No. Article 17 ter of the Spanish Notarial Law, introduced by Law 11/2023, excludes general and lasting powers of attorney from video conference signing. From abroad they are signed at the Spanish consulate or before a notary in your country, with an apostille.
Powers of attorney for a specific act, such as selling a particular home or accepting an inheritance, can be signed by video conference, and so can powers for litigation and for dealing with public authorities.