How To Select Rooftop Energy Storage From Chinese Manufacturers?

 

 

Record-Breaking Heatwave Exacerbates Electricity Demand in Northern Vietnam

 

In late May 2026, northern and north-central Vietnam faced its worst heatwave in over a decade, with temperatures soaring above 40°C in many areas. This extreme weather dramatically increased electricity demand, pushing the national peak load to 58,103 MW and peak electricity consumption to 1.217 billion kWh. The northern region's peak load approached 30,000 MW, marking a 27% year-on-year increase. By the end of May, the 2026 electricity consumption record had already been shattered, signaling an even more severe dry season ahead.

 

 

Early Adopters Embrace Rooftop Solar with Energy Storage for Self-Sufficiency

 

Nguyen Van Thach, a resident of Ha Tinh province, emerged as one of the early adopters of a rooftop solar power system paired with advanced energy storage. Facing monthly summer consumption of approximately 1,200 kWh and bills exceeding 4 million VND, he invested around 15 million VND in the installation. Post-installation, his household achieved near self-sufficiency during daylight hours, while the storage component ensured stable nighttime supply, substantially lowering costs. Such integrations highlight how battery energy storage systems are transforming residential energy management amid volatile grid conditions.

 

Key Asia Pacific BESS Market Projections

 

Year	Market Size (USD Billion)	CAGR (Relevant Period)	Key Drivers
2025	28.61	-	Renewables growth, policy support
2026	~35-40 (estimated)	16.9% (to 2030)	Grid stability, solar integration
2030	62.45	16.9%	Electrification, manufacturing

 

 

 

 

Battery Energy Storage System Definition and Role in Modern Energy Solutions

 

A battery energy storage system (BESS) is a technology that stores electrical energy in rechargeable batteries for later use, enabling better management of supply and demand fluctuations, particularly when paired with intermittent renewables like solar PV. In Vietnam's context, these systems provide backup power, enhance reliability, and support grid stability. Companies like BLOO POWER are at the forefront, offering tailored BESS solutions that integrate seamlessly with rooftop installations for both residential and commercial users.

 

 

Industrial Projects Demonstrate Savings Through Solar PV and Storage

 

In Thai Nguyen province, DISOCO launched its first-phase rooftop solar photovoltaic (PV) project in March 2026, covering 24,972 square meters of factory rooftops with a designed peak capacity of 1.9 MW. The system delivers 6% to 8% savings in electricity consumption, equating to monthly cost reductions of approximately 1 billion VND. Deputy General Manager Vu Xuan Tuan emphasized that global customers increasingly demand renewable energy in production processes and emission reduction roadmaps. Rooftop PV addresses both economic needs and market responsibilities, with storage further amplifying benefits.

 

 

Peak Shaving Benefits and BLOO POWER's Innovative Applications

 

Experts note that battery energy storage system for peak shaving-a strategy where stored energy is discharged during high-demand periods to reduce grid strain and avoid costly peak tariffs-offers significant advantages. BLOO POWER's solutions exemplify this by charging during off-peak or excess solar periods and discharging strategically. This not only cuts bills but also mitigates grid congestion. In industrial settings, such systems can reduce maximum demand charges substantially while supporting renewable integration.

 

 

Environmental and Operational Advantages of Rooftop PV with Storage

 

Installing rooftop PV can lower roof surface temperatures by 2–3°C, decreasing air conditioning loads and aiding businesses in joining the global green supply chain. Long-term, combining this with energy storage technology boosts backup capacity and energy security. Recent news from Vietnam's Ministry of Industry and Trade underscores prioritization of battery storage alongside rooftop solar incentives, including mandates for utility-scale projects.

 

 

Rapid Growth in Rooftop Solar Adoption Across Northern Vietnam

 

According to data from Vietnam Northern Electricity Company (EVNNPC), as of Q1 2026, 4,622 customers across 17 northern provinces installed rooftop PV systems totaling over 611 MW, including 2,201 new customers adding 141.5 MW. Board member Du Van Nam highlighted the vast potential: approximately 9 million households and 2 million businesses with extensive rooftop space. Targeted load reductions during peaks could yield substantial grid relief.

 

Vietnam Rooftop Solar + Storage Impact Estimates

 

Scenario	Potential Load Reduction (MW)	Annual Savings Example
50% Households (20W peak reduction)	~90	Significant bill reductions
Businesses (300W adjustment)	~800	Up to 1B VND/month per large site
50% Adoption by 2030	Multi-GW green power	Enhanced energy security

 

 

Policy Reforms and Long-Term Projections for Rooftop PV Deployment

 

The Vietnamese Ministry of Industry and Trade is revising Decree No. 58/2025/NĐ-CP and issuing guidelines for direct power purchase agreements to remove barriers and accelerate rooftop photovoltaic development. If the Eighth Electricity Plan's goals are met-with 50% of households and office buildings adopting self-generated rooftop PV by 2030-significant green power will be available during northern summer peaks.

 

 

Asia Pacific Battery Energy Storage System Market Dynamics and Vietnam's Position

 

The Asia Pacific battery energy storage system market is experiencing explosive growth, projected to expand from USD 28.61 billion in 2025 to USD 62.45 billion by 2030 at a CAGR of 16.9%. Driven by renewable integration, grid modernization, and policies in China, India, Japan, Australia, and emerging markets like Vietnam, the region leads global deployments. Vietnam's focus on solar-plus-storage aligns perfectly with these trends, positioning it to capture a growing share amid heatwave-driven demand.

 

 

Global and Regional Data Insights on BESS Deployments

 

Worldwide, battery storage additions reached record levels, with 108 GW deployed in 2025 alone. Asia Pacific dominates, holding about 44.5% of the global market share in recent years.

 

Global Battery Storage Growth Milestones

 

Metric	2025 Figure	2026 Projection	Source Notes
Annual Additions (GW)	108	~158	IEA/GlobalData
Asia Pacific Share	~44.5%	Dominant	Grand View Research
Vietnam Policy Focus	Storage mandates	Accelerated rollout	MoIT updates

 

 

Conclusion: Towards a Resilient Energy Future

 

Integrating battery energy system storage with rooftop solar, exemplified by solutions from providers like BLOO POWER, is critical for addressing Vietnam's energy challenges. As the Asia Pacific battery energy storage system market surges, Vietnam stands poised to leverage these technologies for peak shaving, cost savings, and sustainability. Continued policy support and investments will be key to realizing the full potential.