“Extreme heat days” are those days when the temperature exceeds 95 degrees. (Los Angeles Times)More heat, more stress on systemMultiple transformers were knocked out during heat waves in 2006 and 2007, causing rolling blackouts. The agency responded by replacing hundreds of smaller transformers each year to prevent future blackouts, DWP officials said. DWP officials said they are preparing for future decades in which temperatures are expected to grow significantly hotter. They are working to forecast estimated demand, peak heat days and population growth.

Source: Los Angeles Times July 11, 2017 05:03 UTC