How Big is a Solar Panel? Discussing Key Factors

You may be wondering about a few different areas when considering solar panel installation for your home or building, and size is often among them. How big is a solar panel, and how many solar panels will you need for your setup?

At Intermountain Wind & Solar, we're proud to offer an extensive range of solar panel installation and other solar power services for clients across Salt Lake City, Utah and Boise, Idaho, including both residential and commercial solar power services. Here are some basics on standard dimensions for solar panels in both these settings, plus some related information like common panel weight, total panel needs for your setup and more.

Cell Configurations

Before we even get into specific size information on solar panels, it's important to know the underlying factor that often determines the answer: Cell configuration. Most modern solar panels are built to either 60 or 72 cells, though there are some smaller exceptions. While cells can vary somewhat in their size, they tend to be relatively uniform, and this will usually be the key factor to evaluate.

Residential Solar Panel Size

Generally speaking, residential solar panels will be just over five feet long and just over three feet wide. Their most common specific dimensions are 66x40 inches, though this can vary slightly between manufacturers - panels from different sources may be an inch or two shorter or longer in width or height.

In addition, residential solar panels are typically around 1.5 inches thick. This can also depend on a few other factors, including the specific materials used in construction and even the overall panel efficiency - thinner panels tend to be more efficient, and vice versa.

Commercial Solar Panel Size

For commercial solar setups, panels will typically be larger than their residential counterparts. Common dimensions here are 78x39 inches or 75x39 inches, again with some variation possible between manufacturers and specific models. As with residential panels, thickness can vary but is usually around 1.5 inches.

Weight Considerations

With some minor variation, the average weight for a solar panel is between 40-50 pounds. This means that one or even a few panels won't be too difficult to handle, but larger installations with multiple panels can get heavy quickly.

Determining Solar Panel Needs

When it comes to calculating how many solar panels you'll need for your home or building, there are several factors at play:

• Roof or other mounting setup: While the roof is by far the most common location for solar panels, some setups may require ground or pole-mounting options. If you have multiple options, be sure to consider the amount of available space and sunlight in each location when determining panel needs.
• Energy consumption: The amount of energy your home or building uses will play a significant role in how many panels you need. If possible, try to make energy-saving improvements before installing solar to reduce your overall needs.
• Panel efficiency: As mentioned above, thinner panels tend to be more efficient - this means they can generate more power per square foot than thicker panels. Keep this in mind when considering total panel needs for your setup.
• Roof or mounting area size: Depending on the size and layout of your roof or mounting area, you may be limited in how many panels you can fit. Be sure to measure carefully and consider any obstructions that may impact panel placement.

Overall, determining solar panel needs is a complex process that should involve consultation with a professional solar installer to ensure accuracy.

Ensuring Roof Weight Capabilities

Depending on the size of your solar panel installation, it's crucial to ensure that your roof can support the added weight. A professional solar installer will be able to assess your roof's structural integrity and make any necessary reinforcements before installing panels.

In some cases, a roof may not be able to support the weight of solar panels at all. In these situations, alternative mounting options such as ground or pole-mounting may need to be considered.

While there is no one standard size for solar panels, both residential and commercial options tend to fall within certain dimensions. It's essential to carefully consider factors like panel size, weight, and overall needs before determining how many panels you'll need for your setup. Additionally, working with a professional solar installer can ensure accuracy and safety throughout the installation process.

At Intermountain Wind & Solar, we have a team of experienced professionals who can guide you through the entire process, from determining your solar needs to installation and maintenance. Contact us today to learn more about our services and how we can help you harness the power of the sun for your home or business, whether you're in SLC, Utah or Boise, Idaho.