An insulated heating element running on electricity heats the hot air balloon. The electricity is received from the electric wire doubling as a tether for the balloon or blimp.-- pashute, May 21 2019 Tethered hot-air balloon with heating by electric cable from ground https://patents.goo...tent/RU2632551C1/enStumbled upon while looking for prior art on a different idea. [a1, Feb 03 2024] //Thether// sp. thither, as in thither & yon.-- pocmloc, May 21 2019 So tethered upwards towards the high voltages?-- wjt, May 22 2019 How come I missed this? Even though it's baked [+]-- doctorremulac3, Feb 03 2024 random, halfbakery