Not All Panels Are Created Equal.

Many of our customers ask what the difference is between Poly-Crystalline solar panels and Mono-Crystalline solar panels.

Solar panels generally come in two different sizes: 72 cell panels and 60 cell panels. 72 cell panels are generally used for commercial purposes, and are larger and more awkward to carry or lift onto a residential roof. 60 cell panels are primarily used for residential purposes. The solar cell (each panel has 60 of them) is the workhorse of any solar panel. It’s the part of the panel that pulls electricity from the sunlight. The other parts of the panel provide durability, protection and structure to the panel.

Although every solar panel has solar cells, the quality and type of cell determines the efficiency of a given panel. In other words, not all panels are created equal.

There are 2 common types of solar cells: Poly-Crystalline and Mono-Crystalline.



The easiest way to explain Poly-Crystalline is to think of growing sugar crystals in a jar. If you were to grow sugar crystals in a jar until the jar was completely full, you would have sugar crystals that are pushed against each other until the jar is a solid mass. If you were to slice that mass into thin wafer-like slices what would you get?

Each slice would have a random geometrical pattern that represents smaller crystals pushing against larger ones to fill a given space. The random pattern of crystals in a Poly-Crystalline cell ends up hurting the efficiency of the panel by preventing a smooth consistent path for electrons to move through the crystal (semiconductor) and into panel’s wiring (conductor).

However, Poly-Crystalline cells require a lesser grade silicon making them slightly cheaper but also less efficient. Although most people would prefer the more efficient options, sometimes it may make sense to use a cheaper less efficient panel, provided efficiency isn’t a priority to you and you have adequate roof space for additional panels.

Poly-Crystalline Cells


Our favorite type of panel to install is Mono-crystalline.

Mono-cells are made with a high purity silicon making them up to 4% more efficient than it’s poly-crystalline competitor.  They also have a better heat rating, adding to the efficiency and durability of the panel.  This is what allows them to take up less space on your roof while producing enough power for your needs.

Mono-Crystal Before Shaping and Slicing

Mono-crystalline cells are solid silicon. Accordingly, they do not have the same geometrical patterns as their Poly-crystalline counter-part. We describe the process in which the crystal is made in an earlier post. They are more attractive, less reflective and the increased efficiency allows a larger and quicker return on investment, when comparing the two cell-types on a long-term basis.

Our partner, SolarWorld has manufactured their panels in the USA for over 30 years. With their main factory in Oregon, they provide the best warranty’s in the industry in an American Made Product. SolarWorld stands by their product as the best Value and Quality you can find in the world. Quite frankly, we agree.

Watch the Following Clip For More About SolarWorld Panels:


Although we have a wonderful partnership with SolarWorld, we understand that just as Poly-crystalline panels are not for everyone, SolarWorld may not be the best option for all customers. Accordingly, SolarWorks does not limit their customers to one panel, one product, one system, one brand.

We are partners with our customers too. And as we provide problem solving and consulting services to our customers, they are ultimately the ones making the decision about which panel to buy, the size of their system, the brand, the location on their roof and the time they are ready to install the solar energy system. Our customers love us because they get choices, and we can advise them accordingly.

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The ultimate goal for SolarWorks is to work with our customers to see if switching to solar is right for them. And if it is right, we want to ensure that each customer receives the best quality and value found here in Utah. We believe in energy independence. And having a system that is not right for your house, will not provide you with energy independence. With our proprietary system design and engineering, we are confident when we tell you what kind of production to expect from your system (after taking into account GPS coordinates, pitch and azimuth of your roof, shade issues and the specifications and size of the solar energy system designed for your house.) And, with our proprietary ROI analysis we are confident when we tell you what kind of monthly payments you can expect, when to expect your break-even point, and what kind of return on investment you can expect over the 25 year life of your solar power generation system.

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