Metro Nashville has its first net-zero energy building.

The new Central Administration Building near the Cumberland River generates more energy than it can use on a daily basis, through energy efficiency and renewable energy generation on-site.

“It has smart lighting, low-flow faucets, automation systems that will automatically raise and lower the temperature in the building based on demand,” Metro Water director Scott Potter said from the building’s roof, which is outfitted with 500 solar panels. The city also planted trees next the building.

The excess power generated by the energy efficient building will be used next door at the Central Water Reclamation Facility.

The building comes about two years after the Metro Council passed green building standards to reduce energy and water usage in Nashville’s government buildings.

Correction: A previous version of this story and headline said the trees were on the roof of the new building. In fact, they are planted on a berm nearby.