Bigger is not necessarily better. Effective floor plans use less building materials and less energy is used. An open, adaptable, multi-use space is ideal that can change with your personal needs.
Furniture
Furniture made from low-emission, natural materials – wool rugs, sofas and chairs made of untreated cotton with hardwood frames.
Lighting
Wiring your home so that the light can be individually controlled lets you illuminate specific areas of a room independently. Lighting the whole room wastes electricity.
Using automatic timers and dimmers save electricity.
CFL bulbs use 75% less energy than the incandescent variety. Make sure your burnt out CFLs are disposed of properly as they contain mercury.
Windows
Large windows let in natural light and give your home a more spacious appearance. South-facing windows allow for substantial heating from the sun. Exterior shades can prevent summer overheating.
Frame material, special coatings, the number of panes of glass, gas between panes and spacer materials all contribute to energy efficiency of windows.