A research team led by scientists from Turkey's Final International University has developed a self-powering greenhouse that utilizes a semi-transparent PV (STPV) system, a battery energy storage system (BESS) for short-term energy storage, and hydrogen for long-term storage.
The size of the proposed system was optimized to maximize net present value (NPV) and minimize energy dependency (ED) on the grid.
"Previous studies highlight the potential of STPV systems, which serve a dual function by allowing sunlight to pass through for photosynthesis while simultaneously generating electricity. Despite this advantage, there is a recognized lack of energy availability during winter months in greenhouses," the team explained. "By incorporating both BESS and hydrogen as part of a hybrid energy storage solution, this research provides a comprehensive approach to addressing seasonal energy dependency and optimizing energy management throughout the year."
The system was designed to use STPV with an efficiency of 7%, with a cost per 32 W panel of $100. The BESS is based on lead acid, with charging and discharging efficiency of 80% to 90% and a price of $500/Kw. The electrolyzer has an efficiency of 80% and a cost of €388 ($408)/kW; the hydrogen storage system has an efficiency of 90% and a price of $10/kW; and the fuel cell has an efficiency of 60% and a price of €395/kW.
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