[Terrapreta] -----and Net Present Value of TP Benefits

[Greg and April]

The question goes beyond "invest or not to invest" actually being able to 
invest plays a big part - in many cases more than deciding to actually do it 
or not.

Make no mistake, char cost money - and that can be quite a large amount 
depending on the circumstances.


Greg H.


----- Original Message ----- 
From: "Kevin Chisholm" <kchisholm at ca.inter.net>
To: "Richard Haard" <richrd at nas.com>
Cc: "Miles Tom" <terrapreta at bioenergylists.org>; "Baur Hans" 
<hans at riseup.net>; "Todd Jones" <tjones at nas.com>; "Michael Pilarski" 
<friendsofthetrees at yahoo.com>; "Toch Susan" <anaturalresource at gmail.com>
Sent: Saturday, March 15, 2008 23:09
Subject: Re: [Terrapreta] -----and Net Present Value of TP Benefits


> Dear Richard
>
SNIP

>
> The "Net Present Value" is simply a way of converting the benefits of TP
> to a common denominator, that being $. Doesn't matter if it is CEC, OM,
> nutrient retention, drought resistance, a concern for global warming,
> higher yields, better quality, carbon credits... all of these are
> benefits having tangible and intangible value. To get these benefits,
> one must "invest" in charcoal, and its application. Charcoal, as one
> aspect of Terra Preta, is costly, but the investment has a long life.
> Annual returns per acre will be small, but they also will continue to
> flow for a long time also. The "Net Present Value" is a simple way to
> compare the value of Investment over a period of time, with Returns over
> a period of time, so that one can make a rational decision  "invest or
> not to invest.... that is the question."