An 8kW solar system is an optimal choice for larger residences and commercial spaces, as it provides significant energy output leading to potential cost savings. Based on your requirements, you can select either an on-grid or off-grid system. This article delves into the costs of both setups and provides a detailed breakdown of the 8kW solar system price.

8kW Solar System Price: Detailed Component List and Cost

An 8 kW solar system is ideal for larger homes or places with regular power outages, which average 7-8 hours per day. Its potential to generate around 40 units of power per day makes it ideal for properties that consume 35 to 40 units per day. It is suitable for residences, workplaces, petrol stations, farmhouses, schools, and hotels.

8kW Solar System Cost Breakdown

The detailed prices of the solar components are given below:

Component/ServiceCost ()
8kW Solar Panel (various types)Approx. 2,60,000
8kW Solar Inverter Approx.1,00,000
8kW Solar Mounting StructureApprox. 32,000
8kW Solar WireApprox. 20,000
8kW ACDB & DCDBApprox. 5,000
8kW Earthing KitApprox. 24,000
Solar InstallationApprox. 32,000
Civil WorksApprox. 30,000
Supplementary Installation AccessoriesApprox. 40,000
Total Cost (after tax credit)Approx. 5,23,000

Also Read: 20kW Solar System Cost: Off-Grid and On-Grid 

8kW On-Grid Solar System Price

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An on-grid solar system operates without batteries, thus eliminating the need for battery backup and considerably reducing the overall 8kW solar system price. When opting for an on-grid setup, homeowners might be eligible for relevant subsidies. The process and percentage of subsidies vary by location, although most systems can receive up to 30% subsidies. Without these subsidies, the cost of an 8kW system in India is roughly 4, 00,000 to 5, 00,000. In the United States, the typical cost of installing an 8 kW on-grid solar system ranges from $20,000 to $30,000.

8kW Off-Grid Solar System Price

For those looking into an off-grid solution, the 8kW solar system with battery cost is an essential consideration. The cost for an 8kW off-grid solar system in India ranges between 5, 20,000 to 5, 80,000. This system necessitates the use of batteries, battery inverters, panels, normal inverters, and a backup energy supply. In the U.S., this system, when fully installed as a ground-mounted set up close to home, has an average cost of $55,000 to $75,000.

Also Read: On Grid Vs Off Grid Vs Hybrid Solar – Which is Best?

Components of 8kW Solar System

A thorough 8kW solar system cost breakdown is as follows:

1. Solar Panel Options

Solar panels are available in a wide range of sizes and types, with prices varying depending on capacity and technology:

  • Polycrystalline Solar Panel (330 W): 10,000 – 11,000 each.
  • Monocrystalline Solar Panel (390 W): 13,000 – 14,000 each.
  • Bifacial Solar Panels (440W/ 530 W): Around 22,000 each.

For larger setups:

  • 8kW Polycrystalline Solar Panel: 2, 00,000 – 2, 50,000.
  • 8kW Mono Perc Half Cut Solar Panel: 2, 50,000 – 3, 00,000.
  • 8kW Bifacial Solar Panel: 3, 00,000 – 3, 60,000.

2. Solar Batteries

In most cases, 10 batteries are required for an 8kW system. The 8kW solar system with battery cost can be influenced by the choice of battery capacity. If the basic backup is adequate, 100Ah batteries are the most cost-effective option, while those who require prolonged backup might choose 150Ah or 200Ah batteries.

Solar batteries come in a variety of capacities to meet a wide range of applications and budgets. Though it may be tempting to choose a smaller battery to save money, a 100Ah battery, which costs roughly 10,000, is typically recommended. For those seeking more extensive battery backup, a 150Ah battery is an option at approximately 15,000. The cost for 10 units of 100Ah batteries totals 1, 00,000, and for 10 units of 150Ah batteries, it’s 1, 50,000.

Also Read: 5kW Solar System Price with Battery

3. Solar Inverter Selection

Inverters are an essential component of solar systems. They convert direct current (DC) from solar panels to alternating current (AC) for domestic usage. Inverter costs roughly 10,000 per kilowatt. For an 8-kW system, expect to spend between 70,000 to 80,000, based on the inverter technology selected.

Types and Prices:

  • String Inverter (7-10.5kW): 90,000.
  • Micro Inverter: 1, 60,000.

A 10kVA solar inverter is usually recommended for an 8kW solar installation. This size is suitable for 8kW solar panels and has a load capacity of 8kW. For consistent 8kW loads, a 12.5kVA inverter is a better option.

4. Solar Mounting Structures

The panel stand, used for mounting solar panels, typically costs between 1,500 to 2,000 each. The total cost of an 8 kW system structure would be roughly 30,000 to 35,000.

5. Solar Wires

The wiring, which includes both AC and DC variations, is critical for the installation of the solar system. This wiring typically costs between 20,000 to 30,000.

Additionally, check out the Solar Cable Size Selection Guide For PV Plants


Distribution boxes, both ACDB and DCDB, play an important function in protecting the solar system. For an 8kW solar system price, the addition of distribution boxes can add up the cost of around 5,000 to 10,000.

7. Earthing Kit

Earthing kits, which are necessary for electrical fault protection, include components such as a lightning arrester and an earthing rod. The total cost of the package ranges between 20,000 to 30,000.

8. Solar Installation

Depending on the size of your property, installing an 8kV solar system cost between 30,000 to 40,000.

9. Additional Costs

  • Net Metering Device: Ranges from 20,000 to 30,000.
  • Civil Works: Expected to be between 20,000 and 30,000.
  • Monitoring Device: Typically priced from 20,000 to 25,000.

Furthermore, other installation accessories are expected to contribute an extra 30,000 to 40,000.

Also See: 3kW Solar System Price: Off-Grid and On-Grid

Factors Affecting 8kW Solar System Price

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The following factors must be considered before making any purchase decision.

1. Budget Assessment: It is critical to evaluate your budget. If you are on a tight budget, alternate solar panel technology or smaller batteries may be necessary.

2. Additional Components: The 8kW solar system price includes various components other than just inverters and panels like mounting supports, wiring, grounding equipment, and ACDB & DCDB boxes that might raise the overall cost.

3. Battery Backup: You may want to consider adding batteries for nighttime or adverse weather conditions, but they will increase the expenses.

4. Maintenance: Solar systems are typically low-maintenance. Regular inspections and cleaning ensure that they operate at peak performance.

5. Mounting: Some properties may be unable to accommodate the size of this system on the roof. Ground mounting is another option, but it may be more expensive.

6. Net Metering: Many areas provide net metering, which allows you to feed excess solar power back into the grid. This arrangement may result in monthly energy bill credits, which will lower your overall energy costs.

Cross-Reference: Growatt SPH 8000 TL3-BH-UP | HYBRID 3-Phase inverter (8kW capacity)

Note: Keep in mind that the price of setting up a solar system can fluctuate based on factors like location, chosen components, labor charges, and any other unique needs. For a precise estimate for your area, it’s advisable to reach out to a local solar installation specialist. 

The blog highlighted the 8kW solar system’s price components, from essential equipment like solar inverters, batteries, and panels to safety devices such as ACDB, DCDB, and earthing kits. While the initial expenditure may be substantial, the long-term benefits cannot be overlooked. Nevertheless, it’s crucial to select high-quality components from recognized suppliers and set a realistic budget from the start.

Recommended: 3kW Solar System Price: Off-Grid and On-Grid


Olivia is committed to green energy and works to help ensure our planet's long-term habitability. She takes part in environmental conservation by recycling and avoiding single-use plastic.

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