Service

avt

Grid-tied solar energy

The grid tied solar system not only helps you significantly reduce electricity costs but also contributes to sustainable environmental protection. At SNTEK, we provide on-grid solar solutions that optimize performance and are tailored to meet the needs of each household and business. Let’s explore the on-grid solar system with SNTEK before making the decision to implement it for your home or business.

I. Introduction To Grid-Tied Solar Systems

1. What Is A Grid-Tied Solar System?

A Grid-Tied Solar System or On-Grid Solar System is a solar power system directly connected to the national grid, harnessing energy from sunlight to generate electricity. This is currently the most popular solution, especially in areas with a stable power grid, as it reduces electricity costs without requiring investment in battery storage like off-grid solar systems.

The on-grid system allows the electricity generated by solar panels to be used directly to power household or business appliances. If the generated power exceeds consumption needs, the surplus electricity is fed back into the national grid through a two-way meter, and you can sell this excess energy to Vietnam Electricity (EVN).

2. Basic Structure of an On-Grid Solar System

A typical on-grid solar system consists of the following key components:

1. Solar Panels:
This is the main component responsible for converting sunlight into direct current (DC) electricity. Solar panels are usually made of semiconductor materials (commonly silicon) and can withstand harsh weather conditions. Based on efficiency, there are two main types:

  • Monocrystalline (Mono): High efficiency, ideal for limited spaces.
  • Polycrystalline (Poly): Lower cost but slightly less efficient compared to Mono.

2. Inverter:

This device converts DC electricity generated by the solar panels into alternating current (AC), which is suitable for household or business use.

3. Grid Connection System:
A two-way meter records both the electricity consumed from the grid and the excess electricity fed back into the grid. This ensures accurate tracking of the energy you use and the surplus you generate.

4. Monitoring System:
Some systems are equipped with smart monitoring software or applications, allowing users to track performance, energy production, and energy consumption in real time.

Biến tần Micro Inverter
Micro Inverter

3. Types of On-Grid Solar Systems

Depending on electricity needs, roof space, and budget, on-grid solar systems are divided into various capacities. Below are the three most common types:

a) 3 kWp On-Grid Solar System

  • Capacity: 3 kWp is the maximum output the system can generate under ideal sunlight conditions.
  • Suitable for: Small households with average electricity consumption of about 300-400 kWh/month.
  • Roof Space Required: Approximately 18-20 m² (equivalent to 6-8 solar panels).
  • Advantages:
    • Reduces electricity bills by 30-50%.
    • Low investment cost, with a payback period of around 4-5 years.

b) 5 kWp On-Grid Solar System

  • Capacity: 5 kWp – the most popular option for households.
  • Suitable for: Families with moderate to high electricity consumption, about 500-700 kWh/month.
  • Roof Space Required: Approximately 30-35 m² (equivalent to 10-12 solar panels).
  • Advantages:
    • Reduces electricity bills by 50-70%.
    • Excess electricity can be sold back to the national grid.

c) 10 kWp On-Grid Solar System

  • Capacity: 10 kWp – ideal for businesses or large households.
  • Suitable for: Large households or small businesses with electricity consumption exceeding 1,000 kWh/month.
  • Roof Space Required: Approximately 60-70 m² (equivalent to 20-24 solar panels).
  • Advantages:
    • Significantly reduces electricity costs for small businesses or high-energy households.
    • Income from surplus electricity fed back into the grid can reach 1-2 million VND/month.

      Hệ Thống Điện Mặt Trời Hòa Lưới
      On-Grid Solar System

II. Operating Principles of an On-Grid Solar System

An on-grid solar system operates on the principle of converting sunlight into electrical energy and integrating it into the national power grid. The system's operation involves 5 basic steps:

1. Solar Energy Absorption

Solar panels absorb sunlight and generate direct current (DC) electricity through the photovoltaic effect.

2. Power Conversion

The inverter converts DC electricity into alternating current (AC), ensuring it meets the voltage and frequency standards of the national grid.

3. Integration Into The Grid

The generated electricity is prioritized for use by household appliances. Any surplus energy is fed back into the national grid via a two-way meter.

4. Grid Power Usage

When solar power is insufficient (e.g., at night or on rainy days), the system automatically draws electricity from the grid to meet energy needs.

5. Monitoring and Optimization

The system integrates monitoring software, enabling real-time tracking of performance and optimizing operations for maximum efficiency.

The easiest way to understand grid-tied solar power operation: See here.

Nguyên lý hoạt động điện mặt trời hòa lưới
Operating principles of an on-grid solar system

III. Operation Process of an On-Grid Solar System

The operation process of the system is designed to optimize energy efficiency and ensure stability:

  • Daytime: Solar power generated is used directly for electrical appliances. Any surplus energy is fed back into the national grid.
  • Nighttime: When sunlight is unavailable, the system automatically switches to drawing power from the grid to supply energy to devices.
  • Adverse Weather Conditions: Solar panels still produce a small amount of electricity, even during cloudy or rainy conditions. The grid compensates for any shortfall in energy.
  • Performance Monitoring: Users can monitor the system's performance and status through a smart monitoring application, helping optimize energy usage and maintain efficiency throughout the system's operation.

IV. Cost of Installing an On-Grid Solar System

The installation cost of an on-grid solar system depends on several factors, such as system capacity, equipment type, and roof conditions. Below is the estimated price range for common systems:

  • 3 kWp System (Small Households):
    Price: Approximately 30 - 50 million VND.
    Ideal for small households, this system can save 30-50% on monthly electricity bills
  • 5 kWp System (Medium-Sized Households):
    Price: Approximately 50 - 80 million VND.
    Suitable for families with medium to high electricity consumption, reducing electricity costs by 50-70% and allowing the sale of surplus energy to the national grid.
  • 10 kWp System (Small Businesses):
    Price: Approximately 100 - 150 million VND.
    Ideal for large households or small businesses with high energy consumption. This system significantly reduces electricity costs and generates additional income from surplus energy fed into the grid.

    Hệ Thống Điện Mặt Trời Hòa Lưới
    On-Grid Solar System

Factors Affecting Installation Costs

  • Quality of Solar Panels and Inverter: High-quality, high-efficiency equipment comes at a higher price but offers long-term benefits, including better energy savings and reduced maintenance costs.
  • System Capacity: Larger systems require higher initial investment but provide greater savings over time due to their ability to generate surplus electricity.
  • Installation Conditions: Costs may vary depending on the complexity of installation and roof conditions. Roofs that face north, are free from shading, and are structurally sound will optimize performance and reduce installation expenses.

V. How to Use a Grid-Tied Solar Power System

The grid-tied solar power system is designed for simplicity, ensuring easy operation and maintenance. Below are the fundamental steps to operate the system effectively:

5.1 System Startup

The system automatically activates when sunlight is available, without requiring user intervention. Once installed, the system begins capturing energy from solar panels, converting it, and supplying it to household or business appliances.

5.2 Performance Monitoring

SNTek provides a smart monitoring application that allows users to track solar energy production, electricity consumption, and surplus energy sold back to the grid.

  • Monitoring App: Provides detailed information on daily, monthly energy production and estimated cost savings.
  • Alert Mode: The app sends notifications in case of faults or inefficiencies, enabling timely troubleshooting and system optimization.

5.3 Regular Maintenance

To ensure the solar power system operates stably and efficiently, periodic maintenance is essential:

  • Cleaning Solar Panel Surfaces: Dust or obstructions on solar panels can reduce light absorption efficiency. Regular cleaning of the panels helps optimize the system’s performance.
  • Routine Inspection of Inverters and Components: The inverter and other system components should be inspected regularly to ensure proper operation and maintain long-term efficiency.

5.4 Troubleshooting

If the system encounters issues or does not perform as expected, customers can contact SNTek’s technical support team for timely assistance. With 24/7 Support Policy, SNTek’s team is available around the clock to promptly identify and resolve issues, ensuring the system resumes operation efficiently.

VI. On-Grid Solar System Installation Services by SNTek

SNTek is a leading provider of solar grid-tied solutions in Vietnam. We are committed to offering high-quality services, from consulting and designing to installing and maintaining the solar system, ensuring that customers can invest and use solar energy systems with peace of mind.

6.1 Free Consultation

Our technical team will assess the actual condition of your roof, evaluate the electricity consumption of your household or business, and propose a suitable system solution that fits your needs and budget.

6.2 System Design

  • Optimize Roof Area: We will calculate and design the most efficient solar power system based on the available roof space, ensuring maximum performance.
  • Selecting Quality Equipment: Solar panels, inverters, and other components will be chosen from reputable brands such as LG, Canadian Solar, and SMA.

6.3 Professional Installation

  • Experienced Technical Team: With years of experience in solar system installation, SNTek’s technical team will install the system quickly and safely.
  • Installation Completed in 1-3 Days: The installation process will be completed within 1-3 working days, depending on the system’s size and installation site conditions. (Installation time may vary based on location and terrain complexity).

6.4 Maintenance and After-Sales Support

  • Long-Term Warranty of up to 10 Years: SNTek offers long-term warranties for solar panels, inverters, and system components, ensuring the quality of the products.
  • Regular Maintenance Services: To maintain optimal system performance, we provide regular maintenance services for your system.
    Dịch Vụ Lắp Đặt Điện Mặt Trời Hòa Lưới Của SNTek

      Solar Grid-Tied System Installation Services by SNTek

VII. Reasons To Choose SNTek

7.1 Industry-Leading Experience

SNTek has over 10 years of experience in the renewable energy industry, particularly in the solar power sector. We have successfully completed numerous projects, ranging from residential homes to large businesses.

7.2 High-Quality Equipment

SNTek partners with leading global brands to supply solar panels, inverters, and other components that meet international standards. This ensures optimal system performance and long-term durability.

7.3 Comprehensive Services

From consultation, design, installation to maintenance, we provide a full range of services, making it easier for customers to access solar energy solutions with a seamless experience.

7.4 Competitive Pricing

We are committed to offering reasonable and transparent pricing, helping customers save on their initial investment while receiving maximum value from their solar energy systems.

7.5 Environmental Protection

SNTek is dedicated to reducing CO₂ emissions and protecting the environment, aiming for a green and sustainable future for generations to come.

The grid-tied solar system is the optimal solution for saving energy costs, reducing CO₂ emissions, and protecting the environment. With SNTek's support, you not only receive a high-quality solar system but also benefit from professional consulting, installation, and maintenance services.

Pricing

Pricing Plans

Basic Plan
$100
/mo
Installation
Repair & Replacement
Monitoring Work
Panel Maintence
24/7 Skilled Support
Minimal Plan
$150
/mo
Installation
Repair & Replacement
Monitoring Work
Panel Maintence
24/7 Skilled Support
Best choice
Optimal Plan
$200
/mo
Installation
Repair & Replacement
Monitoring Work
Panel Maintence
24/7 Skilled Support
Premium Plan
$250
/mo
Installation
Repair & Replacement
Monitoring Work
Panel Maintence
24/7 Skilled Support

In this era of continuous scientific and technological development, only new technology can help us achieve optimization in both production and life.

Contact us now!

We are always ready to support customers as soon as possible and fastest.

What people says
about SNTek

Solutions

Solutions