EnvironmentUp to date · Jan 15, 2026
Net Zero
A building or home that produces as much energy as it consumes on a net annual basis, typically through a combination of efficiency measures and on-site renewable generation (solar).
Why It Matters
Achieving net zero means your annual energy bill is effectively $0 (or close to it). It requires aggressive efficiency + right-sized solar + possibly storage.
Related Topics
Related Terms
HERS Index (Home Energy Rating System)
A scoring system from 0-150+ that rates a home's energy efficiency. A HERS Index of 100 equals the reference home; lower scores are more efficient. A net-zero home scores 0.
Net Metering
A billing mechanism that credits solar energy system owners for the electricity they add to the grid. The excess power generated during the day offsets power consumed at night.