Carmen, thanks for reply. That seems to be pretty much what she was saying to me,(translated through Google). She would have to pay a share of the cost... she showed me pictures of the torn up gas lines outside apt. when she was there last November. Then they cut the gas to her apt. and she would have to pay to have the lines in her apt. fixed. She bought the apt., so not a rental. I'm not sure if all the units have gas disconnected still. She said when she was there back in Nov. the apartment manager did talk to her and showed her the options. I don't know if there was organized asemblias with other owners..
Ok, so this is a complete different scenario now.
Legal details can't be overlooked. First of all, the owner cannot miss the monthly payment of building maintenance expenses. According the bylaws, generally after 3 months, the debt goes to legal department which is a painful.
Generally speaking, it is crucial to contribute with the payments that the Consorcio agreed (usually in an Asamblea) to pay in order to fix the gas system so Metrogas can restore the supply. The owner has to pay her share. No way out (always taking the bylaws of the building into account).
Of course to change pipes the gas licenced plumber will have to break into some walls and some tyles will have to be changed, etc, but the cost of this job will be covered among all the owners, everybody according there percentage rate (as it is in the bylaws and it is informed in the monhly building expenses "liquidación de expensas".
We say "me voy a mi casa" but truth is, a unit it's not a house, it's a unit, a part in a condominium, so individual solutions may not apply and end up in much more complicated issues.
You need the whole picture. However, she could be able to buy all the electrical appliances she wants but first she needs to make sure what is the real condition of the electric system as you do not want to cause a fire and yet she cannot escape from the common expenses.
Besides, most of the buildings are not ready for a switch of systems just like that. Believe me. I also work as a property manager and building manager and people tend to deny reality big time.