Ted Hesson, a reporter with the National Journal, recently did an article featuring the cool roof system of Patrick Bulot. The article discusses adaptations to climate change and you can read it on The Atlantic website here.
It should be mentioned that there was some important information left out the of the interview with Jeff Geanangel. Mr. Geanangel had a cool roof installed by Patrick Bulot in late August of 2014. He uses a Nest thermostat to track how many hours his air conditioning unit runs throughout the year. When comparing the April to August timespan of 2014 with that same period in 2015, he saw a reduction of 28% in the amount of time his air conditioner ran with the new cool roof installed.
He says that this improved air conditioning efficiency could have been greater if he would not have lowered his thermostat a few degrees that summer. And though he only saved 10% on his electricity bill in 2015 as compared to 2014, he also had a pool and hot tub installed in 2015 which use a substantial amount of electricity.