power grid; electricity transmission network
Technical term for the network of high-voltage lines and substations that carry electricity over long distances.
There are also regions where the development of the power grid is lagging behind.
There are many challenges in connecting renewable energy to the existing transmission network.
電力網 is a broader term for the entire electrical power network, including both transmission and distribution. 送電網 specifically refers to the transmission part.
Compound of 送電 (power transmission) and 網 (network).