The Island Tower is for the most part electric, and as a result there is no Gas service available at Wailulu Bar & Grill features the first all-electric kitchen at WDW and no Gas service on the grounds for lighting.
The tower also utilizes "bright" energy-efficient lighting to further minimize energy usage.
And yes
@GADisneyDad14 I think it is also very bright, and quite generic.
Most of the concrete is prefabbed panels built off-site. As WDW works towards their environmental goals of being NetZero emissions by 2030.
Dave