2>
<p>Costs and utilities are introduced below.</p>
<div class="section level3">
<h3 id="utilities">Utilities<a class="anchor" aria-label="anchor" href="#utilities"></a>
</h3>
<div class="sourceCode" id="cb9"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span></span>
<span><span class="va">util_ongoing</span> <span class="op">&lt;-</span> <span class="st">"q_default"</span></span>
<span></span>
<span><span class="va">util_instant</span> <span class="op">&lt;-</span> <span class="st">"q_defa