PROJECT

Installation Project Solar Cell for Residential Home
4 kW in Sai Mai District, Bangkok

Update on the 4 kW residential solar panel installation project in Sai Mai District, Bangkok. The panel design perfectly matches the complex roof shape, safe with a Microinverter, reducing electricity bills by over 27,000 THB/year.

Update on the 4 kW residential solar panel installation project in Sai Mai District, Bangkok. The panel design perfectly matches the complex roof shape, safe with a Microinverter, reducing electricity bills by over 27,000 THB/year.
Project Specification VERIFIED
Project Type
Residential
Installation Location
Sai Mai District, Bangkok
Installation Capacity
4 kW
(Total panel output ≈ 4.5 kWp)
Main Equipment
Solar Panels (8 Panels)
Microinverter
Estimated Electricity Savings
≈ 2,250 THB/month
(≈ 27,000 THB/year)
*Kilowatt Peak (kWp) is the unit used to measure the maximum power output a solar panel can produce under Standard Test Conditions (STC) in a laboratory, not actual production.
It's important to note that kWp represents theoretical peak output, not actual production. In real-world operation, the actual power generated can vary significantly due to numerous factors such as: Weather conditions (e.g., cloudy, rainy), Higher panel temperature, Panel orientation and tilt, Partial shading, Panel cleanliness, Time of day.

4 kW Residential Solar Panel Installation Project in Sai Mai District, Bangkok 

The PUMA SUNERGY team brings you an update on a solar power system installation project for a household in Bangkok. For this project, we were trusted to design and install a 4 kW solar panel system for a residence in the Sai Mai area.

For families with a lifestyle of staying at home during the day, whether it's Work From Home or having elderly and small children who need to turn on the air conditioner to cool down, Installing solar panels on the home roof is considered the best helper in sustainably reducing monthly expenses.

Panel Arrangement Matching the Hip Roof with Safety Using Microinverter

A challenge with many housing estates is that the roof structure is often a Hip Roof, which has sloped areas in multiple directions and complex joints. From the top view, it can be seen that our engineering team has designed the arrangement of all 11 solar panels to beautifully and perfectly match the angles of the roof.

Due to the roof characteristics where panels might face different angles to receive light, choosing Microinverter technology is the most ideal solution. Because the system separates the operation of each panel independently; whichever side receives strong sunlight generates full power without dragging down the efficiency of panels on the other side. Furthermore, this system does not accumulate high Direct Current (DC) voltage on the roof, so you can be 100% confident that it is safe from fire risks.

How much electricity cost can a 4 kW home solar panel installation save? 

The 4 kW system is a very popular size for medium-sized homes. It can generate an average of approximately 450 units (kWh) of electricity per month for home use:

  • Reduce monthly electricity costs: Saves approximately 2,250 THB.
  • Reduce annual electricity costs: Saves around 27,000 THB.

The Payback Period of this system will be approximately 4 - 4.5 years, which is considered a very worthwhile investment because after breaking even, you will get to use electricity during the day for free for over 20 years.

Break-Even Point (ROI) Estimation Graph for the 4 kW Project

Cumulative Value (THB) Time (Years) 4 kW Installation Cost Cumulative Energy Savings Profit Zone Break-even ~4 - 4.5 Years Year 1 Year 2 Year 3 Year 4 Year 5

Estimated Break-even Point based on projected savings of ≈ 27,000 THB/year

Any homeowner interested in knowing what system size is suitable for your house can calculate the initial break-even point and solar panel size for free here. Alternatively, if you are interested in seeing ideas for installation on a metal sheet roof, you can also view the 4.5 kW home solar panel installation project in Phasi Charoen District for more details.

Free On-Site Assessment with PUMA SUNERGY Engineers 

Our team is ready to provide consultation and design a system that emphasizes maximum beauty and safety for your home. View the home solar cell installation package price details or contact our sales department on any business day.

Tel: 061-6479393

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