I’ve heard that not all homes can be outfitted for PV because roof shapes are sometimes incompatible. What can I do to make my roof work?
“Everybody can have some PV,” says Mike Benes of Hawaiian Island Solar. But the installation is easier if the roof’s surface area is larger. Traditional PV works with a central inverter. This inverter works by combining all the panels’ energy to create electricity. Essentially, the central inverter treats all panels as if they were one big panel. Because of this, “All the panels connected to the same inverter should be facing the same direction,” says Bruce Okimoto of Hawaii Home Expo. “You wouldn’t be able to use the same inverter for panels that are on two sides of the roof.” But what if you don’t have a large plane on your roof for multiple panels? Ask about a micro inverter. Micro inverters work with separate converters on each panel. Thus, “If people have panels going in different directions, it doesn’t matter. In either case, it’s possible to install PV,” Benes says.
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