NRDC: Solar Electric Guide for Your Stadium or Arena (PDF)
It is important to understand that these numbers reflect only the size of the solar panels themselves and do not incorporate the required racking structures or any spacing between them.
The 4 MW system is not only the largest solar power project in Philadelphia, but also the largest one in the NFL. The system covers about one-third of the stadium's energy needs annually, which is more than enough to power the team's home games for a year.
You'll see the size of a solar panel described by how many cells it has. 60-cell panels are usually laid out in a 6 by 10 grid and are the most popular option for home solar installations. You'll typically find that 60-cell solar panels have output ratings between 350 and 400 watts and efficiency ratings between 17% and 19%.
The easiest way for homeowners to figure out the best solar panel size for their needs is to work with a dedicated solar installer. Solar installers will size your system based on your energy needs, coupled with your available roof space and the sunlight in your area.
Those squares are called solar cells, and they're the part of the panels that turn sunlight into electricity. You'll see the size of a solar panel described by how many cells it has. 60-cell panels are usually laid out in a 6 by 10 grid and are the most popular option for home solar installations.
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