Veena Subramanyam 8/31/2009

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Hi Charlie,
I was having difficulty in understanding the "DISCOUNTED GHG SAVING " calculations in the final summaries view.
It has been used in the excercises for final dollar per ton calculations.I had a doubt regarding the difference betwwen the yearly GHG avoided by a scenario and the discounted one used in leap calculations.
PS suggest
veena

Charlie Heaps 9/2/2009
 

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> I was having difficulty in understanding the "DISCOUNTED GHG SAVING " calculations in the final summaries view. It has been used in the excercises for final dollar per ton calculations.I had a doubt regarding the difference between the yearly GHG avoided by a scenario and the discounted one used in leap calculations.

Some people advocate for the idea that not only costs but also GHG savings should be discounted. That is when showing costs/ton of savings the tons as well as the costs should be discounted. I personally do not like that approach as I think it adds confusion.

However, in the cost summary report I do include an indicator showing discounted GHG savings as well as the perhaps more common approach in which GHG savings are simply summed across all years.

I am actually thinking of removing the discounted savings indicator. Let me know what you think.

Charlie