Can a power of attorney be signed electronically?
Yes, for ordinary powers of attorney. The Swedish Contracts Act (1915:218) sets no general form requirement for a power of attorney, and under article 25.1 of the eIDAS regulation (910/2014) an electronic signature may not be denied legal effect solely because it is electronic.
Whoever receives the document still decides what they accept. A bank, an authority or a counterparty may insist on a paper original, and no argument about eIDAS changes that.
Ask the recipient first. If the power of attorney will be used in a matter before a public authority, check what that authority requires before you sign.
Which powers of attorney cannot be signed electronically?
Future powers of attorney, and powers of attorney used in the purchase of real property. A future power of attorney must under section 4 of the Future Powers of Attorney Act (2017:310) be signed by the principal in the simultaneous presence of two witnesses. For property transfers, Lantmäteriet, the Swedish mapping and land registration authority, states that the deed must be signed in writing and cannot be signed electronically.
The basis for the property case is chapter 4 section 1 of the Land Code: a purchase of real property is concluded through a deed signed by the seller and the buyer. Lantmäteriet also wants the documents in original when title registration is applied for.
TRUE Sign will not carry you around a form requirement and should not be used there. Those documents go on paper.

