conditions. Therefore, this paper will investigate the problem of greenhouse energy planning with a focus on renewable energies. To this end, at first, the optimal numbers of renewable energy units and storage units are modeled in order to reduce costs in the micro-grid mode. Afterwards, it analyzes the proposed mixed integer nonlinear problem (MINLP) by using the average wind speed data and the monthly amount of sunlight in the Makran region and by considering different combinations of parameters Cost-wise in 16 different problems. One of the most important results drawn is the determination of the cost-effectiveness of solar energy utilization, which is economically justified, if the investment cost is twice as high as the CHP investment cost. The results also show that the impact of different renewable energy sources in the geographical area-- studied along with the costs of their investment and maintenance costs-- can lead to the unjustifiable technical-economic use of different renewable resources.