Energy Monitoring Study

The goal of this research is to identify the energy contributions that are made by adding passive solar attributes to an already energy efficient building.  Data was collected for over two years and these are the results of our study. 

project UA introduction

project UA appendix

project super insulated data

project passive house data
Homestead Alternatives
home of www.mysunspace.net
Designing your Space


An airlock entry can help to reduce heat loss and provide storage.  This one also takes advantage of south facing windows to provide some heat in the winter months.


This greenhouse / art studio was built without power tools.  (That includes the wonderful cordless tools that we all enjoy today.)  It is still in use, 27 years after it was built. 
A heat load analysis is an important part of sustainable design.  Complex design and engineering programs provide an accurate tool for predicting energy use.  Of course, the results are only as accurate as the information that goes into the analysis. We have been using HOT2000 since 1985. Our results have been typically measured to be within 5% of actual energy use.  As energy codes evolve, compliance by this performance analysis can be a very cost effective tool.  (Hot2000.doc) 




For new construction, you will need to provide drawings with dimensions and a complete schedule of materials.  We will provide a comparative report that shows your energy savings potential. You get realistic energy usage based on  changing material types and building orientation for solar gain.  (Comparison.doc)

You can visit a website for a net zero energy home, in Edmonton, Alberta, that utilized the HOT 2000 tool.   (netzerohome)
Montana climate can be subdivided into several categories. (MT climate.doc)
When we begin your design, we consider site conditions, micro climate and budget.

We built this sunspace  on our 250 square foot cabin in 1981.  It cost about $200 for materials and helped to lower our use of firewood.   With no running water and a wood stove for heat, we made a very small footprint, in  those days!!
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