How to Read a Czech Energy Bill: Deposits, Refunds, 2026 Prices

What to actually look for on the statement

You do not need to understand every line. Find five things:

• Consumption in kWh or MWh. Compare it with last year. A jump with no obvious cause means either a change in your household or a metering error.
• Price per unit. What you pay per 1 kWh in total, including distribution and taxes. This is the number you can compare against other suppliers.
• The two price components. The regulated part (distribution and fees) is set yearly by ERÚ and you cannot influence it. The commercial part is set by your supplier, and that one you can change.
• The distribution tariff. A code such as D02d or D25d. A wrongly chosen tariff makes every kilowatt-hour more expensive.
• Total deposits vs. the billed amount. This ratio tells you whether your deposits are set sensibly.

Electricity and gas prices in 2026

2026 brought good news for Czech households. The state took over the renewable-support fee (POZE), which customers had paid at CZK 599 per MWh until the end of 2025. Per ERÚ's amended price decree, the regulated component of household electricity fell by 15.1% as a result.

So what does electricity cost? Per a comparison by the e15 portal, commercial prices of the big suppliers in early 2026 sat roughly between CZK 3.5 and 3.9 per kWh including VAT on open-ended contracts. The total price including distribution and fees works out at roughly CZK 7.3 to 8.4 per kWh on the common D02d tariff, per calculations by Kalkulátor.cz. That is about EUR 0.30 to 0.35, at the ČNB rate of around CZK 24.2 per euro from late July 2026.

For gas, the average commercial price in spring 2026 was around CZK 1.29 per kWh excluding VAT, per the Ušetřeno.cz portal. The final price with distribution and VAT is higher and depends on your consumption band, so always read it off your own statement, not an ad.

The distribution tariff: a quiet money thief

The tariff defines the conditions under which the distributor charges your electricity. The basics for households:

• D01d and D02d: single tariff for flats and houses without electric heating. D02d is meant for higher consumption.
• D25d: dual tariff with 8 hours of cheaper off-peak power, typically for households with an electric water heater.
• D57d: the tariff for electric heating and heat pumps, with a large part of the day in the low tariff.

The practical impact: if you heat water with a boiler while on the single-tariff D02d, you pay the full price even in hours when you could pay less. Your tariff is printed on the statement, and switching it is handled by your supplier, usually free of charge.

A refund is not a win: let's do the math

A concrete example. An average Czech household consumes around 3 MWh of electricity per year, per ČEZ Group. At a total price of CZK 8 per kWh that is CZK 24,000 a year, just under EUR 1,000. A sensible deposit is one twelfth: CZK 2,000 a month.

But if your supplier left your deposit at CZK 2,600 after the expensive year 2022 and nobody lowered it since, you send CZK 31,200 over the year. The CZK 7,200 refund, roughly EUR 300, does come back after the annual statement, but you lent that money interest-free for a whole year. A large recurring refund is not a bonus, it is a signal of a badly set deposit.

The reverse also holds: a deposit set too low feels comfortable but ends in a lump-sum balance due of thousands of crowns, usually at the worst possible moment.

Five steps to stop overpaying

1. Compare consumption with last year. Growth of tens of percent with no new appliance is a reason to check the meter reading.
2. Check your distribution tariff. A boiler or heat pump without a dual tariff means needlessly expensive power.
3. Recalculate your deposit. Expected annual cost divided by twelve. If your deposit is much higher, request a reduction; per the Energy Act the supplier is bound by your reasonably expected consumption, ERÚ reminds.
4. Compare your price per kWh with the market. You choose the commercial component yourself. If your price list clearly exceeds current offers, it is time for a new contract or supplier.
5. Complain about errors in time. Per ERÚ, the supplier must handle a billing complaint within 15 days, 30 in complex cases, and settle a justified difference within 30 days of receiving the complaint.

Where energy meets your budget

The statement arrives once a year, but deposits leave your account every month. That is where you see how big a slice of your budget energy really takes, next to rent, groceries and subscriptions. We covered the bigger picture in where Czech households' money goes, and the Slovak angle on bills and fees lives in our guide for Slovakia.

If you want to see your own numbers without manual math, VESTELON FLOW reads one uploaded bank statement and shows how much you actually send for energy each month, whether a deposit quietly crept up, and how it compares with your other recurring payments. No bank login, and the first report is free.

One honesty note: energy prices move, and the figures above are indicative averages and ranges from public sources from the first half of 2026. Your real price list is always the one on your contract and your statement.

FAQ

By when must the supplier return my refund?

The method and date are set by your contract, but you should receive the refund no later than the due date stated on the invoice. If the supplier goes silent, follow up in writing and turn to ERÚ if needed.

Can I lower the deposits myself?

Not unilaterally, but you have the right to request a reduction, and the supplier must be able to justify the amount by your expected consumption. ERÚ publishes guidance and a complaint template for cases where the supplier refuses.

Is switching suppliers worth it?

Always compare the total price per kWh plus the fixed monthly fee, not the marketing slogan. The regulated part is identical everywhere; you only make a difference on the commercial component. Even a few tens of hellers per kWh means hundreds of crowns a year at 3 MWh.