How Much Does Off Grid Solar Cost?

The number of solar panels required to go off the grid is purely determined by the following variables:

To rely totally on its own energy output, the average off-grid home requires roughly 7 Kw (or 7000 Watts) of power.

Solar panels come in a variety of shapes, sizes, and designs. The amount of solar panels you’ll need to go off-grid is determined by two primary factors: your energy needs and the performance output of each panel.

  • Standard testing conditions (STC) are used to rate panel performance: 1,000 W/m2, AM 1.5 sun spectrum, and 25 C module temperature.

A 100-watt solar panel, for example, is 47 x 21,3 x 14 inches in size. The dimensions of a 200-watt solar panel are 64 x 26 x 14 inches (these are rough estimates).

The larger the framework, the more photovoltaic cells may be installed inside of it, resulting in increased performance.

If your energy needs were the same as the average (7 kW), and you used 200-watt solar panels, you’d need about 35 panels to go off the grid. Alternatively, 20 350-watt solar panels might suffice.

You’ll need to calculate the total square footage to get an idea of how much space 35 solar panels will take up.

  • 35 solar panels will take up around 389 square feet of roof space on your property. This gives you plenty of room if you decide to add more panels to your system in the future.

To make things easier for you, we’ve put up this chart that shows you how many solar panels you’ll need based on your situation.

What is the price of a 20kw off-grid solar system?

The average cost of solar in the United States is $2.77 per watt as of January 2022, which works out to around $55,400 for a 20 kW installation. After the federal solar tax credit deduction, the total cost of a 20 kW solar system would be $40,996. (not factoring in any additional state rebates or incentives).

Is it worthwhile to invest in an off-grid solar system?

One of the best HVAC contractors in the state, GO Green Air, lists the benefits of moving off the grid as well as some of the changes you’ll have to make.

Solar panels and storage systems have become less expensive over time. Some people may be put off by the initial investment fees, but the long-term benefits make it a financially reasonable decision; in most states, an off-grid homeowner can save around $20,000 over the course of 20 years.

In as little as 3-5 years, you can return your solar panel investment. The investment in the battery systems that will be utilized to store solar energy, on the other hand, will take longer to recuperate; battery system payback periods typically last ten years.

If you decide to sell your property, an off-grid electricity system will appeal to a variety of buyers. On the one hand, eco-conscious purchasers will be attracted to a home with a low carbon impact, while more traditional buyers will be wary of living off the grid.

Going off-grid means you’re in charge of your own power system maintenance. Solar panels, on the other hand, require very little upkeep. However, repairing an off-grid system is more difficult than repairing your HVAC system. You can easily call HVAC repair contractors for HVAC systems, but you’ll need more specialist expertise for off-grid systems.

Fortunately, as solar energy’s popularity grows, more energy solution companies are offering solar energy power system services.

GO Green Air is a Tesla and Powerwall certified installer who also provides smart HVAC system installation. For solar panel consultations, call (925) 62-SOLAR, and for HVAC system consultations, call (925) 28-GREEN, or fill out this form. Concord, CA residents are served by us.

What is the price of a 10kW off-grid solar system?

Based on the typical cost of solar in the United States in January 2022, a 10kW solar energy system will cost around $30,000 before subsidies. When you factor in the federal tax credit, the price reduces to around $22,200.

It’s crucial to remember that the cost of a solar system varies by state. Additional state or utility-based solar rebates may lower the installation cost even more in some places.

The table below shows the average cost of a 10kW solar system in several states so you can get a sense of how much solar would cost in your location.

What is the price of a 100 amp solar system?

Solar panels with a capacity of 100 watts are designed to be portable and are frequently combined with a battery. A 100-watt panel will set you back under $100, while a full 100-watt kit will set you back around $150. Depending on where you reside, a 100-watt solar panel will produce between 280 and 450 watts per day on average.


The cost of purchasing a solar system is relatively expensive at first. Solar panels, inverters, batteries, wiring, and installation are all included in this cost. Nonetheless, because solar technology is continually improving, it’s realistic to predict that prices will continue to fall in the future.


Although solar energy can be collected during overcast and rainy days, the solar system’s efficiency is reduced. Solar panels must be exposed to sunlight in order to collect solar energy. As a result, a couple of overcast, rainy days can have a significant impact on the energy system. It’s also important to remember that solar energy cannot be collected at night.

Thermodynamic panels, on the other hand, are an option to consider if you need your water heating solution to work at night or during the winter.

Check out our video for a breakdown of how effective solar panels are in the winter:

How many batteries are required to power an off-grid home?

Given that the average solar battery has a capacity of around 10 kilowatt-hours (kWh),

  • You’ll need enough battery storage to cover your energy demand when your solar panels aren’t producing roughly 2-3 batteries if you want to save the maximum money possible.
  • When the grid goes down, you usually just need one solar battery to keep the lights on.
  • If you want to be entirely off the grid, you’ll need a lot more storage capacity, like 8-12 batteries.

Is it possible to run a house solely on solar energy?

You can definitely run a whole house entirely on solar power with a contemporary solar energy system that includes power storage. With today’s high-efficiency solar panels and solar batteries, powering a full home solely with solar energy is now more affordable than ever.

Since the widespread use of solar energy for domestic and commercial purposes two decades ago, the cost of solar panel systems and installation has continued to fall. This is despite the fact that local and federal government rebates and tax credits, as well as utility company incentives, are all declining year after year. The significant reduction in solar costs is due in part to the widespread adoption of solar energy on a national and global scale, and in part to quick developments in solar energy system technology.

Start with these fundamental analyses to determine the cost-effectiveness and other viability elements of maintaining a totally solar-powered home:

Calculate how much electricity you use per month.

To begin, calculate how much solar energy you’ll need to power your complete home entirely using solar energy. You’ll need to know how much electricity you use on a monthly basis to do so. This will allow your solar contractor to estimate how much energy your panels will need to generate each month to power your entire home.

Of course, monthly usage and solar power production potential are projected to fluctuate throughout the year. The reserve capacity of today’s state-of-the-art domestic solar battery storage is the solution to maintaining a consistent power supply for your home. Your solar batteries allow you to store the excess electricity generated by your solar panels on longer, sunnier days for use at a later time when the weather is less sunny.

Solar batteries ensure you have enough electricity to run your complete home during periods of less direct, bright sunlight, without the system automatically drawing from the public power grid.

Evaluate your climate region’s solar energy production capacity.

Whether you can expect to generate enough solar energy to power your entire house year-round depends entirely on the environment you reside in. Examine whether the climate in your area has the ability to produce enough solar energy to power your entire home on a continual basis.

Running a house fully on solar throughout the winter months may be more difficult for homeowners in colder, cloudier climates, such as those along the northwest Pacific coast. Residents may go weeks without seeing direct sunlight, while residents in the southwest may go weeks without seeing a gloomy day.

These climatic changes, combined with circumstances unique to your home and lifestyle, can mean the difference between being able to operate fully off the grid or continuing to rely on your utility company for at least some electricity.

Assess your solar production environment based on your home’s surroundings.

Consider the number and location of huge trees growing around and near your property, as well as the heights of nearby houses and other structures. Large trees and tall homes that are close enough to your home to create heavy shade across your roof for more than a third of the bright hours might impair the efficiency of your solar energy system significantly.

For a residence of 2000 square feet, how many solar panels do I need?

People frequently inquire about the number of solar panels they will require dependent on the size of their property. However, for solar electric system design, the amount of electricity you use is more significant than the size of your home. This is primarily due to the wide range of ways in which people consume power.

Let’s imagine two family dwell in 2,000 square foot houses next door to each other. A young man and his fiance live in Home A; they both work long hours and frequently socialize with friends in the evenings. As a result, they use very little electricity and only pay around $40 each month.

Two parents and their two teenage children live in Home B. They are either using power to filter their pool or operating the heater or air conditioner, while the teenagers are always on their iPads, opening the refrigerator, or watching TV. Because there are more people living in the residence and their lifestyle necessitates more energy, their monthly electricity expenses are around $325.

Despite the fact that they live in identical homes, the family in Home B would most likely need to invest in more solar panels to reduce their electricity consumption than the couple in Home A.

Even if the residences consumed the same amount of electricity, one may have better solar exposure or less shade than the other, resulting in more or less panels.

The quantity of energy you use now is also significant because most utility companies in Los Angeles and Orange County limit the size of your solar system based on how much energy you use now. This figure is usually calculated by looking at how much electricity you used in the previous year.

There are, of course, certain exceptions to the rule. If you’ve just been in your home for a few months or want to put solar panels on a property that’s still being built, most utility companies will let us estimate your usage based on the square footage of your home.

The Los Angeles Department of Water and Power, for example, calculates this type of average as 2 watts per square foot. A 4,000-watt solar array would be authorized for a 2,000-square-foot residence. A system of this size could range from 12 to 18 solar panels, depending on the type of panel you choose. Keep in mind that the formula for estimating usage differs based on your electrical provider.

Another exception is sometimes allowed for persons who anticipate an increase in their electricity consumption. We can estimate the additional demand and put it into the solar panel design and cost if you plan to buy an EV (electric car) or install central air, for example. The utilities, on the other hand, are finicky! They’ll require proof of purchase in addition to the solar system application.

For a 10kW system, how many solar panels do I need?

Another popular choice among our residential and commercial customers is the 10kW Solar System. On a daily basis, the 10kW Solar system can extract an average of 37kWh of energy from the sun (see below table 10kW SYSTEM OUTPUT IN MAJOR CITIES). A 10kW Solar System typically includes 27 to 33 panels (depending on the wattage of the Solar panels available; for example, to reach 10kW, you only need 27 of the 370w Solar panels) and a 10kW Inverter. The total solution would contain 27 to 33 CEC Approved Solar Panels, a 10kW CEC Approved inverter (Three Phase), Roof Mounting, and an Australian-approved electrical kit.