comparing the price of solar panel systems

Why is my solar panel system more expensive than my neighbors?

It probably doesn’t surprise you to learn that the cost of solar varies by state, but what other factors make a solar panel system more or less expensive? If you’re comparing quotes with your neighbors and notice a big difference in cost, it’s probably due to one of five main factors:

System size

Takeaway: larger solar panel systems are typically more expensive, but have a lower $/watt thanks to the economies of scale.

When an installer designs a solar panel system, they typically propose a system that’s large enough to generate all of your electricity needs because that’s how you’ll save the most money. But everyone’s electricity needs are different, as are their rooftops; if your proposed solar panel system is larger than what your neighbor installed, it’ll likely cost more money. Importantly, that doesn’t necessarily mean more solar panels: system size is all about the capacity to produce electricity, determined by a system’s kilowatts (kW). 

While you may be paying more overall for a larger system, you may notice that the larger the system, the lower the cost per watt ($/W). Why? When it comes to paying for solar, there are certain fixed costs you need to pay like permitting or interconnection fees. As your solar panel system becomes larger and larger, those fixed costs represent a much smaller fraction of the overall cost, leading to an overall lower $/Watt.


Takeaway: higher-quality equipment is more expensive to install, but in some cases, the added cost can mean more savings over time.

Like other electric appliances, there’s a variety of quality with solar equipment. Higher efficiency, higher wattage panels are typically more expensive than panels with lower efficiencies and wattages. If you’re installing premium equipment, you’ll likely have to pay more upfront for it.

However, there are many instances where that added cost is well worth it. For example, if you don’t have a ton of space of an installation, installing higher-efficiency equipment can help maximize the electricity production of your solar panel system (and, therefore, your electricity bill savings over time). Higher efficiency equipment can also be worth it if you’re considering buying an electric vehicle or some other electricity-hungry appliances in the future and want to leave space available to expand your solar panel system down the line.

You can read more about whether high-efficiency equipment is worth the added cost in this article.

Type of installation

Takeaway: installations that require additional components (ground mounts, carports, etc.) are often more expensive than a rooftop solar panel system.

Alternative installation types–ground mounts, carports, etc–are becoming increasingly popular. While there are certain advantages to these types of installations, they often cost more than traditional rooftop solar due to additional components, complicated wiring, or added labor required to complete the installation. Don’t be too surprised if your ground mount system ends up costing more money than your neighbor’s rooftop installation.

Difficulty of the installation

Takeaway: if you have a complicated roof structure, or plan on installing solar arrays on multiple roof planes, you may have to pay more for labor.

If your roof has multiple levels, an unusual angle, obstructions like dormers or vents, or is made up of a more complex roofing material like slate or cedar, installing your system may require more time to handle these added complications. Installers will charge extra for this, and the additional effort will end up increasing your overall cost. 

Installation company

Takeaway: some installation companies charge more for their services than others because of their overhead costs. Ultimately, you want to make sure you choose a reputable installation company that you trust.

It certainly won’t surprise you to hear that solar installers, like other types of contractors, charge differently for their services. If you notice a big price difference between what you and your neighbor are being charged for solar and it’s not because of any of the factors listed above, it’s likely because of the installation company and what they charge for labor. That doesn’t mean the added cost isn’t worth it: cheaper doesn’t mean better and, ultimately, you want to move forward with a reputable installer that you feel comfortable with. 

Take a look at this article to learn about the other factors to consider when choosing an installer.

Compare solar pricing on EnergySage

If you’re comparing price notes with your neighbor, it’s likely because you want to ensure you pay a fair price to go solar. However, solar pricing can be very dependent on property specifics and your own preferences or needs, so in addition to comparing pricing with a neighbor, we recommend obtaining multiple quotes for your own property to compare. When you sign up on the EnergySage Marketplace, you can receive up to seven custom quotes to compare side-by-side in a standardized format. Evaluating pricing, equipment, and financing from different local installers will allow you to go solar with confidence.