What the study found
An off-grid hybrid renewable microgrid combining photovoltaic power, wind power, battery energy storage, and hydrogen energy storage was sized to achieve near-zero loss of power supply for electric vehicle charging. The study found different optimal designs for Egypt and Türkiye, with Türkiye achieving a lower levelized cost of energy.
Why the authors say this matters
The authors state that the approach supports clean, reliable power for electric vehicle charging stations. They conclude that coordinated battery and hydrogen storage can support reliable and cost-effective EV charging across different climatic and economic contexts.
What the researchers tested
The researchers used a multi-objective framework with an Indicator-Based Evolutionary Algorithm to optimize the microgrid. They minimized levelized cost of energy, curtailment ratio, and loss of power supply probability while maximizing renewable fraction, and tested the method in Attaka, Egypt and Yalova, Türkiye.
What worked and what didn't
All designs met the strict zero-LPSP constraint, reported as 0.001% or less. Türkiye had a lower levelized cost of energy ($0.0173/kWh) than Egypt ($0.0261/kWh), along with lower curtailment ratio and slightly higher renewable fraction, while Egypt required much larger battery capacity to handle solar variability.
What to keep in mind
The abstract notes that results vary by location because of climate and finance. It also reports sensitivity to discount and inflation rates, wind speed, and load demand, and states that Egypt showed greater financial fragility based on the reported break-even thresholds.
Key points
- The study optimized an off-grid PV-wind-hydrogen-battery microgrid for EV charging.
- All tested designs met the near-zero loss of power supply target.
- Türkiye had the lower reported levelized cost of energy at $0.0173/kWh, compared with Egypt's $0.0261/kWh.
- Egypt required much larger battery storage capacity to handle solar variability.
- The abstract reports that discount and inflation rates had the largest effect on cost, while wind speed and load demand affected operation.
Disclosure
- Research title:
- Hybrid renewable microgrids differed by country for EV charging
- Authors:
- Ahmad F. Tazay, Shimaa Barakat, Aykut Fatih Guven, Heba I. Elkhouly, Mohamed Mahmoud Samy
- Institutions:
- Al Baha University, Beni-Suef University, Yalova University
- Publication date:
- 2026-03-08
- OpenAlex record:
- View
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