The amount of solar electricity flowing from a power plant can fluctuate, sometimes significantly, depending on the weather and other conditions.

FORBES: Feds Fund Four Projects To Simplify Solar Gear Designs and Predict Power Output

While the swim might seem likely to get cut, Korff cited a 2011 fire at a sewage-treatment plant that led to millions of gallons of waste flowing into the Hudson.

WSJ: Sewage Puts Ironman Swim in Doubt