Can a 5kW Hybrid Inverter Solve Factory Power Outages in Vietnam?

1. Market background and customer pain points

Small and medium-sized enterprises in Vietnam are facing the dual pressures of rising electricity prices and unstable power supply.

Since 2023, Vietnam Electricity Group (EVN) has raised electricity prices four times, with a cumulative increase of 17.1%. In May 2025, prices will rise again by 4.8%. Coupled with a surge in electricity demand due to high summer temperatures, businesses are facing significant increases in electricity bills. A machinery manufacturing company in Ha Tinh province reported that its monthly electricity bill increased by approximately 18 million VND.

More troublesome than rising electricity prices is the frequent unexpected power outages.

In Dong Nai province, a major industrial center in southern Vietnam, several companies have reported six unexpected power outages to the local government in the past six months. These outages caused machinery to suddenly stop operating, damaging equipment, threatening worker safety, and resulting in production disruptions and delivery delays. One company manager bluntly stated, “When the power went out, workers stopped working, but their wages were still paid as usual. Afterwards, we had to arrange overtime to make up for the lost production, and the overtime pay was far higher than normal wages. However, we didn't even receive any notification about the cause of the power outage.”

Binh Duong province, one of Vietnam's most concentrated manufacturing provinces, is also facing problems with an aging power grid and frequent voltage fluctuations, severely impacting industries that rely on continuous power supply, such as plastics processing and metal manufacturing. Many local factories are currently actively seeking 5kW hybrid inverters or higher-power solar solutions to ensure the normal operation of their production lines.

2.Client Cases

Mr. Tran Van Minh runs a plastic parts processing plant in Binh Duong province, producing plastic buckles and gaskets for industrial packaging and supplying them to manufacturers in a nearby industrial park.

His main pain points are threefold:

① Power outages can cause production disruptions and equipment damage—if an injection molding machine suddenly loses power while running, all products being molded will be scrapped. Restarting the machine takes at least half an hour. Each power outage results in over 5 million Vietnamese dong (approximately US$200) in wasted materials and idle labor.

② Rising electricity prices are increasing cost pressures—his factory and affiliated convenience store spend an average of about 8 million Vietnamese dong on electricity each month. The continuous rise in electricity prices means a significant increase in costs every year.

③ Diesel generators are a "stopgap measure"—the noise is too loud and will cause complaints from neighbors; the start-up delay will hinder seamless switching; diesel costs more than 3 million Vietnamese dong per month and require frequent maintenance, which is a headache.

Mr. Tran Van Minh didn't need a stopgap measure, but a comprehensive solar energy solution—specifically, a reliable 5kW inverter capable of simultaneously meeting his needs for backup power and electricity cost control. After reviewing various options, he ultimately determined that a 5kW hybrid inverter was best suited to the load characteristics of his factory.

3. Solution: Xindun HFP 5kW Hybrid Inverter

Why choose a 5kW inverter?

Daily load status of the factory:

Daily load: approximately 4–5 kW.

A 5kW hybrid inverter is an ideal choice. Its peak power can reach twice the rated capacity, easily handling the starting surge power of induction motors such as injection molding machines and compressors.

Among all solar solutions on the market, the 5kW inverter offers the best balance of capacity and cost-effectiveness for small and medium-sized commercial users.

HFP 5kW Hybrid Inverter – Core Specifications

Why did the HFP 5kW hybrid inverter solve Mr. Tran Van Minh's pain points?

Pain Point 1: Production losses caused by power outages → Off-grid switching requires 10 milliseconds

In the event of a grid failure, the 5kW hybrid inverter automatically switches to battery power within 10 milliseconds. Compared to the 5-10 second start-up delay of diesel generators, precision equipment such as injection molding machines and refrigeration units are unaffected. Production continues uninterrupted, and product scrap is avoided.

Pain Point 2: Rising Electricity Prices → Hybrid Model to Maximize Solar Power Generation Utilization

This 5kW inverter supports three operating modes: hybrid mode, off-grid mode, and grid-connected mode. In the default hybrid mode, solar power is prioritized during the day, with surplus electricity stored in batteries for use at night or on cloudy days. This maximizes self-consumption and saves up to 30% on electricity bills.

Pain Point 3: Diesel generators are expensive and unreliable → Battery-free operation + intelligent monitoring

The 5kW hybrid inverter supports battery-free operation. If the battery fails, the system can be manually reconfigured to battery-less mode, ensuring continued operation without waiting for battery replacement, ensuring no complete shutdown.

With the WiFi monitoring module, Mr. Tran Van Minh can check the power generation, power consumption, and battery status at any time via a mobile app.

4. System Configuration

The project uses a Xindun HFP 5kW hybrid inverter as its core equipment, complemented by 10 580Wp monocrystalline silicon photovoltaic panels (total installed capacity 5.8kWp) and a 51.2V 100Ah lithium iron phosphate battery. The system is also equipped with a WiFi monitoring module and a mobile app, supporting remote viewing of power generation, power consumption, and battery status, allowing users to monitor system operation at any time.

5. Operational Results

The system officially went into operation in October 2025. Data after three months of operation showed that the average monthly electricity cost dropped from 8 million VND before installation to 5.6 million VND, a reduction of 30%. Previously, monthly power outage losses of approximately 15 million VND and diesel fuel costs of 3 million VND were completely eliminated. Considering all the savings, the investment cost is expected to be recovered in about 2.5 years, while reducing carbon emissions by approximately 4.5 tons annually. The HFP 5kW hybrid inverter effectively helped the customer achieve the triple goals of power security, cost savings, and environmental benefits.

6. Customer and installation personnel feedback

Mr. Tran Van Minh said: "The HFP 5kW hybrid inverter is the wisest equipment investment I have made in the eight years I have been running my business. The power outage problem has been completely solved, and my electricity bill has dropped significantly."

7. Regarding Xindun Power

Founded in 2006, Guangdong Xindun Power Technology Co., Ltd. is a national high-tech enterprise with nearly 20 years of professional experience in the fields of new energy inverters and energy storage. The company is headquartered in Foshan and has a production base of over 15,000 square meters.

Why do Vietnamese installers and end-users choose Xindun

Reliable products: The HFP series has sold over 100,000 units and been exported to more than 40 countries.

Mature technology: Up to 94% efficiency, switching time of only 10 milliseconds, 500V wide MPPT range.

Comprehensive support: 24/7 technical support and rapid response after-sales service.

Fully Certified: CE, RoHS and other international standards

Core product lines:

The HFP series of hybrid inverters (1kW – 12.3kW) includes the 5kW hybrid inverter, which is one of the most popular models.

WF series off-grid inverters (500W – 40kW)

MPPT solar controller, energy storage battery, and complete Solar energy system

8. Become a global partner of Xindun.

Xindun Power cordially invites global distributors, installers, and system integrators to join our partner network and share the benefits together.

•100,000+ HFP units sold, serving 80+ countries
•15,000m² factory, 250,000+ units annual capacity
• CE, RoHS certified, <2% return rate
•20 years of inverter manufacturing experience

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