t of pipes. For buildings, this the capital cost part of <a href="#org39f617f">connection cost</a>, plant cost, individual system cost and insulation cost.
</p>

<p>
The different choices are:
</p>

<dl class="org-dl">
<dt>Principal</dt><dd>This is the upfront capital cost, without any cost of replacement or financing</dd>
<dt>PV Capex</dt><dd>This is the present value of the capital cost, replacement costs, and any finance costs</dd>
<dt>Σ Capex</dt><dd>This is the undiscounted version of PV capex, so all