Wind and temperature aloft forecast includes the note: "TEMPS NEG ABOVE 24000" and omit the minus sign.
With normal lapse rates (3.6℉/1000 feet), you're gonna need a heater in any general aviation airplane.
Single engine airplanes tend to use exhaust heat to heat outside air as a heater, so no fuel consumed. For airplanes that use a combustion heater, fuel use needs to be considered in flight planning. Therefore I'd expect the same for electric powered airplanes.
With normal lapse rates (3.6℉/1000 feet), you're gonna need a heater in any general aviation airplane.
Single engine airplanes tend to use exhaust heat to heat outside air as a heater, so no fuel consumed. For airplanes that use a combustion heater, fuel use needs to be considered in flight planning. Therefore I'd expect the same for electric powered airplanes.