What's the difference between a 60-cell and 72-cell solar panel?

Popular for commercial and ground-mounted installations, 72-cell solar panels tend to cost less per watt and may reduce installation time by requiring fewer modules than 60-cell modules. 72-cell solar panels appear similar to 60-cell solar panels yet feature an extra 2 rows of solar cells added to the length of the module. This lowers overall module production cost per watt, passing savings on to the end-user. A 72-cell solar panel will typically have a higher voltage, weigh more and of course have a longer length than their 60-cell counterparts.

These solar panels are available with monocrystalline and multicrystalline technologies. Monocrystalline solar PV arrays are desirable by those requiring as much solar power harvest possible for a limited area. Modern multicrystalline technologies are very efficient, approaching those of monocrystalline, at a lower price per watt on average. 72-cell solar panel system arrays composed of multicrystalline (also known as polycrystalline) solar panels may require more installation area than an equivalent mono solar panel system.