Typically, airplanes are deiced with heat from the compressor section of the engines ("bleed air"). Evidently it's cheaper/lighter to do that than it is to gene

Typically, airplanes are deiced with heat from the compressor section of the engines ("bleed air"). Evidently it's cheaper/lighter to do that than it is to generate the substantial amounts of electricity that would be required to achieve the same effect electrically. The 787 is one aircraft I know that uses what you describe for wing anti-ice. I believe it still uses bleed air to deice the engine nacelles.