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Energy2026-09-14 · 3 min

Understand your electricity patterns over a year

A monthly bill tells you how much electricity you used, not when you used it. That makes tariff comparisons mostly guesswork.

In Spain, the distributor holds the hourly readings, not the retailer. Each area has its own distributor. e-distribucion covers part of Spain, and your bill tells you whether it is your distributor.

If e-distribucion is your distributor, its private area contains the readings. The portal displays them in small pieces, though, which makes the full year hard to inspect.

I wrote a tool that reads the full history and produces one report for each CUPS.

The three periods

Since 2021, the standard home tariff has been 2.0TD, whose grid fee changes by hour:

  • P1 (peak): the most expensive. Monday to Friday, 10:00-14:00 and 18:00-22:00.
  • P2 (flat): in between.
  • P3 (off-peak): the cheapest. Weekdays 00:00-08:00, plus all weekend and national holidays.

Retailers sell the same energy at a different price for each period, so your bill is a mix of the three. The tool does the mix for you: it adds your hours into P1, P2 and P3.

Choose the tariff

Once you see the split, the choice becomes easier:

  • mostly P3: look for a low off-peak price,
  • a lot in P1: look for a low peak price, or a flat price,
  • the three periods close: a flat price is simpler.

There are many comparators, and luzfija.es is one of them. Copy the split into a comparator, and compare your numbers.

Adjust the contracted power

Contracted power is the fixed part of the bill. Two mistakes are common:

  • Too high: you pay for a power that you never use.
  • Too low: the ICP trips and the supply goes off.

The 2.0TD tariff has two power periods. P1 covers the peak and flat hours, P2 the off-peak hours. The tool gives the maximum demanded power for each period, and it lists the months where you passed the contract.

kWh is how much you used. kW is how strong you pulled at one moment. Pick the contract with the maximum demanded power, and the tariff with the split by period.

Real data, not estimates

The portal marks some hours as estimated because the distributor has not received a real reading yet. The number can be close, but it is not a measure.

The tool marks every day as real, estimated or pending, and it finds the longest period in a row with real data only. Use that period in a comparator, and the result comes from real measures.

See it for yourself

pipx install .
edistribucion login --save   # one time
edistribucion                # the report

The report includes real and estimated totals, the P1/P2/P3 split, usage by year, month, hour, and day of the week, the highest-use hours, demanded power, and a reading map.

The code and the guide are here:

https://github.com/jacano/edistribucion-client

It uses HTTP only, with no browser and no third-party package. It is unofficial: Endesa does not support it. It needs the 2.0TD tariff and the e-distribucion distributor, so check your bill first.

Where to read more

Try it

The tool is free and open source. Use it only with your own account, and check the results before changing your tariff or contracted power.

  • Star the project on GitHub.
  • Send it to a friend whose distributor is e-distribucion.

Read your last three years of consumption.