Understanding electricity and utility bills

Overview

Spanish utility bills can look unfamiliar at first, especially electricity bills, which combine several separate charges rather than a single per-unit price. Knowing what each section means makes it much easier to spot errors or compare providers.

Requirements

• This applies once you already have an active utility account in your name

Step-by-step process

• Locate your contracted power (potencia contratada) on your electricity bill — this is a fixed daily charge based on the capacity you've contracted, separate from how much electricity you actually use
• Check the energy consumption charge (término de energía), which reflects actual usage and is where tariff comparisons matter most
• Look for regulated charges and taxes, which are added on top and aren't negotiable between providers
• For water bills, check whether the charge is a fixed standing charge, a consumption-based charge, or both, since this varies by municipality
• Compare your bill month to month, and flag any unexplained jump to your provider

Required documents

• Your utility bill (factura)
• Your contract, to confirm the tariff and contracted power you agreed to

Common mistakes

• Assuming a high bill is a billing error without first checking whether contracted power or usage actually increased
• Not reviewing contracted power periodically — many households pay for more capacity than they need
• Overlooking that gas and electricity are typically billed and metered separately, even when supplied by the same company

Practical tips

• Lowering your contracted power (if you consistently use less than what you've contracted) can reduce your fixed daily charge — check with your provider before changing it
• Comparison sites can show whether your current tariff is competitive for your usage pattern

How Tuchati can help

If a bill looks wrong or unexpectedly high, Tuchati can help you work out whether it's an error worth disputing.