Penetrations don’t have to be the enemy of flat-roof solar

By Kelly Pickerel Holes in commercial rooftops are often considered the enemy of solar installations. Building owners don’t want them; installers don’t want to make them. So fully ballasted systems have become the norm for commercial roofs. No holes are needed if a solar system is held down by enough concrete blocks.
But today’s commercial roofs are not typically designed to hold a bunch of solar panels, let alone heavy ballast blocks. Although ballast has been the easiest way to quickly install solar on flat roofs, there might be a better approach that would create more potential for solar in the commercial and industrial

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