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Study on Performance of Rooftop Solar Power Generation Combined with Battery Storage at Office Building in Northeast Region, Vietnam

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  • Tung Nguyen Thanh

    (Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology, Vietnam National University, Hanoi 100000, Vietnam)

  • Phap Vu Minh

    (Institute of Energy Science, Vietnam Academy of Science and Technology, Hanoi 100000, Vietnam)

  • Kien Duong Trung

    (Faculty of Industrial and Energy Management, Electric Power University, Hanoi 100000, Vietnam)

  • Tuan Do Anh

    (National Center for Technological Progress, Vietnam Ministry of Science & Technology, Hanoi 100000, Vietnam)

Abstract

At present, renewable energy sources are considered to ensure energy security and combat climate change. Vietnam has a high potential for solar power development, especially in the central region and the southern region. However, the northeast region has the lowest solar radiation value, so it can cause difficulty for rooftop solar power investment. In this paper, the study results analyze the financial efficiency of the grid-tied rooftop solar power system with battery storage and compared it to the grid-tied rooftop solar power system without battery storage. The experimental data of a grid-tied solar power system with battery storage at an office building in the northeast region of Vietnam is collected to evaluate the system’s operation performance in real conditions. The study results present that the financial efficiency of rooftop grid-tied power project with and without storage is viable since the benefit-cost ratio (B–C) is larger than one, and internal rate of return (IRR) and net present value (NPV) are positive. However, the grid-tied rooftop solar power system with storage is not quite feasible in case of changing the electricity selling price and investment cost even though the grid-tied solar power system using the storage device can operate more flexibly. The payback period of the grid-tied solar power system with storage is 6.2 years longer and the total profit is nearly 1.9 times lower than the solar power system without battery storage due to the difference in the price of the inverters and the battery. In contrast, the grid-tied solar power system without battery storage shows better financial efficiency but strongly depends on the operation of the utility grid.

Suggested Citation

  • Tung Nguyen Thanh & Phap Vu Minh & Kien Duong Trung & Tuan Do Anh, 2021. "Study on Performance of Rooftop Solar Power Generation Combined with Battery Storage at Office Building in Northeast Region, Vietnam," Sustainability, MDPI, vol. 13(19), pages 1-15, October.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:19:p:11093-:d:651392
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    References listed on IDEAS

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    Cited by:

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    2. Kowsar, Abu & Hassan, Mahedi & Rana, Md Tasnim & Haque, Nawshad & Faruque, Md Hasan & Ahsan, Saifuddin & Alam, Firoz, 2023. "Optimization and techno-economic assessment of 50 MW floating solar power plant on Hakaluki marsh land in Bangladesh," Renewable Energy, Elsevier, vol. 216(C).
    3. Nhat-Luong Nhieu, 2024. "The T-Spherical Fuzzy Einstein Interaction Operation Matrix Energy Decision-Making Approach: The Context of Vietnam Offshore Wind Energy Storage Technologies Assessment," Mathematics, MDPI, vol. 12(16), pages 1-25, August.
    4. Manh-Hai Pham & Vu Minh Phap & Nguyen Ngoc Trung & Tran Thanh Son & Duong Trung Kien & Vu Thi Anh Tho, 2022. "A Study on the Impact of Various Meteorological Data on the Design Performance of Rooftop Solar Power Projects in Vietnam: A Case Study of Electric Power University," Energies, MDPI, vol. 15(19), pages 1-17, September.

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