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Solar Energy: A dual strategy for FDI in Vietnam – Cost optimization and ESG compliance
Publish date 07/10/2025
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Rising electricity prices and stricter ESG–Net Zero requirements are pushing foreign-invested factories (FDI) in Vietnam to seek sustainable energy solutions. Rooftop solar power combined with ESCO financing, SSOC™ smart monitoring, and professional O&M services is becoming a dual strategy: reducing energy costs while meeting global ESG standards.
ESG Pressure & Energy Costs: An Urgent Challenge for FDI Manufacturers
A new wave of investment from Korean, Taiwanese, and Thai corporations is accelerating in Vietnam, taking advantage of supply chain integration and competitive labor. However, the green transition is no longer optional, it is mandatory. Industrial electricity prices are volatile and trending upward, while parent corporations and global customers demand transparent carbon emission reporting aligned with ESG frameworks and Net Zero commitments.
Vietnam has pledged to achieve net-zero emissions by 2050, introduced the Green Growth Strategy 2021–2030, and is promoting the Direct Power Purchase Agreement (DPPA) mechanism, which allows manufacturers to sign long-term renewable power contracts. At the same time, many new industrial parks are being developed as green industrial zones, attracting FDI investors seeking to prove sustainable supply chains.
Against this backdrop, rooftop solar energy integrated with smart monitoring (SSOC™), advanced O&M services, and ESCO financing models is emerging as a strategic solution, cutting costs, protecting cash flow, and ensuring compliance with global ESG standards.
Rooftop solar power, combined with comprehensive operation & maintenance (O&M) services, SSOC™ smart monitoring technology, and the ESCO financing model, is becoming a strategic solution for many businesses
Success Stories: LEGO, VinFast, SEDO VINAKO, Leading Star
With nearly 20 years in renewable energy, SolarBK has become a trusted partner for FDI manufacturers in Vietnam. The following projects demonstrate how businesses can combine financial efficiency with sustainable growth.
The LEGO factory at VSIP III, Binh Duong, a US$1 billion investment, is the company’s first carbon-neutral production site worldwide. In April 2025, SolarBK completed a large-scale rooftop solar system. This is LEGO’s sixth factory globally, its second in Asia, and the first across the entire LEGO network to achieve full carbon neutrality.
VinFast – Hai Phong: Industrial Scale with Reliable Operations
The VinFast electric vehicle manufacturing complex, one of the largest industrial facilities in Southeast Asia, requires a stable clean energy supply for continuous production. SolarBK completed a 30.72 MWp rooftop solar system (one of Vietnam’s largest).
Meanwhile, VinFast Energy is developing international-standard BESS (Battery Energy Storage Systems) to optimize renewable energy usage, reduce peak-hour electricity costs, and stabilize production.
SEDO VINAKO – Quang Nam: Korean Pioneer with the ESCO NEXT Model
In the textile industry, production stability is critical.
SEDO VINAKO, a 100% Korean-owned enterprise, partnered with SolarBK to deploy a 1,624.7 kWp rooftop solar system under the ESCO NEXT financing model in February 2024, helping cut energy costs, lower CO₂ emissions, and meet ESG requirements from the parent company.
Later, in June 2025, SEDO VINAKO implemented Vietnam’s first commercial rooftop solar project with integrated BESS, enabling uninterrupted production during grid outages, reducing peak electricity costs, and stabilizing power quality.
Leading Star – Thanh Hoa: A Green Shift in the Garment Supply Chain
At Bim Son Industrial Park, Thanh Hoa, Leading Star commissioned a 1 MWp rooftop solar system in September 2025, after just three months of construction. The system cuts over 769 tons of CO₂ annually, reduces electricity costs, and showcases a green supply chain commitment to global apparel brands.
These projects show that solar energy is not only a clean power source but also a strategic tool, helping FDI factories stabilize production, optimize costs, and comply with increasingly strict ESG requirements.
In December 2024, SolarBK completed a 30.72 MWp rooftop solar system, currently one of the largest projects in Vietnam.
The Energy Service Company (ESCO) model allows factories to install rooftop solar with no upfront capital expenditure (CAPEX). Instead, energy costs are shifted to OPEX through long-term power purchase agreements at rates lower than the national grid.
SolarBK (via Solar ESCO) handles the entire investment, operation, maintenance, and technical risks. At the end of the contract, the factory owns the system and benefits from nearly free clean electricity, an effective way to reduce capital pressure and hedge against electricity price volatility.
SSOC™ Smart Monitoring:
Developed by SolarBK, SSOC™ offers 24/7 real-time monitoring, fault detection, and transparent data to support ESG reporting aligned with international standards (CDP, GRI, SBTi).
When integrated with Made-in-Vietnam BESS technology, manufacturers can reduce peak-hour costs, maintain production during grid instability, and maximize return on investment, particularly valuable for high-tech and export-oriented textile factories.
Legal Advantage – DPPA Mechanism:
The Direct Power Purchase Agreement (DPPA) is opening opportunities for companies to sign long-term renewable energy contracts at stable prices, supporting RE100 commitments of multinational groups.
SolarBK’s professional O&M services not only ensure performance but also manage risks comprehensively: electrical safety & fire protection, production insurance, and regulatory compliance throughout the 20–25 year project lifecycle.
SEDO VINAKO, a 100% Korean-owned enterprise, partnered with SolarBK to implement Vietnam’s first commercial rooftop solar project integrated with battery energy storage (BESS) in June 2025.
The Path Forward for FDI: Proactive Green Investment – Long-Term Profit Protection
From LEGO to VinFast, SEDO VINAKO, and Leading Star, these success stories prove that FDI manufacturers in Vietnam can combine financial performance with green growth strategies.
Leveraging ESCO to ease capital pressure, SSOC™ for ESG data transparency, and BESS for production stability is becoming a key competitive advantage.
FDI companies interested in green energy solutions can contact SolarBK for tailored consultation, from financial modeling to technical deployment and legal compliance, to optimize costs and meet global ESG requirements.
