Skip to main content
Abstract blue background with gradient curves and smooth transitions.

Net Zero Energy Homes | Washington Gas Updates

October 17, 2025

Discover how Net Zero Energy Homes work, their key components like solar panels and high-performance, energy-efficient appliances, and why they matter for reducing utility bills and improving comfort.

Net Zero Energy Homes:

What is a Net Zero Energy Home?

A residence qualifies as a Net Zero Energy Home when it produces as much energy as it consumes over the span of a year. To meet this standard, it must achieve a score of 0 on the HERS® Index – a nationally recognized system for inspecting and calculating a home’s energy performance.

This is made possible by combining high-efficiency construction techniques with high-performance systems and appliances.

Key Components of a Net Zero Energy Home

  • Robust thermal envelope: Airtight siding, triple-paned windows, precision door & window sealing, and high-R-value insulation for every living space including the basement reduce heat loss and eliminate air leakage.
  • Roof-mounted solar panels: These panels turn sunlight into electricity to power the home. Any extra energy can be sent back to the electric grid, earning energy credits and helping the home reach Net Zero Energy.
  • Advanced mechanical systems: Heat recovery ventilators keep indoor air fresh by bringing in clean outdoor air while removing stale indoor air. At the same time, they capture heat from the outgoing air and reuse it — which can reduce energy waste and help you stay comfortable year-round, all while lowering heating and cooling costs.
  • Energy-smart appliances, lighting and fuel systems: Energy-efficient appliances, LED lighting, and smart thermostats capable of real-time energy monitoring dashboards help homeowners track and optimize usage. Incorporating high-efficiency natural gas systems for space & water heating and cooking can support the home’s overall energy balance and provide year-round comfort.

Why Zero Matters

A Net Zero Energy Home has many benefits, including that it can:

  • Help reduce utility bills
  • Increase long-term return on investment
  • Maintain year-round comfort
  • Help builders and contractors enhance their portfolios

Whether you’re a homeowner looking to reduce energy use or a commercial builder seeking innovative efficiency strategies, be on the lookout for more updates about Washington Gas’ Net Zero Energy Homes initiatives.