03Savings guides
Power, periods, kWh and euros: the same things our analysis looks at, explained in clear guides so you can apply them to your next bill.
Heating is the biggest energy cost in the home in winter. What temperature to set, which system uses least, the maintenance that genuinely shows up on the bill and the cheap fixes that save most — with the numbers to back them up.
Switching retailer doesn't cut your electricity off for a second, doesn't involve touching the meter, and on the domestic tariff you can't be charged for it. What the 2026 rules say, what paperwork you need, how long it takes and what to check before you sign.
5 minWhich hours count as peak, standard and off-peak on the 2.0TD tariff, how much the price changes between them, and how to tell whether shifting your consumption really pays off or does nothing at all for you.
5 minThe PVPC has changed and no longer depends solely on the daily price of electricity. We explain plainly how it is calculated now, how it differs from a fixed or indexed free-market tariff, and which profile each one suits.
5 minThe CUPS is the code that identifies your supply point, and it's needed for almost any dealing with your electricity. We explain what each part of it means, where it is on your bill and how to check you've copied it correctly.
5 minThe TUR is the regulated gas tariff and it is revised every three months. What to do ahead of the October 2026 revision, the TUR 1, 2, 3 and communal bands, who can sign up for it and when it works out better than the free market.
8 minAir conditioning sends your bill through the roof in summer, but the difference between using it well and using it badly is enormous. Temperature, maintenance, timing and the myths that cost money — with what genuinely makes a difference.
5 minThe bono social applies a 42.5% or 57.5% discount to your electricity bill for households that meet certain requirements. Who is entitled to it, what it's really worth, how to apply step by step and the mistakes that leave a lot of people out.
6 minFive very common symptoms that your electricity bill is inflated — and what to do about each one. If two or more sound familiar, it's time to review your tariff.
4 minSolar self-consumption can cut your bill down a lot, but it doesn't pay off equally for everyone. When it really is worth it, how surplus compensation works, what part batteries play and how to work out the payback with your own numbers.
6 minContracted power is charged every single day, whether you use electricity or not. How to tell if you have more than you need, how to work out what you really require, how much it saves over a year and how to make the change step by step.
6 minThe difference between the 2.0TD and 3.0TD access tariffs, explained plainly: who each one applies to, how their time periods work and what you can optimise in each case.
3 minA guide to finally understanding your electricity bill: power term, energy term, network tolls, taxes, billing period and exactly where to look to find out whether you're paying too much.
7 min