1kw Solar Panel (Ultimate Guide to a 1kw Solar System)

The thought of including a 1kw solar panel in your solar array must have crossed your mind more than once this year (we know it has for us).

By now, you already know how much value is added to your household and the planet by installing solar panels.

To our knowledge, single 1000-watt solar panels do not exist yet.

However, this article aims to teach you how to build your own 1kw solar system using top-quality monocrystalline solar panels from companies such as Renogy and Eco-Worthy.

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1kw Solar Panel Overview

As we’ve already mentioned, individual 1000-watt solar panels do not exist, at least not yet in 2022.

Instead, when you see someone referring to a 1kw solar panel, they are in fact referring to a 1kw solar system. Whereby the system is made up of an array of solar panels equaling 1000 watts.

For example, by connecting 10x 100-watt solar panels in series, you’d essentially end up with a 1kw solar array.

It’s important you keep this fact in mind, as 10 x 100-watt solar panels can take up quite a bit of space depending on the brand/solar panel type you use.


1kw Solar Panel Price

The average price for a 1kw solar panel array is between $700 to $1200 (just for the solar panels).

Below, we’ve created a table that you can use to judge the different types of 1kw solar setups and their pricing that we also expressed in $/W for better comparison.

Please note the pricing used in this table comes from Renogy and assumes you’ll only be using monocrystalline solar panels.

(Pricing of 1kw solar panels include tax)

Solar Panel WattageAmount of Solar PanelsTotal WattageSize of Each PanelTotal area for 1kw solar panelPrice RenogyPrice/Watt
50 Wattsx 201kw 558 x 508 x 25 mm 5.67 sqm$1,499.98$1.49
100 Watts x 101kw1044 x 508 x 35 mm5.3 sqm$999$0.99
200 Wattsx 51kw1650 x 670 x 35 mm5.53 sqm$1399.95$1.39
320 Wattsx 41,2kw1666 x 1002 x 35 mm5.2 sqm$1299.99$1.01
450 Watts x 20.9kw1909 x 1134 x 35 mm4.81 sqm$899.99$0.99
550 Wattsx 21.1kw2279 x 1134 x 35 mm4.7 sqm$1,099.99$0.99
https://www.renogy.com/200-watt-12-volt-monocrystalline-solar-panel/


1kw Solar Panel Size

So as we’ve already mentioned, a singular 1kw solar panel does not exist. With current solar technology that would be one humungous solar panel!

Indeed, as of May 2022, the most powerful single solar panel available is 670W from TrinaSolar. Due to its large size, it is mostly dedicated to utility & commercial solar PV production.

To understand the size of a 1kw solar system, you will have to look at the joined sizes of all your solar panels put together.

In the price table above, I have included the individual size of each solar panel type as well as the total area covered for a 1kW solar system.

Let’s use the most popular solar panel wattage, the 100-watt solar panel from Renogy. Each 100-watt solar panel has the following dimensions: 1044 x 508 x 35 mm (41 x 20 x 1.4 inches).

Let’s assume you will create two rows of solar panels on top of your roof. That would mean 5 solar panels per row (to equal the 1kw or 1000-watt with 10x 100-watt solar panels).

Positioning the solar panels vertically on your roof would mean your total height (with two rows of solar panels) will be 2088 mm and your total width (with 5 solar panels next to one another) would be 2540 mm.

This means the total size of a 1kw solar panel setup would be 5,3M2.

With more powerful solar panels, you need less space to reach 1kW of solar power. For example, it only takes 4.7sqm with 550W solar panels to reach 1kw, whereas with the 50W solar panel it will take 5.67sqm.

Therefore, if you want to optimize your space either on the roof of your house or your RV, go for more powerful solar panels.  You will be able to produce more electricity in a smaller space and often at a lower cost.


How Many Solar Panels Are Required For 1kW?

At first, this may seem like a super easy calculation – 1000-watts equals 1kw. Therefore, if you have four 250 watt solar panels and connect them in series, you’ll end up with 1000 watts, or 1kw.

However, you must remember that solar panels lose wattage as the temperature increases.

This is usually represented as a percentage loss per degree Celsius (you’ll always find this information on the product packaging/user manual or if buying online in the specifications section of the product).

For example, the Renogy 100W solar panel has a power loss of -0.37%/ºC and the surface of the solar panel can reach 65°C which translates in up to 8% power loss.

Therefore, we recommend to slightly oversize your system to compensate the power loss at higher temperature.


Is 1kw Enough To Run A House?

This question is relative and all depends on your home’s energy consumption and the amount of sunlight received at your location.

For example, if you are located in California (one of the sunniest states), 1kW solar panel will produce 4.9kwh/day and if you are located in the state of New York, 1kw solar panel will only produce 3.5kWh/day.

However, the average American home consumes 877 kWh a month which adds up to 29 kWh a day. Therefore, a 1kw solar panel system is not enough to power your average American household.

Also, bear in mind that not every single day will be sunny, there may be rain forecasted for the week, or it may be extremely overcast.

All things considered, if you consume the same amount of energy as the average American, you’ll need a bigger solar array like this one, to provide your home with enough electricity.

To power a house with solar panels, in California you will need 6kW solar panels, in the state of New York, more than 8kW.

kWh is the common unit used to measure a household’s energy consumption.

Here is the formula to convert kWh to kw:

The power P in kilowatts (kW) is equal to the energy E in kilowatt-hours (kWh), divided by the consumption time period t in hours (h):

P(kW) = E(kWh) / t(h)


What Can Be Run On A 1kW Solar Panel?

Here’s a quick infographic to give you a rough idea of what a 1kw solar panel array would be able to power.

what can be run on a 1kw solar panel

At first, this seems amazing, and it is, but there are some practical points for you to consider.

For example, a 1kw solar panel system will produce 1kw of electricity for a few hours a day, and only when it’s a clear sunny day.

Below is a chart showcasing the electricity output of a 1kW solar panel system over a summer’s day. You can see that 1kW is only generated at 12 pm when the sun is at its strongest:

1kw solar panel system

If you plan to go completely off-grid and rely entirely on your own source of electricity, I’d recommend investing in a larger solar kit setup, such as a 3 – 5 kW solar panel kit.


Best 1kw Solar Panels

Below, we will mention the best solar panels/brands to create your own 1kw solar panel system. We will only be recommending singular solar panels, you will need to multiply your order to build a 1kw solar system.

Best 100W solar panel for a 1kW solar panel

RENOGY

Renogy is a leading brand in solar equipment. Their solar panels are made of the highest quality material and integrate the latest innovation. The last RENOGY 100W solar panel is extremely compact so you can produce more power in a smaller space for the next 25 years. All of that at a competitive price, below 1USD/W.

You will need 10 modules of 100W for a 1Kw solar panel.

Best 200W solar panel for a 1kW solar panel

WEIZE

WEIZE solar panel is constructed with high-performance monocrystalline solar cells that offer higher efficiency (up to 21%), embedded in a strong aluminum frame. It comes with a 25-year power warranty.

The company only produce small power solar panels only (up to 100W), and currently offer a great bundle of 2*100W solar panels. Already a best seller on Amazon!

For a 1kW solar panel you will need 5 bundles of Weize solar panels.

Best 250W solar panel for a 1kW solar panel

SHARP

Sharp is well known for their consumer electronic products, but they are also the pioneers of solar electricity, with 50 years of creation and innovation. The 250W solar panel is one of their best entry models. It features a unique sleek black frame module that will enhance the beauty of your house. Sharp also makes sure that their module has a 5% positive-only power tolerance. More power for the same price!

You will need 4 modules of 250W for a 1Kw solar panel.

Best 400W solar panel for a 1kW solar panel

Canadian Solar

Canadian Solar is on the rise! Since 2001, they keep on improving their solar panels thanks to strong R&D. They now come out as one of the best brands in the world by being n°1 for performance/price ratio. Their 400W solar panel is not only very efficient thanks to the PERC technology but also aesthetically pleasing with a total black appearance.

You will need 3 modules of 400W for a 1Kw solar panel.

Best 500W solar panel for a 1kW solar panel

Trina Solar

Trina Solar was one of the first manufacturers to introduce the large 500W solar panel in 2020 by combining the triple cut cells to save space and the MBB (multi bus-bar) technology to absorb more light. This was a breakthrough as it allows to produce more electricity in a smaller space (compared to 5 * 100W solar panels). However, be sure you can accommodate this 2 meters long panel (more than 7 feet)!

You will need 2 modules of 500W for a 1Kw solar panel.


Romain Metaye, PhD

Romain Metaye, PhD

Dr Metaye has a Ph.D. in chemistry from Ecole Polytechnique, France. He is a renewable energy expert with more than 11 years of experience within the research world. During his career, he supervised more than 150 projects on clean energy. Off-grid smart systems, solar energy, battery and the hydrogen economy are among his specialties.

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  1. I want to build my own photo voltaire system that will run a full-size refrigerator, a freezer, a 1/4 HP motor, and a dozen led lights. I want the entire system (panels, controller, and inverter to be reasonably portable, and highly efficient for their size. I also want the system to run off of Lithium iron phosphate batteries (probably 200A).
    Can you direct me to suppliers?

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