Plain copper is already too expensive for power lines, and this alloy is more expensive than copper alone. Transmission and distribution lines are typically mad

Plain copper is already too expensive for power lines, and this alloy is more expensive than copper alone. Transmission and distribution lines are typically made with aluminum conductors layered over a steel core for mechanical strength: https://en.wikipedia.org/wiki/Aluminium-conductor_steel-reinforced_cable https://en.wikipedia.org/wiki/Aluminium-conductor_steel-rein... Aluminum is a worse conductor than copper on a volumetric basis but a better conductor on a mass basis, which is important for overhead lines supporting their own weight against gravity. It also costs significantly less than copper.