That would raise electricity prices in Spain just like prices in Sweden - which traditionally had low prices - went up with the 'diversification' of the European distribution network. While these price effects were mostly seen in the southern half of the country due to the way Sweden is divided into 4 price regions with most of the interconnects being found in the southern-most region the recently inaugurated 'Aurora' interconnect with Finland caused prices in the north of Sweden to shoot up [1].

[1] https://www.aftonbladet.se/minekonomi/a/Exwx4A/elprissmocka-...