Q: What is net-zero energy?

A: A net-zero energy balance is achieved when a home produces as much energy as it consumes over the course of a 12-month period. Though a challenge to accomplish, and almost always requiring some sort of on-site energy generation system (e.g., solar roof panels), achieving a net-zero energy balance isn't as unrealistic — or as expensive — as it was just 5 years ago.

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