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spreadsheet or easy claculation... of passivity in house

a recognized soft to calculate the passivity of a house ... shame that costs 130€ ? what's to diffuse as it costs for all !

Solar energy can be utilized in various ways - to provide electricity, mechanical power, heat and lighting. Passive solar heating and cooling can save substantial electricity bills. Design of a building is very important for tapping passive solar energy. The building and windows are designed in such a way that they carefully balance their energy requirements without additional mechanical equipment. Solar benefits are utilized through windows and pumps, and fans are used minimally.

This is Part 3 in a series on Passive Solar Design by Will Stewart, a Systems Engineer in the energy industry and longtime reader of theoildrum.com. As a new administration considers how best to make future infrastructure investments, it seems like some of the lowest hanging fruit is better utilization of the daily solar flux, not only directly with photovoltaic and hot water, but also in building construction and placement. I encourage our readers to further their understanding of passive solar concepts by reading/bookmarking this series.

Solar home designs explained. Learn the principles of passive solar home design

The Energy Department today announced a new partnership between the Department's Challenge Home program and Passive House Institute US (PHIUS) on a voluntary certification process for homes that are so energy-efficient, they can offset most or al...

Highlights of the energy year 2007

We can significantly reduce our energy demand per housing unit by raising the energy standards, by building more apartment buildings and by phasing out old inefficient units. An Energy Star certified home would reduce energy consumption by 15% over a conventional home.