How Much Does It Cost To Install A Solar Power System For Factories In 2025?

In 2025, energy costs remain one of the top operating expenses for factories across Vietnam and globally. As electricity rates continue to rise, more businesses are turning to solar power as a strategic investment to lower long-term costs, gain energy independence, and boost environmental credentials. But just how much does it cost to install a solar power system for factories this year?

This article explores the real-world costs, ROI expectations, and the practical steps involved for industrial businesses considering solar energy.

Why Solar Power is an Ideal Fit for Factories

Factories often have large, unshaded rooftops and high electricity consumption during daytime working hours. This makes them ideal candidates for solar energy. Unlike residential systems, factory-scale solar installations typically operate at higher capacities (from 50kWp to several hundred kWp), leading to greater economies of scale.

A factory building with a flat roof fully equipped with solar panels under direct sunlight.

Factory Solar Installation Costs in 2025

The cost of installing a solar power system for factories in 2025 varies based on several key factors:

1. System Capacity (kWp)

The bigger the system, the lower the cost per kilowatt. For example:

50kWp system: ~$1,100–$1,300 per kWp
100kWp system: ~$1,000–$1,150 per kWp
200kWp or more: ~$900–$1,050 per kWp

2. Equipment Quality

Premium brands like SMA, Huawei (inverters), and LONGi or Canadian Solar (panels) cost more but offer better performance and warranties.

3. Rooftop Structure and Installation Complexity

Reinforced metal roofs typically reduce installation cost. Complex roofs or heavy steel frameworks can add 10–20% to total costs.

Estimated average price in 2025:

A 100kWp turnkey system: $100,000–115,000 USD (~2.4 to 2.8 billion VND)

Technicians securely mounting solar panels onto a steel-framed rooftop.

What Is Included in the Cost?

A typical factory solar system package includes:

Solar panels and mounting structures
Inverters and control systems
Electrical cables and safety devices
Monitoring software and app
Installation, testing, and commissioning
Government paperwork and licensing

Person holding a clipboard with a list, inspecting solar installation parts on a factory floor.

Return on Investment (ROI) and Payback Period

Solar power is not just a green initiative—it's a sound financial investment. Here's what most factories can expect:

Annual electricity bill reduction: 40–80%, depending on usage
Payback time: 3–5 years
System lifespan: 20–25 years

After the payback period, electricity from your system is essentially free for the remaining 15+ years.

A person comparing two electricity bills at a desk, with visible cost reduction.

Government Policies and Tax Incentives in Vietnam

In 2025, solar adoption continues to be encouraged by local governments through:

Fast-track approval for rooftop systems
VAT reductions for renewable equipment
Flexible grid connection policies

Although no direct subsidies are offered, these incentives significantly reduce administrative and operational hurdles.

Choosing a Reliable Solar Provider

With numerous providers in the market, it's crucial to choose an experienced partner with proven industrial projects. A good provider offers:

Free site surveys and consultations
Custom design for optimal rooftop use
Long-term maintenance and performance guarantees

You can explore industrial solar solutions for factories on trusted platforms like DaiHanCorp.

Technician using a laser tool to measure sunlight exposure on a roof.

Real-Life Example: 100kwp Installation In Binh Duong

A furniture manufacturer in Binh Duong installed a 100kWp system in early 2024:

Total cost: ~2.6 billion VND
Monthly savings: ~25 million VND
Payback period: 4 years

Since commissioning, the factory has reduced its monthly grid electricity usage by 75% and improved its ESG profile with export clients.

solar project completion sign outside factory gate

Is Solar Power Worth It for Your Factory?

Yes—if your factory operates during daylight hours and has a large enough roof. Factors that improve feasibility:

500–1,000m² of available roof space
Monthly electricity bills over 20 million VND
Long-term facility usage (10+ years)

Still unsure? Learn more from DaiHanCorp’s complete solar solutions tailored for factory owners.

Solar power in 2025 is a mature, financially proven strategy for Vietnamese factories looking to reduce costs and embrace sustainability. With rising energy prices, every year without solar means missed savings.

Ready To Explore Your Factory's Solar Potential?