Introduction
Solar energy has become an increasingly important part of India's electricity mix, with the country's installed solar capacity reaching 168.04 GW by August 2026, according to the Ministry of New and Renewable Energy (MNRE). The growth includes ground-mounted plants, grid-connected rooftop systems, hybrid projects, and off-grid solar installations.
As solar adoption grows across homes and businesses, understanding how solar energy works becomes useful for anyone considering a solar system. From sunlight reaching photovoltaic cells to electricity being converted and supplied to appliances, several components work together to turn solar radiation into usable power.
Let’s explore how this process works and what happens to the electricity generated by a solar system.
What Are the Steps Involved in Converting Solar Energy Into Electricity?
The solar energy working principle involves several stages, starting with sunlight reaching photovoltaic cells and ending with electricity being used, exported to the grid, or stored for later. Understanding these stages can help explain how solar energy works in a practical setting.
Step 1: Sunlight Reaches the Solar Panels
Solar panels contain photovoltaic cells that capture energy from sunlight. When sunlight falls on these cells, its energy excites electrons and causes them to move. This movement initiates the generation of electrical energy from sunlight and is the first stage in understanding how solar energy works.
Step 2: Photovoltaic Cells Generate DC Electricity
As the electrons move within the photovoltaic cells, they produce Direct Current (DC) electricity. The amount generated can vary based on sunlight availability and the design of the solar system. Since most household and commercial appliances operate using Alternating Current (AC), the generated DC electricity needs to be converted before it can power connected loads.
Step 3: The Inverter Converts DC Into AC
The DC electricity produced by the solar panels flows to an inverter. The inverter converts DC electricity into Alternating Current (AC), making it suitable for use by electrical appliances and other connected equipment. This conversion is an important part of how solar power works, as it allows the electricity generated by the panels to be used for everyday requirements.
Step 4: Converted Electricity Powers the Property
Once the electricity has been converted into AC, it flows through the property's electrical system and can power connected appliances and equipment. The electricity generated by the solar system can therefore meet part or all of a property's energy requirements, depending on system capacity and electricity consumption.
Step 5: Excess Electricity Is Sent to the Grid or Stored
A solar system can sometimes generate more electricity than the property is consuming at a particular time. Depending on the system configuration, this surplus electricity can be exported to the local grid or directed to a battery storage system. This is another important part of understanding how does solar power work, particularly for grid-connected and battery-based systems.
Step 6: A Bidirectional Meter Records Electricity Flow
In a grid-connected solar system, a bidirectional meter records electricity flowing in both directions. It measures electricity drawn from the grid when required and surplus solar electricity exported to the grid. This helps track the exchange of electricity between the property and the local grid.
Step 7: Stored Electricity Can Be Used Later
When a solar battery is included in the system, excess electricity can be stored for later use instead of being consumed immediately or exported. The stored electricity can support household or business loads when solar generation is unavailable, such as at night. Depending on the system configuration, battery storage can also provide power during cloudy or rainy periods and certain outages.
What are the Benefits of Having Solar Energy at Home?
Lower Electricity Expenses
Generating electricity from sunlight can reduce the amount of power a household needs to purchase from the grid, potentially lowering monthly electricity expenses.
Greater Energy Independence
Producing electricity at home gives households an additional source of power and can reduce their reliance on conventional grid electricity.
Better Use of Renewable Energy
Solar systems use sunlight to generate electricity, allowing households to meet part of their energy requirements through a renewable source.
Potential to Use Stored Power Later
When paired with a solar battery, excess electricity generated during the day can be stored and used during nighttime, cloudy or rainy periods, or power outages, depending on the system configuration.
Long-term Energy Value
A properly designed solar system can continue generating electricity over its operating life, helping households offset grid electricity costs and potentially improve the long-term value of their energy investment.
How Can Eastman Help You With Your First Solar Setup?
Getting started with solar involves choosing the right system, understanding the installation process, and handling the requirements that come with setting it up.
Eastman Auto & Power Limited provides support across these areas, helping customers move from planning to installation with solutions suited to their requirements.
- Three Types of Solar Setups: Eastman offers on-grid, off-grid, and hybrid solar systems, allowing customers to explore a setup based on their electricity requirements, grid availability, and energy needs.
- One-stop Solar Solution: From selecting a suitable system to getting it installed, Eastman provides a comprehensive solar solution to address different requirements through a single provider.
- 24/7 Support With a 2-Hour Response Time: Customers can access service assistance around the clock, with Eastman offering a 2-hour service response time for support requirements.
- Certified Expert Engineers: Certified engineers support the solar setup process, bringing the technical expertise needed for system installation and related requirements.
- Support With Subsidy Assistance: Eastman provides support through the subsidy process, helping customers navigate the applicable requirements and work towards a more affordable solar setup.
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