Title: Battery Storage for Industrial Solar in Vietnam: ESG Impact, Regulatory Barriers, and Investment Model
Authors: Nguyen Lam Phat Nguyen Manh Ha
Volume: 9
Issue: 9
Pages: 141-147
Publication Date: 2025/09/28
Abstract:
This study discusses the economic and investment viability of integrating battery energy storage systems (BESS) with rooftop solar photovoltaics (PV) in Vietnamese industrial zones, in the context that the development of renewable energy is progressing faster than supportive policies and regulatory frameworks for energy storage. There was a mixed-method research design with both expert interviews and in-depth techno-economic simulations for the Northern, Central, and Southern provinces, with particular case study on the Southern region's viability of the use of green finance such as International Renewable Energy Certificates (I-RECs), ESG loans, and other such mechanisms. The simulation results indicate that BESS adoption can increase solar self-consumption from approximately 60% to over 85%, reduce electricity costs by 5-15%, and generate internal rates of return above 11% under high-irradiance conditions. Under low irradiation conditions, BESS enhances operational resilience and energy surety. This is the first Vietnamese research that tries to provide a realistic assessment of BESS installation in the industrial sector combine technical performance indicators, ESG investment trends, inter-regional strategy, and policy geography. The findings offer strategic advice to energy planners, policymakers, and investors who aim to decarbonize industrialized economies. The research offers a model reference for financing Vietnam's transition towards low-carbon industrialization through the transfer of solar PV installations into storage and green finance mechanisms.