&gt; So, according to that source, out of state coal consumption can range from 5% to 50%. It doesn&#x27;t say exactly when the 50% figure was hit, or why.<p>The quote is from the Southern California Public Power Agency (SCPPA). Their members include LADWP, Anaheim, and other municipal power agencies.  The 50% of which he speaks is, like others have noted, for demand (not energy), but only for SCPPA, not all of California. The &lt; 5% is for all of California.