ndividual systems using the <b>Add system</b> button. For each type of system you will have to say:
</p>

<dl class="org-dl">
<dt>A name</dt><dd>This is editable by clicking the heading; in the image above clicking "Gas CH" would let you edit the name.</dd>
<dt>Heat cost</dt><dd>This is the cost per kWh delivered heat. If you have a fuel price you need to divide it by system efficiency to get this value.</dd>
<dt>Fixed capex</dt><dd>If this system is installed in a building, this capital cost must be paid.<