The full guide
Change of holder or new connection?
Most homes already have supplies connected. You simply ask each company for a change of account holder (cambio de titular). A new connection (alta) is only needed if a supply has been cut off or never connected, and may need extra paperwork such as a habitability certificate. Some landlords keep utilities in their name and recharge you; check your contract.
Documents checklist
| Document | Notes |
|---|---|
| NIE, TIE or passport | Some companies insist on an NIE |
| Rental contract or deeds | Proves you live there |
| Bank account (IBAN) | For direct debit; an EU IBAN usually works |
| CUPS number | Electricity and gas supply code from an old bill |
| Meter readings | Photos on your move-in date |
Electricity: understanding your options
| Option | How it works |
|---|---|
| Regulated tariff (PVPC) | Price changes hourly with the market; available for homes up to 10 kW |
| Free-market fixed price | A set price per kWh, sometimes with different day and night rates |
| Contracted power (potencia) | The kW you pay for whether you use it or not; don’t contract more than you need |
The CNMC’s official comparator shows offers available at your postcode. Households on low incomes may qualify for the bono social discount.
Water and gas
Water is supplied by a local or regional company, so you can’t choose your provider. Change the holder with your contract and ID. For gas, homes have either natural gas, handled like electricity, or butane bottles delivered to your door, which need a small contract and periodic safety check.
Internet and mobile
Fibre is widely available in Spanish cities, and installation usually takes one to two weeks. Many deals bundle fibre and mobile. Watch for permanencia: a tie-in, often 12 months, with a fee if you leave early. Mobile SIMs require ID to register.
Common mistakes
Not taking meter readings. You could pay for the previous tenant’s use.
Too much contracted power. It’s a fixed cost every month.
Signing a long tie-in. Check permanencia before signing for internet.
Forgetting to cancel when you leave. Keep contract numbers so you can close accounts.
Frequently asked questions
Do I need an NIE to set up utilities?
Many companies ask for one, but some accept a passport. Get your NIE early to avoid problems.
How long does a change of holder take?
Usually a few days, and the supply isn’t interrupted.
Is the regulated tariff cheaper?
It depends on your usage and the market. Compare it against fixed offers on the CNMC comparator.
