4 types of home solar power systems

Before you buy the solar power system, do you know that there are 4 types of home solar power systems? Do you know the difference and choose which suit you the best?

On-grid solar power system
Off-grid solar power system
On and off grid solar power system
Batteryless solar power system

4 types of home solar power systems

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Feature

On grid solar power system

Single phase 1-7.5kw;

three phase 10kw-100kw

Working mode: Sell solar power to local power company,Get money from sunshine
Appliance: if your local grid power electricity is stable,but electricity is high cos. Day time use more than Night time, then choose this system. Good for factory and office

Off grid solar power system

Single phase 300W-30KW,

three phase 1kw-250kw

Working mode: In daytime, solar charge the battery, at night battery supply power.
Appliance: if the electricity is not stable, buy off grid solar system supply power day and night.

On and off grid solar power system

Single phase 1-10kw;

three phase 15kw-200kw

Working mode:In daytime, solar charge the battery first, exceed power sell to grid. When the grid stop, the system stop sending solar panel and use battery supply power to home appliance.
Appliance: The place have sell solar power policy but grid power not stable, fail often.

Batteryless solar power system

Single phase 3kw-7kw
Working mode: In daytime, solar power take the load directly. If you have 5kw home appliance, 3kw from solar, and rest 2kw get from the grid.
Appliance:Factory or office.

All solar power systems work on the same basic principles. In daytime, when sun shine on the solar panels. The solar panels convert solar energy into DC current.

Then the DC current can be stored in a battery or send to the grid via the on-grid inverter or into AC power to run the home appliances.

There are 4 types of home solar power systems. And the inverter working principles and the component not same.

If you are considering buying a solar power system. It's important to understand 4 types of home solar power systems how to work and choose the one best suited for your home.
Each system offers different power generation and power storage experience.

Let's discuss more about the different of 4 types of home solar power systems.

On grid solar power system

This types of home solar power systems is the most common one. It's connect to your local utility company’s power grid to sell solar power to local power company.

types of home solar power systems-on grid solar system

And the working mode can be you use solar power first, for example, if you need 5kw, and solar supply 2kw, the exceed 3kw will get from the grid.

And if your place do not have the policy selling solar power, you can use a 0 export the stop exceed solar power send to the grid.

For example, if you need 5kw, and solar supply 10kw, the 0 export will stop the rest 5kw send to the grid. Because your place do not have the selling solar policy, if the exceed 5kw get into grid, the local power company will ask you to pay the 5kw bill.

This types of home solar power systems requires solar panes, inverter, cable and Distribution box. No need battery, thus reducing the amount of equipment needed, and the overall cost of the system. Also, you have to make an interconnection agreement with the local utility company. Or have a 0 export to stop exceed power send to grid.

Advantages

Initial Cost:Purchasing an off-grid solar power system for your home can be very expensive. But on grid solar systems are much cheaper since they use less equipment and no battery in the system. As battery really expensive, it takes part about 1/3 of the system cost. On grid solar power system are the lowest cost, due to having fewer required components.
Low Maintenance: Solar panels have 20 to 25 years of warranty. And no need fuel or another, just clean them on time and they will give you stable power.
Reliability: It will give you power as long as there are sun in the sky
Flexibility: You can update your on-grid solar power system in the future easily. Justadding solar panels and the inverter, not much cost.

Disadvantages

Require stable grid power. If your city grid power fail down, the system will turn not working. This is the base principle for on-grid solar power system. Because when the grid fail, there may be someone checking the city power, if you send the solar power to grid, it will hit the man any may cause him dead.
Cannot use at night.

Off grid solar power system

The working mode for an off-grid solar power system is: in daytime, solar charge the battery. At night, battery supply power. When battery power not enough, the inverter will switch to use grid power or diesel for back up. When battery is fully recharge, inverter will switch to use battery power again. This types of home solar power systems common seen in remote places.

types of home solar power systems-off grid solar system

The off-grid system is installed in a place where no power or city grid break down often.

The system is more expensive than on grid solar power system.
Because it is bigger since it’s not connected to the electric grid. This requires more solar panels and batteries and also the inverter type is different.

Batteries are necessary with such systems, gel battery or lithium battery are most common choice.

A home using off grid solar power system without a battery wouldn’t be able to use electricity at night. The battery keeps excess electricity produced during the day, which can then be used at night to home appliances.

This types of home solar power systems means it can supply power without any other power source .
However, there are a lot of limitations when compared to on-grid solar power systems.
Compare to on-grid solar power system, this types of home solar power systems must have battery for storage. Because battery power is limited capacity, if you want the system work for 24hour, there may requirement many batteries.

Off-grid systems are also more costly, because inverter power is determine the system output power. For example, if you have a 10kw water pump, and then you must have a bigger inverter such as 15kw to supply the power.

And there are big transformer inside the off grid inverter.

types of home solar power systems- transformer

types of home solar power systems- inverter

Advantages

Independence: Can work without any city power or diesel generator
No Blackouts: When your city grid power fail, you can have the off-grid solar power system to supply power to your home.
No Electricity Bills: Notdraw any power from local power company, you are using solar power, and no need pay for them.

Disadvantages

There are controller, inverter, battery different from on-grid solar power system. The controller and inverter price is more than them on-grid solar power system.
Be aware of rainy or cloudy day. If so, there a little solar power charge in the battery. And if you totally 100% off grid, you must consider the rainy day. And it will increase the battery number, which mean the system cost is higher.

Should you go this types of home solar power systems? Well, that depends on your need.

If you want to produce your own energy, and there are no power, or city grid cut down often, the off-grid solar system is suitable for you.

But if you just want to save some money in daytime, and the city grid is stable in your place, we suggest to use on-grid solar power system.

This types of 4 types of home solar power system is most common seen in place no city grid or the grid break down often.

On and off grid solar power system

An this types of home solar power systems is a combination of on grid and off grid solar power system. This type of solar power system is also known as hybrid solar. It become very popular in some place such as South America.

It is similar to the on grid solar power system, but comes with battery for back up.

types of home solar power systems- on and off grid

The working mode is: In daytime, solar charge the battery first, exceed power sell to local power company. When the city grid break down, it switch to use battery for supplying power.

Here show you the on and off-grid solar power system Diagram

Advantages

If the grid stop, you can use battery for home back up. And sell solar to the local power company if the grid is fine.

Disadvantages

This types of home solar power systems is the most expensive system among 4 types of solar power system. Because the inverter type also different. And on and off grid inverter is the most expensive during the 4 type inverters.
High-Level Expertise: This solar power system is complex, and you will need local power company to help you apply the on grid procedureand for the off-grid part installation.

Batteryless solar power system

This is a new type solar power system. And usually come with 3kw or 5kw.

types of home solar power systems-batteryless

It can work without battery, using solar power and grid power together to supply power to home appliances.
For example, if your load is 5kw, and solar supply 3kw, rest 2kw draw from the city grid power.

Without batteries in the solar system, it can help to reduce the system cost and help you save bills in daytime.

And you can put up battery in the future if you need. there are battery terminal on the inverter.

There are MPPT charge controller built inside, and can connect with solar panel input directly.

This types of home solar power systems is a little bit like on-grid solar power system. But the working mode is not the same. It’s not sell solar to local power company, and you can put on the battery in the future.

It means if you work without battery, then the system cannot be used at night.

It seem a pretty good solar inverter, but why not common seen in the market?
Because the batteryless technology still not mature, and some customers say it’s not stale, and if they put the battery into the batteryless system, it works more stable.
This types of home solar power systems is very low cost.

Advantages

No need battery, save cost. And have battery terminal, means you can add battery in the future if you need.
Max 7kw system, which can cover to a home appliance.

Disadvantages

The technology still not mature, and sometime come with cloudy day, the working mode may fail without battery

Last word

4 types of home solar power systems
Picture	Feature
On grid solar power system	If your city grid is stable, and want to save bills in daytime, we suggest to use on-grid solar power system
Off grid solar power system	If you city grid break down often or no power at all, we suggest to use off-grid solar power system
On and off grid solar power system	If your place have policy that sell solar power to grid, but the city grid also not stable, we suggest to use on and off grid solar power system
Batteryless solar power system	If you want to save bill at daytime, or might need battery in the future for night use. We suggest you to use the batteryless solar power system

If you still have questions, and don’t know which system suit you the best, contact us for help.

Hope you will find out 4 types of home solar power systems difference by this blog.

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Ben J

Ben is a researcher, and data analysis expert who has worked for clients in the solar power system. He knows the battery very well.

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4 types of home solar power systems

On grid solar power system

Advantages

Disadvantages

Off grid solar power system

Advantages

Disadvantages

On and off grid solar power system

Advantages

Disadvantages

Batteryless solar power system

Advantages

Disadvantages

Last word

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