Do you understand cost-benefit analysis. It's an economic study technique where you add up all the ecomnomic costs and weigh them against the sum of all the benefits. The challange is to assign a dollar value to all the factors under study. You need to include interest, cash flow, and inflation factors to make a credible analysis.
If you can show that your green design will return savings then you have a good economic argument. If it shows you that it is not the least expensive system, the you are wasting scarce resources. It is foolish to waste scarce planetary resources in the name of a fashionable fad such as sustainable design.
I don't know many designers who know how to perform a cost-benefit analysis.
Yes, I have seen a study that was done by BNIM. It detailed the cost analysis for various LEED ratings for a selected building. It was interesting to see the costs and benifits in the different categories. It covered about five different categories from a "standard" design to a very comprehensive, self sustainable building. The options in the middle were the most practical in all terms.
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