Alan Oshima
Analyst · ExodusPoint. Please go ahead with your question
Andy, this is Alan. Hi. You may have read an article on a situation that occurred on Hawaii, which is not part of Hawaiian Electric, but we face the same issues. And they had an island wide outage at a time when one of their units was down for planned maintenance and backup unit went down to another cause. At the same time, it was a cloudy day and so they couldn't hold low and so they have to, they went on a blackout and then for a couple of days until they could get things stabilized, they have to have rolling blackouts schedule. So, but that indicates the fragility of islanded systems that cannot draw from neighboring states or other grids we're out stand-alone all of us each island is stand-alone, and the needs for redundancy backup and resource portfolio that is balanced and not all in one basket. So, next time you come to Hawaii, you'll observe the cloud cover for example and even on each Island solar is not consistent throughout the day, as clouds cover one part of the island, we follow it. We track it in our system operation centers to try to predict total solar volt from minute to minute or even in smaller increments, so that we can manage our own resources and other resources to meet the gaps. And so, you heard earlier about overhauls. We are operating primarily except for our new Schofield Generating Station, what I call the step and forget workhorses from years past and we're operating them in somewhat abnormal ways of ramping up and down to meet the vagaries of the primary source renewables, which we will do every bit that we can get. But that results in additional wear and tear as the plants age. So, back in 2006, on this island, Oahu where 80% of the population resides, we had 40 days approximately of rain and cloud cover. We had mudslides etcetera. So, we use that in terms of our planning for what can carry us through, and it's not just climate change, but things that happened – happen on islands. And so, you're right, it happens and we have to do that all in our system planning.