Staying in a cabin is the ideal way to disconnect from the outside world. Solar electricity can be a fantastic method to provide you electricity, no matter where your cabin is located.  Solar installations can vary in size from huge, permanent installations to small, portable kits.

In this article, we provide all the information you require to power your cabin along with the steps to show you how to design solar panels for your cabin.

Steps in Designing an Off-Grid Solar Panels for Cabins

An off-grid system’s design and installation are not difficult, but they do involve a set of actions that are relatively fixed and have a significant level of complexity.

1. Load Calculation and System Sizing

Before installing any components, you must first determine the specs and required quantity of each component based on the amount of energy and continuous power you will be consuming.

First things first, you should make a list of every electrical appliance you own, together with how much electricity it uses and how long it runs for. Here’s an example:

You may want to store all 3000 Wh, or just a portion of it, in a battery depending on how much energy you use in the light and dark. We are assuming you will keep everything in the batteries, thus a 3kWh or larger battery bank is required.

The location will determine the size of the solar panel. While some regions average up to five hours of direct sunlight, others only get roughly three.

Assume for the moment that you live in an area where the average daily sunshine hours are four. Thus, 3000 Wh / 4 h = 750 W of solar panel capacity will be required.

You can get a rough idea of the size of the solar panels and the battery needed with these simple calculations.

2. Installing the Batteries

After you have all the specifications, start buying and installing the batteries.

The majority of batteries on the market are 12V by default. You may need to connect the batteries in series or parallel with your system depending on if it requires a different voltage. The inverter’s input voltage determines this.

3. Connecting the Charge Controller

A charge controller maximizes battery charging and raises system efficiency. An MPPT charge controller is preferred over a PWM one because of its superior efficiency.

Based on the voltage of your system (inverter), you can select the appropriate controller from the 12V or 24V ratings available.

On the other hand, we increase the amount of current coming from the solar panels by a small safety margin for the current rating. The current rating for the controller can be determined using the following straightforward formula, which assumes a 30% safety margin:

Charge controller current rating = solar panel current rating x 1.3

4. Installing the Inverter

To convert the electricity from the solar panels or batteries into a form that can be used, an inverter is required (AC). If you are designing a totally DC arrangement that runs just DC loads, you can avoid using an inverter, but that will severely limit the loads that you can run on your system.

The voltage rating of an inverter is predetermined; smaller models often have a value of 12V or 24V. Make sure the solar panels, charge controller, and batteries are all set up according to this rating when you set up the entire system. 

5. Installing Your Solar Panels

The next stage is selecting and installing the appropriate solar panels depending on the voltage rating, taking into account the load calculation, chosen batteries, controller, and inverter.

The panels should be installed with their faces as close to the sun as possible. Installing them toward the south is therefore ideal (or north if you live in the southern hemisphere). Installing the panel in an area free of shadows is another important consideration. At all times of the day, ensure that there are no shadows cast by surrounding structures or trees.

6. Connect Everything

Now it’s time to connect everything. Use a dark cloth to shield the solar panels from an unexpected incoming current that could harm your other components when you eventually connect them to the controller.

How We Can Simplify the Design and Implementation of Your Cabin’s Solar Panel System?

Don’t want to do everything by yourself? Don’t worry! At Ecuip Engineering, we understand that designing and implementing a solar panel system for your cabin can feel like a daunting task. That’s why we’re here to guide you every step of the way.

1. Contact Us for a Consultation

Reach out to us at Ecuip Engineering to schedule a consultation regarding your cabin’s solar panel needs. You can easily contact us through our website by filling out the form.

2. Discuss Energy Requirements with Our Experts

During the consultation, let’s discuss your cabin’s energy requirements. Give us the details about the appliances and devices you wish to power, including their power ratings and usage patterns. Our knowledgeable team will guide you through the assessment process to determine your energy needs accurately.

3. Utilize Our Solar Potential Insights

Benefit from our expertise in assessing the solar potential of your cabin’s location. Share information about your cabin’s geographical coordinates, climate, shading, and orientation. We’ll leverage this information to provide insights into the average daily sunlight hours and solar irradiance at your location.

4. Receive Recommendations for High-Quality Solar Panels

Collaborate with us to select the most suitable solar panels for your cabin. We’ll provide recommendations based on our expertise, prioritizing efficiency, durability, and compatibility with off-grid setups. 

5. Work with Us to Size the Solar Panel Array

Let’s work closely together to determine the optimal size of the solar panel array for your cabin. Our experts will calculate the array size based on your energy needs, solar potential, and other relevant factors. We’ll ensure that the array is appropriately sized to meet your electricity demand while accounting for variations in weather conditions.

6. Collaborate on Designing the Mounting System

Partner with us to design a robust mounting system for your solar panels. We’ll ensure that the mounting system is precisely designed to securely attach the panels to your cabin’s roof or ground. We’ll optimize the system for maximum sunlight exposure and structural integrity, taking meticulous care of every detail.

7. Installation through Ecuip Energy

Once the solar panel system is designed, our sister company, Ecuip Energy, can handle the installation process. Their experienced technicians will ensure that your solar panels are installed safely and efficiently, ready to power your cabin with clean, renewable energy.

3 Tips for Solar Panels for Your Cabin

Here are some tips for you to help you out:

1. To reduce the overall energy demand of your cabin, invest in energy-efficient appliances and devices. Look for products with high Energy Star ratings to minimize energy consumption and maximize the effectiveness of your solar panel system.

2. If your cabin is located in a temporary or remote setting, consider using portable solar panels that can be easily transported and set up as needed. 

3. Enhance the efficiency of your solar panel system by strategically placing reflective surfaces, such as white or light-colored materials, near your panels. 

Frequently Asked Questions

How many watts do I need for a small cabin?

If you live alone or with a spouse and use basic items like LED lights, a laptop, a phone charger, and a small refrigerator, you probably need 1,000 to 1,500 watts

How do I know how many solar panels I need for my cabin?

The number of solar panels you need depends on your cabin’s energy usage and the amount of sunlight it receives. To calculate this, you’ll need to estimate your daily energy consumption and consider factors like the size and efficiency of the panels.

Do I need batteries with my solar panel system for my cabin?

Including batteries in your solar panel system allows you to store excess energy generated during the day for use during periods of low sunlight or at night. This is particularly important for cabins that are off-grid or have limited access to electricity. 


Designing solar panels for cabins is like putting together a puzzle. You need to think about how much energy you use, how much sunlight your cabin gets, and what kind of solar panels and equipment will work best. By looking at all these things and following some smart tips for designing and installing solar panels, you can make sure your cabin has electricity whenever you need it.

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