PROJECT

Installation Project Solar Cell for Cafe
12 kW, Bang Krachao, Samut Prakan

Update on the 12 kW solar cell installation project at a cafe and restaurant in Bang Krachao, Samut Prakan. Utilizing a Microinverter system to solve tree shading issues, helping reduce electricity bills by over 88,000 THB/year.

ผลงานติดตั้งโซล่าเซลล์ คาเฟ่ ร้านอาหาร ขนาด 12 kW อ.บางกระเจ้า จ.สมุทรปราการ แก้ปัญหาเงาไม้บังด้วย Microinverter โดย PUMA SUNERGY
Project Specification VERIFIED
Project Type
Cafe / Restaurant / Service Business
Installation Location
Bang Krachao, Samut Prakan
Installation Capacity
12 kW
(Total panel output 13.92 kWp)
Main Equipment
580W Panels (24 Panels)
Microinverter HM-1500 (6 Units)
Electricity Savings
≈ 7,379.83 THB/month
(≈ 88,557.93 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.

Solar Cell Installation Project: 12 kW Cafe in Bang Krachao, Samut Prakan 

Update on a solar energy system installation project for a restaurant and cafe business. In this project, the PUMA SUNERGY team was trusted to conduct an on-site assessment and install a 12 kW solar cell system for a cafe located in Bang Krachao, Samut Prakan Province.

The cafe business is one of the enterprises with very high hidden electricity costs during the daytime—whether from large espresso machines, bakery display refrigerators, or air conditioning systems that must remain on to accommodate customers all day. Transforming the roof space into a power generation source  is therefore the most clearly effective method to reduce fixed costs.

Solving Roof Shading Problems with the Microinverter HM-1500 System 

Because the location is in the Bang Krachao area, which is surrounded by nature and tall trees, some parts of the roof space may have tree shadows cast over them during certain times of the day. Our engineering team therefore decided to select equipment that specifically addresses this limitation:

  • 580W Solar Panels (24 Panels):Achieves a total output of up to 13.92 kWp, extracting maximum sunlight efficiency.
  • Inverter Model HM-1500 (6 Units):Utilizing Microinverter technology that isolates panel operations independently. This means that when tree shadows or clouds cover a particular panel, the solar panels in other areas receiving full sunlight will still continue to generate electricity at 100% without dragging down the efficiency of the entire system (whereas with a typical string system, the power would drop entirely). Additionally, it offers very high safety for the building structure due to the low DC voltage on the roof.

How Much Can a 12 kW Cafe Solar Cell Installation Save on Electricity Bills? 

This project can generate an average of approximately 1,570 units (kWh) of electricity per month for use in the shop, which directly impacts the shop's net profit:

  • Reduce monthly electricity costs: Saves approximately 7,379.83 THB
  • Reduce annual electricity costs: Saves up to 88,557.93 THB

With this highly efficient daytime electricity usage proportion, the payback period for this project will be only about 3.5 years. After that, it represents profit from electricity savings that will enhance business liquidity for over 20 years.

Break-even Point (ROI) Estimation Graph for 12 kW Project 

Cumulative Value (THB) Time (Years) 12 kW Installation Cost Cumulative Energy Savings Profit Zone Break-even ~3.5 Years Year 1 Year 2 Year 3 Year 4 Year 5

Estimated Break-even Point based on projected savings of ≈ 88,557.93 THB/year

Restaurant or cafe operators can try to calculate the initial break-even point and solar panel size for your shop by yourself. Or, if you want to compare it with an office business of the same size, you can also view the 12 kW Office Solar Cell Installation Project in Sakon Nakhon for more details.

Free Consultation and On-Site Assessment with PUMA SUNERGY 

If you want to sustainably reduce your electricity expenses, you can view the initial installation package price details or submit information to contact our engineering team right away.

Tel: 061-6479393

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