How Do Solar Panels Work
Sun is the source of all energy that maintains the environment and life in general on Earth. By harnessing the radiant energy of the Sun, living and nonliving things on Earth create a sustainable ecosystem that keeps us alive.
Solar panels are a tool that can help harvest power from the abundant sun and generate electricity wherever they are installed. With the production of commercial solar modules, WINAICO can now provide electricity from the sun to power your homes and business and reduce a dependnacy on dirty fossil fuels.
In this article we will share with you how solar panels are made and how do solar panels work to generate clean, renewable energy to power homes and businesses.
What Are Solar Panels Made Of?
Solar panels are made by stringing an array of solar cells together and laminating the solar cell array between the reinforced glass and UV-resistant back sheet. The encapsulated components are protected from all the environmental elements that appear wherever solar modules are installed.
Solar cells inside WINAICO panels are made of silicon, one of the most abundant materials available on Earth, which is also the key material for semiconductors. The silicon wafers generate an electric field when exposed to sunlight, which is captured by the silver metal contacts running over the surface and rear
The glass on the front side of the solar module is coated with anti-reflective coating to trap light energy by reducing reflection and strengthened to protect solar cells from mechanical stresses and the weather.
Solar cells are encapsulated between the reinforced glass and UV-resistant back sheet.
The insulating sheet seals the solar panel on the backside to protect the solar cells from moisture damage, and help dissipate heat to keep the solar cells operating at top efficiency. Finally, WINAICO’s unique frames complete the solar module to reinforce the structural strength of the overall design.
The combination of all the different components results in a beautiful balance of performance and design. All WINAICO modules include quality assurance checks to ensure a complete product fit for your rooftop.
How Do Solar Panels Work?
Solar panels work by creating free electrons from atoms when photons, or light particles, penetrate into the solar cells. The addition of light energy in the silicon completes an electrical circuit causing a flow of electrons through the metal busbars.
As the solar cells are strung together in an array within the solar panel, free electrons will generate voltage and current which increases as more modules (and therefore silicon cells) are attached together. Solar power is a unique power generation technology as it can be complete modular. For example a 10 MW solar farm and a 5 kW residential system can use the exact same modules but differ in volume. The solar panels that are installed on your roof will create a electrical system that is suited to generate the required power for your home.
How Do Solar Panels Generate Electricity to Power Your Home?
When solar cells generate free electrons from light, direct current (DC) electricity flows through the solar panels throughout the array on your roof. However the majority of appliances in your home run on alternating current (AC) which requires a specific electrical circuit that can change DC power into AC. This device is commonly known as an inverter is an essential component for all solar panel installations.
Solar panels on the roof are connected to inverters and a net meter before connected to the grid.
Modern inverters on the market can perform more than just inverting DC to AC electricity, but also provide fault detection, monitoring, and maximum power point tracking (MPPT) of the solar modules, to make sure they convert maximum energy from different levels of light intensity.
What Else Do You Need in a PV System?
While solar panels and an inverter make up the core of a PV system, you may need additional components to complete a perfect installation for your home.
- Net meter – a net meter helps the power company keep track of the energy flow between your home and the grid. When the home consumption exceeds energy generation, for example in the evening, the net meter rolls normally to track your energy consumption. While your solar installation is generating more electricity than your appliance can consume, the net meter provides you with a credit against the power bill.
- Battery storage – since the solar modules only generate electricity during sunny days, you may need battery storage to store excess energy for use during rainy and cloudy days. The battery storage becomes most important if you live in a rural area with an off-grid system, to help you completely cut off from the dependency of the power grid.
- Monitoring system – a good inverter should provide monitoring capabilities to help you track the performance of your solar modules, detect faults, and remind you to wash them to maintain high energy production.
- Mounting system – a good mounting system can fix solar panels on your roof, keep the cables tidy and protect your roof tiles.
- Insurance – even the best components money can buy may be knocked out by natural disasters and human error. Having good insurance for your PV system can help protect your system from any improbable catastrophe.
By understanding how solar panels work, you can consider investing in solar to start saving electricity bills.