How to Choose between On-Grid and Off-Grid Solar System?

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You will read:

(1)What are on-grid system and off-grid solar system?

(2)What are the differences between on-grid and off-grid solar systems?

(3)Which is better: on-grid or off-grid solar system?

Solar energy is becoming an increasingly popular alternative for homeowners and businesses looking to reduce their carbon footprint while saving money on their energy bills. There are two sorts of solar systems: on-grid and off-grid. Despite their differences, they both offer similar benefits. Your specific demands and circumstances determine the suitability of a solar system for your home or business. This post will mostly discuss what distinguishes on-grid, off-grid, and hybrid systems, after which you can decide which system is best for you.

the difference between off-grid & on-gird solar energy

What are on-grid system and off-grid solar system?

On-grid solar system

This technology, also known as grid-tied or grid-feed, is the most common and widely employed in both residential and commercial settings.

As the name implies, an on-grid solar system is linked to your local utility grid. On-grid solar systems work in tandem with your home's power supply to generate the maximum amount of electricity possible. Its innovative architecture allows it to identify when and where power is available, allowing it to synchronize power delivery with grid power.

The following components comprise an on-grid solar system:

(1)On-grid inverter (GTI) or microinverters (2)Power meter

Solar panels capture and convert sunlight into DC (direct current) at the start of the system. The inverter converts direct current (DC) to alternating current (AC), which is then routed through a switchboard to supply power to your home and appliances. Finally, the power meter measures power to calculate the amount of electricity produced by both the grid and the solar system. When there is insufficient solar energy, such as at night or on cloudy days, the inverter switches back to the grid.

On-grid solar systems are also less expensive because no expensive battery backup device is required to store excess energy.

Off-grid solar system

Off-grid solar systems are completely self-sufficient and are completely isolated from the electrical utility grid. They rely solely on sunlight as their major energy source. This system is more sophisticated and, as a result, more expensive than an on-grid solution.

The following components make up an off-grid solar system:
(1)Solar charge controller

(2)Battery bank

(3)Off-grid inverter

(4)DC Disconnect (additional)
(5)backup generator (Optional)

A charge controller transfers electricity from solar panels to a solar battery in an off-grid solar system. The charge controller controls how much energy is stored in the battery bank and protects it from overcharging. An off-grid converter converts this electricity into alternating current (AC) to power your home.

By storing electricity in its battery bank, this system allows your home to function totally on solar energy, even at night or on cloudy days. If you live somewhere where there isn't steady sunlight all year, you'll need more battery banks to plan for days when there isn't any solar exposure. You could also consider acquiring a backup generator. These generators typically provide alternating current (AC) power that can be utilized in conjunction with an inverter.

off-gird VS on-grid

What are the differences between on-grid and off-grid solar systems?

When deciding which type of solar system is ideal for you, you must carefully consider your specific needs and circumstances. If you live in an area prone to power outages, for example, an off-grid solar system is a terrific way to ensure a consistent supply of electricity. An on-grid solar power system, on the other hand, could be an excellent alternative if you want to reduce your carbon footprint while simultaneously saving money on electricity. If you reside in an area with solid electricity infrastructure and minimal peak sunshine, it may allow you to participate in net metering and make you feel more secure.

Accessibility to Grid Power

On-grid solar systems can generate electricity from the sun as well as draw power from the public grid. Off-grid systems have the potential to run out of power during prolonged periods of bad weather. On-grid homes can always use the utility company's electricity when it is needed.

Power Generation in Excess of Demand

On-grid solutions may pay dividends when the system generates more electricity than you demand. If your utility company allows net metering, sending excess energy back to the grid can earn you money. You will typically receive credits on your electric account for the energy you contribute back to the grid. In the same way, excess electricity in an off-grid solar system is stored in the battery bank and can be preserved for later use.

Grid Power Outage

One of the most significant disadvantages of an on-grid system is that you will not have access to electricity if there is no sunlight and the grid fails, resulting in a power outage. Unless you opt to purchase a battery bank or generator.

Off-grid solar systems provide peace of mind to homeowners who reside in areas prone to power disruptions or harsh weather. Even if the power system fails, they can continue to use electricity.

Electricity Charges

Because it is tied to your local utility grid, an on-grid system will still result in minimal expenses on your electricity bill. One of the charges is a service fee for connecting your solar system to the grid, as well as a demand tax for the higher electric rate you pay for power used during peak demand periods, or when your home uses the most electricity.

One advantage of off-grid solar systems is that you avoid paying electric bills if you generate your own power. Electric bill elimination can result in significant financial savings for homeowners, especially in areas with high electricity expenses. Every year, producing your own electricity can save you hundreds or even thousands of dollars.

Total Cost

The on-grid approach is easy and economical to implement. It enables residential and commercial clients to profit passively from extra energy generated by the systems. According to an Economic Times study, private, commercial, or industrial buildings can profit from 'Accelerated Depreciation profit' by installing PV rooftop systems, which are presently depreciating at a pace of 80 percent in a year.

While an off-grid option does not require you to pay electric bills, it does require a significant upfront investment. Fortunately, there are a variety of government programs and tax credits available to help with the initial costs.

Off-grid systems powered by LFP batteries require little to no maintenance, and solar panels can last for more than 25 years before needing to be replaced. Off-grid solar can be an excellent long-term investment, especially when the cost of traditional energy sources such as fossil fuels rises.

off-grid VS on-gird

Which one to choose: an on-grid or an off-grid solar system?

Here are a few important factors to consider when deciding which type of solar system is best for you:

1. the budget

On-grid solar systems are usually the most affordable alternative. You'll be able to lower your monthly electric bill while also earning money in the form of credits.

To be viable, off-grid is more complicated and necessitates higher upfront costs for additional equipment such as pricy battery banks.

2. Useful environment situation

If you live in a city with easy access to power lines, an on-grid system is straightforward to install in your home.

However, if you live in an area that is not connected to the power grid, an off-grid system is the best way to power your home.

3. Your Energy Requirements

If you have a large family or building with a high level of power demand, an on-grid solar system is an excellent backup option to ensure you never run out of electricity.

Off-grid systems, on the other hand, have the advantage of being able to store power for 24/7 use if you have a smaller home or reside in an area prone to frequent power outages.

On-grid and off-grid solar systems are viable options for houses looking to add solar to their energy mix.

You may be able to save money on your electric bill by installing an on-grid solar system. Off-grid solar systems enable complete energy independence from aging infrastructure as well as protection against power outages.

Whatever alternative you choose, producing clean, renewable energy, minimizing your carbon footprint, and saving money on energy costs is a win-win situation. Before selecting on the finest form of solar system for you, you must carefully consider your specific needs and circumstances.

Since 2008, Maysun Solar has specialized on developing high-quality solar modules. Choose from our extensive selection of half-cut, MBB, IBC, and shingled solar panels in full black, black frame, silver, and glass-glass. These panels provide outstanding performance as well as beautiful designs that mix in with any building. Maysun Solar has effectively created offices, warehouses, and long-term relationships with great installers across the globe! Please contact us for the most recent module quotations or for other PV-related questions. We are delighted to help you.


Chint. (2023, March 17). Grid-Tied vs. Off-Grid Solar: Which is Right for You? CHINT.

Ecoflow. (2023). What are the differences between On-Grid and Off-Grid solar? EcoFlow US Blog.

Genus. (2021). Major Differences between On-Grid and Off-Grid Solar System. Genus. (2022, January 19). Off-grid or on-grid solar power system, which one should you choose?

Solar-Admin. (2022, December 29). A guide on the key differences between On-Grid & Off-Grid solar system. Solar Square Blog.

Wolf, S. (n.d.). The difference between Off-Grid and On-Grid solar energy.

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