Aggregated Nodes Types for example:
<ul>
<li>SYS - System Zone/Region; </li>
</ul>
<ul>
<li>RUC - RUC Zone; </li>
</ul>
<ul>
<li>LFZ - Load Forecast Zone; </li>
</ul>
<ul>
<li>REG - Market Energy/Ancillary Service Region; </li>
</ul>
<ul>
<li>AGR - Aggregate Generation Resource; </li>
</ul>
<ul>
<li>POD - Point of Delivery; </li>
</ul>
<ul>
<li>ALR - Aggregate Load Resource; </li>
</ul>
<ul>
<li>LTAC - Load TransmissionAccessCharge (TAC) Group; </li>
</ul>
<ul>
<li>ACA - Adjacent Control Area </li>
</ul>
<ul>
<li>ASR - Aggregated System Resource </li>
</ul>
<ul>
<li>ECA - Embedded Control Area </li>
</ul>