The calculator

A tool that reads your Spanish electricity bill, explains it and recalculates it with your figures – in English, German, Dutch or Spanish.

Open calculator (new window)

No bill at hand? With the questionnaire you answer a few questions and start the calculator with your details.

What the calculator does

Read your bill

Upload the PDF (read in memory only, not stored) or enter figures manually: supplier, tariff type, billing days, power P1/P2, consumption, bill total.

Explain the bill lines

Power, energy, bono social financing, electricity tax, meter rental, IVA and any extra services.

Checks

Does your power look high relative to consumption? Are there extra services? How does your energy price compare with the PVPC reference, and what is your all-in price per kWh?

Neutral tariff comparison

PVPC (average of the last 30 days from the public REE interface) against a small sample of published tariffs, incl. electricity tax, meter rental and VAT. The complete comparison is the official electricity comparison of the Spanish regulator (CNMC).

More details (optional)

Floor area, people, time at home, heating (split, infrared, radiators, gas, aerothermal), cooling, hot water, pool, EV. This creates an estimated hourly profile used to extrapolate the bill to a full year.

Solar proposal

Only for houses with their own roof: system size, production, self-consumption, investment, savings and payback as a range – plus an annual comparison of compensation vs virtual battery (Naturgy, Endesa).

FAQ

14 technical explanations from 2.0TD periods to legalisation in Andalusia, each with official sources.

What the calculator is not

Not advice and no guarantee – all results are estimates.

Use it right here

The calculator runs on app.solemo.es. It is only loaded when you click the button.

Estimates only, not advice. No guarantee; your contract and the official sources (CNMC, BOE, REE) prevail.