Low-energy buildings, which include zero-energy buildings, passive houses and green buildings, may use any of a large number of techniques to lower energy use.
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The following are some of the techniques used to achieve low-energy buildings, which excludes energy generation (microgeneration).
Improvements to building envelope
- Active daylighting
 - Barra system
 - Brise soleil
 - Cool roof and green roof
 - Daylighting
 - Double envelope house
 - Earth sheltering
 - Energy plus house
 - Fluorescent lighting, compact fluorescent lamp, and LED lighting
 - History of passive solar building design
 - Low-energy house
 - Passive daylighting
 - Passive house
 - Passive solar
 - Passive solar building design
 - Quadruple glazing
 - Solar energy
 - Superinsulation
 - Sustainable architecture
 - Sustainability
 - Trombe wall
 - Windcatcher
 - Zero energy building
 - Zero heating building
 
Improvements to heating, cooling, ventilation and water heating
Energy rating systems
- EnerGuide (Canada)
 - Home energy rating (US)
 - House Energy Rating (Australia)
 - LEED - Leadership in Energy and Environmental Design
 - National Home Energy Rating (UK)
 
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