Off-grid solar systems allow you to reduce your dependence on the grid and achieve independence in electricity use, especially for remote areas without electric service. However, the main thing you should consider when installing an off-grid solar system is the cost of the off-grid solar system. In this article, we introduce you to the cost of solar systems through different categories.
1. Component cost of off-grid solar system
The cost of off-grid solar panels is calculated according to the area of the solar panels and according to the number of solar panels.
According to the area of solar panels: Generally speaking, most of the market nowadays quotes the price according to the area of solar panels, and usually, the price of solar panels is 0.1$/watt.
According to the number of blocks of solar panels: However, solar panels will be quoted according to the number of blocks of solar panels in addition to the area, for example, the cost of a 300W solar panel is about $35, and the cost of a 550W solar panel is about $70.
The cost of off-grid inverter: the main function of off-grid inverter is to convert DC power into AC power, but the power of off-grid inverter is different, the specific price will be different, for example, the price of a 3KW inverter is about 290 U.S. dollars, a 5KW off-grid inverter is about 500 U.S. dollars, a 10KW off-grid inverter is about 950 U.S. dollars. In addition to this, the price of an off-grid inverter is also related to the advanced features of the inverter, for example, an inverter with an intelligent management system will naturally cost a little more.
The cost of solar battery: Although there are many types of solar battery, in order to have better energy storage, we usually use lithium iron phosphate battery in our solar system, and the price of one 10KWh lithium iron phosphate battery is around 1200 USD. However, in order for your solar system to generate electricity completely stored in the solar battery, a solar battery may not be enough, if the power of the solar battery is installed to calculate the cost of solar battery, the price of solar battery is about $130 / kwh.
The cost of solar panel bracket: generally, now we install solar panels using brackets are mostly fixed bracket, fixed bracket installation cost in $7/m². Fixed bracket is one of the cheaper types of brackets. Because the portable bracket can be contracted, so the installation cost of portable bracket will be more expensive than the fixed bracket cost, usually for $8/m². Tracking mounts are equipped with the function of tracking the solar energy, usually this kind of tracking mounts will be very expensive, not suitable for home use.
Cost of PV connection cable: During the installation of solar system, we generally use 4mm² and 6mm² PV connection cable. The cost of this PV cable varies from region to region. Generally speaking, the cost of this size of PV connecting wire is about 1 USD/meter.
Labor Cost: Labor cost is mainly determined by the size of your off-grid solar system, the complexity of the design, and the level of local economic development. Installing the same solar system in some areas with better economic development will definitely require more than in areas with poorer economic development. However, the labor cost may account for about 15% of the total cost of the components of the solar system. For example, if you install a system with 10KW solar panels and 20kWh lithium iron phosphate solar battery at a total cost of $5,000, the labor cost will be about $750.
2. Off-grid solar system costs by type
In addition to calculating the cost of off-grid solar system according to the basic solar components, off-grid solar system will also calculate the cost of solar system according to different types.
Common off-grid solar system: Nowadays, it is common to install this kind of common off-grid solar system, generally its components are off-grid solar panels, off-grid inverter, off-grid solar cells, the cost of common off-grid solar system will be different depending on the power of the system. Here are some common costs of common off-grid solar system.
A 3kw PV system + 5kWh battery storage system costs about $1600.
A 5kw PV system + 10kWh battery storage system costs about $2,600.
The cost of an 8kw PV system + 20kWh battery energy storage system is approximately $4,000 USD.
The cost of a 10kw PV system + 20kWh battery energy storage system is approximately $5,400 USD.
The cost of a 20kw PV system + 40kWh battery storage system is approximately $10,400 USD.
The cost of a 50kw PV system + 100kWh battery storage system is approximately US$20,000.
DC off-grid solar system: it is the simplest solar system, he is generally applicable to the area with DC electricity, due to the lack of inverter and solar battery, can only directly power a small number of a few appliances. The components of this system are only a few off-grid solar panels, so it is less expensive.
A 1kw PV system costs about $150.
A 3kw PV system costs about $400.
Light and wind combined off-grid system: the general off-grid solar system installed solar cells is to ensure that in the sun is not enough, to provide power for the family, but in the long term light is not enough areas, so that the family power supply is still not guaranteed, so these areas are usually applied to the light and wind combined off-grid system, the solar energy as the main power supply, the wind energy as a backup power supply, which is just enough to provide a reliable power supply for the family. reliable power supply for households. The cost of this off-grid system is as follows
3kw PV system + 5kWh battery storage system + 4.2kw wind turbine costs about $2000.
A 5kw PV system + 10kWh battery storage system + 6kw wind turbine would cost approximately $3100.
The cost of a 10kw PV system + 20kWh battery storage system + 12kw wind turbine is approximately $5,000 USD.
A 20kw PV system + 40kWh battery storage system + 24kw wind turbine costs approximately $11,200.
Off-grid solar system equipped with a generator: Off-grid solar systems may not have enough power supply for cloudy days. In addition to the off-grid solar system that combines wind and light, in some areas where wind energy is low, they will use off-grid solar system with generator to make the home electricity more reliable. This type of off-grid solar system will cost more. Below are the costs of off-grid solar systems with generators of various wattages.
A 3kw PV system + 5kWh battery storage system + 4.2w diesel generator costs about $1700.
A 5kw PV system + 10kWh battery storage system + 6w diesel generator costs about $3000.
The cost of a 10kw PV system + 20kWh battery energy storage system + 12w diesel generator is approximately $4800 USD.
The cost of a 20kw PV system + 40kWh battery storage system + 24w diesel generator is approximately $11,000 USD.
CONCLUSION:
The cost of an off-grid solar system can be calculated by the cost of the components of the solar system or by the type of off-grid solar system. Off-grid solar systems are still more affordable in terms of cost over the long term, and off-grid solar systems do not suffer from temporary power outages during peak periods of electricity usage.
