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How can a building send extra renewable energy back to the power grid?

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Buildings can contribute surplus renewable energy back to the power grid by maintaining a connection to the traditional electrical utility while utilizing on-site microgeneration technologies.

When a building generates more electricity than it consumes, the excess power is delivered back to the utility through the grid connection. This process is often managed through net metering, a policy that allows non-utility energy producers to feed electricity into the grid. Under net metering, utility meters record both energy inflows and outflows, and the building owner is typically credited for the surplus energy provided to the utility, which can offset their own electricity costs.1

To facilitate this, buildings use power-conditioning equipment to convert energy into a usable form for the grid and rely on monitoring systems to track the electricity fed back to the utility. While some buildings are designed to be autonomous and operate independently of the grid, retaining a grid connection is the primary method for exporting surplus energy and participating in net-metering programs.1