Which Solar Panels Should You Choose?

It might surprise you to know that solar panels come in several different types, and that each of them has benefits and drawbacks. The solar panels that you choose will make a difference in the cost, size and efficiency of the solar PV system you install. Here’s a quick overview to help you understand the differences between the different kinds of solar panels so that you can make a decision about which one is best for your home.

First, the basics. Most solar panels are made from silicon, a naturally occurring crystal that has energy conversion capabilities. The first solar cells were created in 1954, and in the 50 plus years since, there have been many advances that reduced the cost of manufacturing solar cells. Some of those advances also reduced or improved the efficiency of the solar panels made using them.

Monocrystalline Solar Panels

Monocrystalline solar panels are made from thin slices of single silicon crystals. They are both the most expensive and the most efficient type of solar panels currently available for most residential uses. Because monocrystalline solar panels are so efficient, however, you can get more power from smaller arrays of solar cells. Depending on your circumstances, that can translate to lower costs. It also translates to less weight on your roof, which could be a factor in your decision with an older home.

Polycrystalline Solar Panels

Polycrystalline solar cells are cut from silicon ingots made by melting and molding silicon, then slicing it into thin wafers. Polycrystalline cells are less expensive, but less efficient, which means that you’ll need a larger solar system to produce the same amount of energy that a smaller monocrystalline solar PV system can produce. The loss of efficiency is often a fair tradeoff for the reduction in cost, and polycrystalline solar panels are the most common type sold in  the UK.

Amorphous Solar Cells

Also known as thin film solar, amorphous solar panels use a thin film of silicon sandwiched between two layers of glass. In general, they have the potential to be highly efficient and lower the cost of producing solar energy, but they have yet to live up to that potential. Currently, amorphous solar panels are rare in the residential market. They’re heavier than either poly or mono crystalline solar panels, and less efficient than both.

When you talk to a solar installation company about installing solar panels on your roof or other outdoor area, be sure to ask them what type of solar panels they use, and ask which is the best type of solar PV system for your residence.