Installing Home Solar Power to Instantly Cut 80% Off Your Electricity Bill: Truth or Hype?

As electricity prices continue to rise, the term "Home Solar Power" has become a solution that many households are interested in. Some places advertise that it can reduce monthly electricity bills by up to 80%—which sounds incredibly appealing, but is it really true? This article will help you understand the core concept, analyze the costs and benefits, and reveal the reality of installing a home solar power system.

The electricity bill shows a significant reduction in consumption.

What Is Home Solar Power and How Does It Work?

Home solar power refers to a system that uses solar panels installed on rooftops to absorb sunlight and convert it into electricity for daily use. The system can either operate independently or be connected to the national grid.

Depending on the installed capacity and the household’s electricity usage, the system can help save from 50% to 80% of the electricity bill.

Diagram of How a Home Solar Power System Works

Why Many Households Save Up to 80% on Their Electricity Bills

A System Tailored to Your Needs

If a household consumes around 800–1,000 kWh per month, a properly designed solar system of 5–7kWp can generate an equivalent amount of electricity, potentially reducing the bill by nearly 80%. However, the actual savings depend on:

Installation location (whether the roof receives ample sunlight)

Quality of solar panels and inverters

Actual electricity consumption

The engineer measures solar radiation on the rooftop to recommend a suitable system

Bidirectional Grid Connection – Selling Excess Electricity

Some households use a bidirectional grid-tied system, which allows them to sell surplus electricity back to EVN (Vietnam Electricity), further increasing savings or even generating monthly income. However, not all areas support this buy-back policy.

The bidirectional electric meter displays the amount of electricity sent back to the grid

The Truth Behind the "80%" Figure – It Doesn’t Apply to Everyone

While some cases do achieve 80% savings, this number is not guaranteed for every household. Several factors like roof orientation, rainy seasons, and energy usage habits significantly affect system efficiency.

To maximize effectiveness, you need to:

Get proper consultation and site inspection before installation

Choose a reputable supplier

Regularly monitor the system to ensure stable performance

The technician is checking the performance of the solar power system via a mobile app

Should You Install a Home Solar Power System?

If you live in an area with abundant sunlight year-round and your monthly electricity bill exceeds 1 million VND, then investing in a home solar power system is well worth it. Although the initial cost can range from 50 to 100 million VND, the payback period is usually around 4–6 years, and the system can last over 20 years.

Additionally, using clean energy helps protect the environment and increases the value of your home.

A happy family standing together next to a rooftop with a solar power system

Do Your Research Before Installing

Home solar power is truly a smart savings solution, but don’t blindly believe in the “80% reduction” figure without a thorough site survey. Choose an experienced provider that offers clear warranties and maintenance services.

Still unsure which system is right for your home?

Contact Daihan Technology Company today for a free consultation and on-site inspection.
Invest today, save for the long term!