At the moment when new energy is booming, more and more residents are beginning to pay attention to green and environmentally
friendly energy utilization methods.Mr. Li from a coastal city has a two-story building with a spacious courtyard at home. He has always
hoped to use the roof and courtyard space to achieve energy self-sufficiency, reduce electricity costs, and contribute to environmental
protection.After multiple investigations and professional evaluations, a set of photovoltaic power generation solutions designed for
residential buildings have opened up a new green life for him.
This plan combines the actual situation of Mr. Li’s home to reasonably plan the layout of photovoltaic modules on the roof and courtyard.
Considering that the roof area is limited and the daily lighting and drying needs need to be taken into account, the technical team has
adopted high-efficiency single crystal silicon photovoltaic modules to maximize the use of roof space without affecting normal life.In the
courtyard, we cleverly avoid the main activity areas and lay photovoltaic panel arrays beside the walls and idle open spaces. The installed
capacity is finally determined to be 25kW, which not only meets the daily electricity needs of the household, but also has excess electricity
for grid-connected sale.
In terms of power access, the system is connected to the user’s power grid and the public power grid with a 220V/380V voltage level
through a bidirectional meter.When the photovoltaic power generation is greater than the household electricity consumption, the excess
power will be automatically incorporated into the public power grid to supply power to the surrounding areas, and Mr. Li can also obtain
corresponding power sales revenue; and at night or when there is insufficient light, the system seamlessly switches to the public power
grid for power supply, ensuring uninterrupted electricity consumption.
This photovoltaic power generation system shows high user-friendly characteristics.In terms of operation, Mr. Li can view the power
generation, electricity consumption and revenue in real time through the mobile APP, which is simple and convenient. During the
installation process, the construction team works efficiently, minimizes interference to Mr. Li’s family’s life, and completes the installation
and debugging in just one week.In terms of power generation efficiency, thanks to efficient components and intelligent control systems,
the system can maintain a high power generation efficiency even in cloudy weather, with an average annual power generation of about
28,000 kWh, basically meeting the energy consumption needs of households and some electrical equipment, greatly reducing electricity
consumption costs.
Security is the top priority.The entire system is equipped with complete lightning protection, fire protection, leakage protection protection
devices, and intelligent monitoring systems. Once abnormal situations occur, the system will automatically cut off the power supply and
issue an alarm to ensure the personal and property safety of residents.Since its inauguration, the photovoltaic power generation system
has been operating stably for more than two years, not only saving Mr. Li tens of thousands of yuan in electricity bills, but also obtaining
considerable additional income through power sales, truly achieving a win-win situation between economic and environmental benefits.
This case fully proves that the photovoltaic power generation solution designed for residential roofs and courtyards is an ideal choice for
helping residents achieve green and low-carbon life and improve energy utilization efficiency with its advantages such as user-friendly,
efficient power generation, and safe and reliable. It also provides more families with reference to green energy application examples.