How Much Does an Off-Grid Solar System Cost? A Complete Price Breakdown

"So, you're thinking of going off-grid with solar? Fantastic! But then comes that elephant in the room, often voiced by a well-meaning technician: 'So, are you ready for the upfront cost?'

And let's be real, it's a huge question because there’s no one-size-fits-all price tag. What you'll actually spend can swing wildly based on how much power you gobble up, your spot on the map, the size of your setup, and the quality of the gear you choose.

Good news? Here at The Solar Store, we've helped thousands of people make the leap to off-grid living, so we’ve got a solid grip on the real numbers.

That's exactly why we put this guide together. We'll break it all down for you – from solar panels and batteries to inverters, wiring, the actual installation, and even ongoing maintenance.

By the time you're done reading, you'll have a much clearer picture and feel way more confident planning your off-grid adventure."

What Does an Off-Grid Solar System Consist of? 

Buying an off-grid solar system means you plan to generate and store your own electricity without depending on the national power grid. 

The entire package would contain: 

1. Solar panels collect energy from the sun

2. The charge controller manages the energy going into the battery

3. A battery bank stores electricity for use when there’s no sun (at night or on cloudy days)

4. Inverter changes the stored power from DC to AC, so your appliances can use it

5. Other components, such as cables, mounting racks, breakers, etc.

Depending on your chosen system, the off-grid solar systems in our inventory cost between $6,595 and $38,995. 

There are a few factors that influence the price. 

Factors That Determine The Cost of Off-Grid Solar System

It’s easier to break down the cost of an off-grid solar system when you stick with a particular power consumption need. So, for the sake of this article, we will use the one supplied by a customer as the basis of our calculations. 

We understand that you may have a different need for power consumption or may even want an off-grid solar system for a large-scale project.

If you have questions or are ready to get a quote for a full system, please speak to our experts or go to our QUOTE ME form for a free quote.

That said, here are the factors driving the cost of an off-grid solar system. 

1. Your Energy Needs (Power Consumption)

This is the most important factor. You must first calculate what appliances you want to power (TV, fan, lights, fridge, freezer, pumping machine, etc.) and how many hours you use them daily. 

The table below is a case study of a customer's power consumption needs. Let’s use it as an example: 

The total daily usage for this customer is 4,830 Wh or 4.83 kWh. 

It means she needs a system to generate and store at least 4.83 kWh daily, ideally more (to cover rainy days or cloudy weather).

This, of course, influences the cost compared to other power needs. 

2. Battery Size and Type

Batteries are often the most expensive part of an off-grid system.

You want enough storage to power your appliances at night and during low sunlight. From our experience, most people wish for 1–3 days of backup.

Battery capacity is measured in Amp-hours (Ah) or kilowatt-hours (kWh).

If you consume 4.83 kWh/day (still using the example) and want a two-day backup, you need about 4.83 x 2 = 9.66 kWh of battery storage. 

We usually recommend Lithium-ion batteries, which are lighter and have a longer life. The cost for this power need starts at $1,000. 

3. Solar Panel Size and Quality

You need enough off-grid solar panels to generate your daily energy usage. The size of the solar panel (and its quality) will influence the price of the overall off-grid system. 

• The general formula for getting the right solar sizing is: Total watts needed = Total daily usage ÷ Peak sun hours

Still working with the 4.83 kWh per day, 4,830 Wh ÷ 5 hrs = 966W (let’s say you add 25% for losses. So you need ~1,200W of panels.

It means you’ll need 4 to 6 solar panels of 250W to 300W each. Depending on the brand and model, this runs from $132 to $350 alone. 

4. Inverter Size and Type

The inverter should handle the maximum power your appliances need at once.

If your fridge (150W), TV (100W), and fan (60W) run at the same time, that means 150 + 100 + 60 + lights = ~500–700W

With that in mind, you’d want to include a 1.5kVA to 2.5kVA inverter in the off-grid solar system. Depending on their capacity, off-grid inverters range from $359 to $6,609. 

5. Charge Controller

Every off-grid solar system will come with a charge controller. It protects your batteries from overcharging.

This can also influence the overall cost. For example, MPPT controllers are more efficient than PWM. Also, the size of the controller depends on the solar panel setup

6. Installation and Accessories

If you’re not experienced in the technicalities of setting up a solar system, then it’s better to contract the installation. 

So, in addition to getting the unit, additional costs can come from mounting structures, cables, breakers, fuses, labour, and so on. 

All the factors influencing the price of an off-grid solar system hinge on your daily power needs. 

That’s why the first and most important step is to list your appliances, their wattages, and usage hours before anything. 

Again, the total cost of an off-grid solar system can range from $6,600 to $39,000.

4 Best Off-Grid Solar Systems for 2025

Now that you know the price range to expect, we’ve made the decision easier for you. 

At The Solar Store, we offer practical, reliable solar energy systems to help companies with their energy needs and allow people to live off-grid with energy independence.

Here are the best Off-Grid solar systems carefully picked by our experts. You can get any of these from our solar store at fantastic prices.

1. The 3.24 kW EG4 Off-Grid Solar Power

This 3.24kW EG4 Off-Grid Solar Power high-quality solar power offers exceptional performance, efficiency, and reliability. 

It consists of:

• A high-efficiency solar panel is called “Hyundai HiS-S405YH(BK) panels.” They are designed to provide high performance even in small spaces. These panels have 132 half-cut bifacial monocrystalline cells, which help trap sunlight from both sides for better energy production.

• A strong Off-Grid inverter: The EG4 6000XP inverter is high-performance, with a continuous output of 6,000W. It converts the solar panels and batteries' DC power to AC power and supports the panels, batteries, and generator. 

• Long-lasting lithium batteries: These batteries are all EG4 LiFePower4, offering a voltage of 51.2V and a capacity of 100Ah. If used daily, they can last up to 15 years. They also have an emergency stop function and fire arrestors for safety. 

• An internal battery management system (BMS).

2. The 8.14 kW Complete Off-Grid Solar Power System

 

This 8.14kW complete off-grid solar power system comes with the “Hyundai HiS-S405YH(BK) panels.” The panel's bifacial design helps it provide high performance by trapping sunlight from the front and rear sides, improving energy production by 20%, even in small spaces. 

The panel has 132 half-cut bifacial cells, which help increase efficiency, boost power output, and reduce energy loss.

Key features also include: 

• An advanced off-grid inverter: The EG4 12000XP inverter provides high performance, with a continuous output of 12kW and an input capacity of 24kW PV. This ensures a constant power supply. It features a dual Maximum Power Point Tracker (MMPT), which can enhance its efficiency.  

• Long-lasting indoor wall-mount battery: The EG4 14.3 kWh battery provides 14.3 kWh capacity and has a lifespan of about 15 years. This battery has an advanced Battery Management System (BMS) that ensures high performance. It also has an onboard LCD touchscreen, integrated self-heating, and built-in 600A busbars.

• A dual fire arrestor.

• Emergency stop functions.

•  A comprehensive protection

• User manual

3. 9.72 kW Complete Off-Grid Solar Power

 

This 9.72kW Complete Off-Grid Solar Power high-quality solar provides high performance and long-term value. It is designed to withstand any condition. 

It consists of the following:

• An efficient solar panel with Bifacial technology: This is called “Hyundai HiS-S405YH(BK) panels.” The panels are designed to provide high performance, attracting sunlight from the ground and increasing efficiency by 25%. They are built to be durable and perform well. The panel has a bifacial monocrystalline module that offers efficiency.

• A powerful Off-Grid inverter: The EG4 12000XP inverter provides high performance with a continuous output of about 12kW and a capacity of 18000 W. It converts the solar panels and batteries' DC power to AC power for use. The inverter includes an MPPT solar charger, WiFi connectivity, parallel stacking, and generator auto-start.  

• Durable EG4 14.3kW indoor wall-mount batteries: These high-capacity batteries offer a high capacity of about 51.2V. They can last for more than 15 years and can be a great backup. They are resistant to dust, water, and harsh weather conditions. The batteries have the BMS (Internal Battery Management System) feature that protects them from overcharging, thermal issues, and undervoltage, including a built-in heater.

• A user manual

• Spanner tool set

• Branch connector

4. 19.2 kW Off-Grid Solar Power

 

This 19.2 kW Off-Grid Solar Power one is the most costly option yet. And for good reasons. It is reliable and built for off-grid living. 

It consists of:

• A high-performance bifacial solar panel is called “Hyundai HiS-S405YH(BK) panels.” The panels are designed to perform well even in small spaces and tough conditions. 

• A heavy-duty off-grid inverter: The two Sol-Ark SA-15K-2P inverters perform well and have a continuous output of 30kW. They are very reliable and have a 240V output. 

• Four durable EG4 14.3 kWh batteries: These batteries all have EG4 LiFePower4, which provides high energy autonomy and backup and ensures long-term energy and durability.

• A built-in WiFi

• App control

• MPPT solar charging

• Battery management

Final Thoughts

The off-grid solar systems in our inventory are invaluable for remote homes and cabins, RVs and boats, and even industrial applications like telemetry, cathodic protection, and telecommunications in remote locations. 

There’s no fixed price for off-grid solar systems, as it all depends on your power needs. 

However, we’re confident that this article has, at least, given you one less thing to worry about as you invest in your next solar system. 

If you have questions or are ready to get a quote for a full system, please reach out or go to our QUOTE ME form to get a free quote. Contact us: info@thesolarstore.com