Index: /trunk/doc/design/datasys_cost.tex
===================================================================
--- /trunk/doc/design/datasys_cost.tex	(revision 185)
+++ /trunk/doc/design/datasys_cost.tex	(revision 186)
@@ -1,5 +1,5 @@
 % Copyright (C) 2004  Joshua Hoblitt
 %
-% $Id: datasys_cost.tex,v 1.3 2004-03-10 00:59:27 jhoblitt Exp $
+% $Id: datasys_cost.tex,v 1.4 2004-03-10 02:33:47 jhoblitt Exp $
 
 \documentclass[panstarrs,psreport]{panstarrs}
@@ -210,5 +210,72 @@
 \section{Power Consumption}
 
-\tbd{Total power consumptions is TBD}
+\subsection{Nodes}
+
+The Pan-STARRS Prototype IPP Computational/Storage Node draws $\sim600w$ when idle.  As this is the idle load and the power consumption of computer components is rapidly increasing we should budget for $\sim750w$ per node.
+
+\begin{center}
+85 nodes
+\begin{tabular}{lr}
+Item		&Estimated Power Consumption\\
+\cline{1-2}
+Nodes		&63,750w\\
+Network + Misc.	&25,000w\\
+\cline{1-2}
+Total		&88,750w\\
+\end{tabular}
+\end{center}
+
+\begin{center}
+132 nodes
+\begin{tabular}{lr}
+Item		&Estimated Power Consumption\\
+\cline{1-2}
+Nodes		&99,000w\\
+Network + Misc.	&25,000w\\
+\cline{1-2}
+Total		&124,000w\\
+\end{tabular}
+\end{center}
+
+\subsection{Air Conditioning}
+
+It takes 1ton of A/C to remove 12kBTU of heat.
+
+\begin{center}
+\begin{tabular}{lr}
+Heat Generated	&A/C Load\\
+\cline{1-2}
+88,750w		&25.242tons\\
+124,000w	&35.268tons\\
+\end{tabular}
+\end{center}
+
+\subsection{Total Power Consumption}
+
+Assuming that 1ton of A/C requires 1kw of power.
+
+\begin{center}
+\begin{tabular}{lrr}
+Item		&85 nodes	&132 nodes\\
+\cline{1-3}
+Nodes + Net + Misc.	&88,750w	&124,000w\\
+A/C		&25,242w	&35,268w\\
+\cline{1-3}
+Total		&113,992w	&159,268w\\
+\end{tabular}
+\end{center}
+
+\subsection{Cost Estimate}
+
+This Billing estimate is from Maui Electric Company, Ltd. (MECO) for schedule "J" service with a power factor of 0.9 (MECO refers to this as a power factor of 90\%) based on Feburary, 2004 rates.
+
+\begin{center}
+\begin{tabular}{lr}
+Peak Demand&Estimated Price\\
+\cline{1-2}
+115kw		&\$13,000 per month\\
+160kw		&\$18,100 per month\\
+\end{tabular}
+\end{center}
 
 \section{Misc}