I've commented in earlier posts on Korea's smart-grid pilot project in Jeju. Now, in an interesting related development, the Korea Power Exchange has released an app for the iPhone. Reportedly, this makes Korea the first country in the world (certainly it is one of the first) to put real-time data on electric power supply and consumption on the mobile internet. The English application is quite well done and very informative. I assume the Korean side of the service is, if anything, even more informative. In addition to tracking current electricity supply and demand levels, the service has historical data, future projections, information on electricity pricing and more. It has a very nice explanation of the future changes coming to the market for electric power here and around the world with the advent of the smart-grid era.