1. Solar Panels capture sunlight.
Solar panels on the roof absorb sunlight and convert it into direct current (DC). The stronger the sun, the more power it produces.
Article · Getting to know solar energy
What is a Solar Rooftop? Easy to understand explanation for beginners.
Answers are short, to the point, and don't use unnecessary technical jargon. For people who have just heard the term Solar Rooftop and want to understand it before deciding to study further.
Brief summary
What is a Solar Rooftop?
A solar rooftop is a solar PV system installed on a home or building roof to convert sunlight into electricity for on-site use. Helps reduce the amount of electricity that must be purchased from the utility during the day. The word "Solar" means about the sun, and "Rooftop" means on the roof. When combined together, they mean a solar power generation system installed on the roof.
Thai people often call this system by many names, such as solar PV, solar PV, or solar rooftops. which means the same system
Working principle
How does Solar Rooftop work?
Explained in simple steps, from getting sunlight to actually using electricity in your home.
2. Power inverter
The inverter converts the panels' direct current (DC) into alternating current (AC) for the building's electrical loads.
3. Use electricity in the house immediately.
The home or building uses the generated electricity first, reducing the amount purchased from the utility during the day.
4. Excess electricity
How surplus generation is handled depends on the system design and the local utility's requirements. Confirm the permitted arrangement before proceeding.
Get to know the equipment
Main components of a Solar Rooftop system
Solar Panel
The main equipment that receives sunlight and turns it into electricity. Installed on a structure attached to the roof.
Inverter (Inverter)
A device that converts direct current from the panel into usable alternating current. It is considered the heart of the system.
Panel mounting structure (Mounting)
A set of structures that securely secure the solar panels to the roof. Must be designed to suit the condition of each type of roof.
Wiring system and protection equipment
Wires, breakers, and short circuit protection devices For the safety of the system and users
Advantages
Advantages of installing a Solar Rooftop
- Reduce the amount of electricity that must be purchased from the utility during the daytime.
- Use clean energy from the sun Indirectly reduce greenhouse gas emissions
- Most solar panels last for decades as guaranteed by their manufacturers.
- Maintenance is not complicated compared to other energy production systems.
Actual bill savings depend on energy yield, the consumption profile, and site conditions; no single savings figure applies to every home.
before deciding
Things that beginners should know before deciding to install
- The appropriate system size should be based on your electricity bill and actual electricity usage behavior. Don't choose according to popular sizes.
- The condition and structure of the roof must support the weight of the panels and the lifespan of the system.
- The original electrical system of the house or building must support connection to the solar PV system.
- You should choose a service provider with expertise and after-sales service.
- Tax deduction rights or government measures can be changed. You should check with the relevant agencies before making a decision.
Frequently asked questions
Questions that beginners often have about solar rooftops
Will the power stay on during a grid outage?
A standard on-grid system shuts down during a grid outage for safety. Backup power requires a compatible inverter, battery, properly designed Backup/EPS circuit, and transfer equipment; adding a battery alone is not enough.
Can the system generate electricity on cloudy or rainy days?
Yes, but output falls with lower solar irradiance. Solar panels do not generate electricity at night.
Do I have to have a battery to store electricity?
Most basic systems do not require batteries. A battery system adds cost but may be needed for energy storage or backup power, subject to the inverter and backup-circuit design.
How is a Solar Rooftop different from a Solar Farm?
A Solar Rooftop is installed on the roof to produce electricity for use on-site. A Solar Farm is a large number of panels installed on the ground to produce electricity for commercial sale.
How often do I need to maintain it?
Maintenance is generally straightforward: clean the panels when needed and have the system inspected at the intervals recommended by the installer.
Who can install a Solar Rooftop?
Solar PV can be installed on homes, commercial buildings, schools, foundations, cooperatives, and factories. Each system should be sized for the site's actual electricity use. See more at solar PV installation service
Want to know how suitable your home or business is for the system?
Send the electricity bill to the PTH GREEN team to help with a preliminary assessment. There is no charge.
Related articles: 5 Things you need to know before installing a solar rooftop · Electricity bill 50,000 baht. How many kWp of solar should be installed? · What is the difference between On-Grid and Hybrid?