Back خط جهد عالي Arabic Електрически далекопровод Bulgarian ওভারহেড পাওয়ার লাইন Bengali/Bangla Dalekovod BS Línia elèctrica aèria Catalan Nadzemní elektrické vedení Czech Freileitung German Elektrodukto Esperanto Línea eléctrica aérea Spanish Energia elektrikoa garraiatzeko aireko linea Basque
An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors (commonly multiples of three) suspended by towers or poles. Since the surrounding air provides good cooling, insulation along long passages and allows optical inspection, overhead power lines are generally the lowest-cost method of power transmission for large quantities of electric energy.