Price dips (or spikes) such as this are better understood as forecast failures: inability to accurately predict available renewables supply relative to demand, and&#x2F;or not being able to cut back thermal (fossil) generation rapidly enough (coal and nuclear plants respond slowly).<p>The headlines are impressive, but these really aren&#x27;t the events you want to watch, but rather the long-term average renewables contribution and <i>absence</i> of either negative or very high price anomolies.