TRANSMISION
Availability rate of the transmission grid
Information based on provisional data as of January 2023
The quality of the transmission grid is also evaluated based on the availability of the facilities that it is made up of. Availability measures the capacity or possibility of the system to use the various elements of the transmission grid, these being the electricity line circuits, transformers, and active or reactive power control elements (reactance and capacitors).
The evolution of the availability indicator over the last five years is shown below. The availability index of the transmission grid at the national level in 2022 reached a value of 98.16 %, lower than the 98.51 % achieved in 2021. The peninsular transmission grid reached a value of 98.15 % in 2022, lower than the 98.48 % in 2021. In the Balearic and Canary Islands systems, grid availability was 98.52 % (98.61 % in 2021) and 98.69 % (99.23 % in 2021), respectively. In general, the availability index has stabilised at over 98 %, which is higher than the reference of 97 % established in article 26.2 of Royal Decree 1955/2000.