 it to some buildings.
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<p>
This will determine an extra capital cost, incurred by the network operator in network NPV mode, or by the system in whole-system mode.
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<h3 id="pumping-costs"><span class="section-number-3">5.4.</span> Pumping costs</h3>
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<p>
THERMOS' pumping costs model is simple: pumping overheads are a fixed share of the kWh output from the system, which may 