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On Grid Solar System
What is On Grid Solar System?
On-grid or grid-connected solar systems are the most common system used by homes and businesses. These systems use either solar inverters or microinverters and are connected to the public electricity grid. Depending on the type of metering used, the solar power you generate is typically used to power your home. Any excess solar power you generate is exported to the electricity grid, and you usually get paid a feed-in-tariff (FiT) or credits for the energy you export to the grid.
Advantages of On-grid solar system
An on-grid solar system, also known as a grid-tied solar system, is the most widely deployed form of rooftop solar across the world. These systems do not need any batteries and are connected to the utility grid power.
It is best suited for customers with stable grid power and minimal power cuts. Other than homes, even educational institutions, industrial units, commercial establishments use these systems as their primary source of power.
An on-grid system is designed to first allow solar energy to be consumed by the customer. Beyond this, if the customer needs any excess power, it is drawn from the grid. If the customer’s energy requirement is lower than power generated from the solar system, excess solar units are exported to the grid. This is possible through a ‘Net-meter’’.
Net-meter is a device that records the energy supplied to the grid and the energy drawn from it. At the end of each month, the net energy consumed is recorded and the consumer is provided with a bill. This feature makes the on-grid solar system a great investment with high returns.
1. Huge reduction in electricity bills
With net-meter in place, the consumer has to pay only for the surplus electricity he consumes, ensuring the bill generated every month is reduced drastically. Many of our customers have been able to reduce their monthly bills by 90%.
2. Easy maintenance
The elimination of batteries in the on-grid system makes the maintenance quite easy. It also eliminates the cost of upkeep of the batteries
3. Synchronize with other sources of power
These systems can also synchronize with a diesel generator on site. This is important in case grid power is not available.
4. Better ROI
Cost of a On-grid solar system is lower than other types of solar systems because there are no batteries. It also generates the highest amount of power compared to other types of solar systems. The minimal maintenance and reduction in monthly power bills ensure the customer gets an ROI of 25 – 30%. This means the customer earns Rs.25,000 for every 1,00,000 they invest in solar.
With these advantages, an on-grid system is best suited for a customer with stable grid power and minimal power cuts. Other than homes, even educational institutions, industrial units, commercial establishments install an on-grid system as the system can synchronize with diesel generators to provide uninterrupted power.
What is in On Grid Solar System?
Solar panels are responsible for transforming sunlight into solar power. The solar inverters are responsible for converting the DC power into AC electricity that can be used in homes. However, several components are essential to getting this to work. They are as follows:
PV modules/solar panels
On-grid solar power system start with PV modules. These rooftop or open-land panels convert sunlight into power. Silicon photovoltaic cells make up each panel. The photoelectric effect produces DC electricity when solar photons hit certain materials. Solar panel output varies depending on sunshine intensity, temperature, and panel orientation.
Residential solar panels yield 250–400 watts per hour. A home solar system’s panel count depends on energy use and installation space. Before choosing PV modules for your on-grid solar system, you must know your power needs and space.
Solar inverter
On-grid solar system for home needs a bi-directional inverter. It converts solar panel-generated DC into AC for household appliances. This inverter stabilizes the output voltage to ensure AC power is at the proper voltage and frequency.
If you add a battery bank, a bi-directional inverter can convert AC to DC for charging. This stores excess solar energy in the battery bank during the day and powers your home at night or with less sunlight. The bi-directional inverter is essential to converting solar energy from panels into residential energy.
AC breaker panel with fuses
The AC breaker panel with fuses is essential. It distributes solar panel electricity from the bi-directional inverter. The panel connects the inverter and filter, which control the quality and stability of AC electricity sent to the residence.
The fuses protect against electrical surges and overloads. The AC breaker panel with fuses is usually near the main electrical panel and can be simply integrated into the existing electrical infrastructure. It’s vital to a well-designed on-grid solar power system due to its durability and functionality.
Solar charge controller
An on-grid solar system‘s cost controller prevents overcharging, which can harm the battery bank and cause system failure. It reduces or stops charging when the battery is fully charged to avoid overcharging.
The battery bank and PV system last longer. When the battery voltage declines, some charge controllers disconnect the load to prevent deep discharge, which might harm the battery. The cost controller is critical for battery health and solar system efficiency.
Electrical meters
On-grid solar systems need electrical meters to track power generation and consumption. These systems use two types of meters. The first meter measures utility grid energy consumption, while the second measures excess solar energy supplied. This lets homeowners track their power usage and avoid overpaying.
This information also helps calculate surplus energy credits and payments by determining the quantity of energy exported to the grid. These meters also monitor solar system performance and identify problems.
Security switches and cabling
Security switches and cabling ensure the safety and reliability of an on-grid solar system for home. Isolation and control switches isolate the bi-directional inverter’s AC and DC sides for maintenance and testing.
However, cabling links the system’s solar components. The cabling must be the right size, installed, and routed properly to avoid damage and interference.
Electrical energy grid
On-grid solar systems need electricity. Solar panels that create more electricity than your home needs feed excess energy into the utility system, earning you credits. Net metering pays solar panel owners for their grid energy.
The net metering agreement lets you borrow power from the grid when your solar panels aren’t producing enough, maintaining a steady electricity supply. The grid-connected solar system ensures your home gets electricity during low sunshine or heavy energy usage.
How Does On Grid Solar System Work?
An on-grid solar system is a renewable energy system connected to the utility grid. Solar panels on the roof or ground convert sunlight into power in a solar system setup. An inverter turns DC electricity into AC. AC electricity is given to the home or business. The grid receives surplus energy from solar panels during daylight hours.
Net metering records the amount of electricity used and sent back to the grid. Excess electricity is credited to the consumer’s account and can be used to offset future expenditures. On-grid solar system in UP is popular due to sunlight and electricity costs.
Feeding extra electricity back into the grid reduces future electricity expenditures. This technology reduces dependence on non-renewable energy and generates electricity cheaply.
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