Is crypto mining at home in the Czech Republic worth it?
At normal electricity prices in the Czech Republic (roughly 4.5–6.5 CZK/kWh as of October 2026), a home miner in a pool doesn't even earn enough to cover its own electricity. Mining at home pays off in three situations: when the miner's heat replaces electric heating, when it runs on surplus solar power, or when your electricity costs less than roughly 1.6–1.9 CZK/kWh. In all other cases, hosting in a data centre comes out better.
Summary
- The home miners Avalon Mini 3, Avalon Q and DG Home 1 would only pay for themselves at an electricity price of 1.6–1.9 CZK/kWh (at today's difficulty and price).
- A miner turns 100 % of the electricity it consumes into heat. In winter that's an advantage, in summer a problem.
- Quiet home miners run at 33–65 dB, a classic ASIC at 70–80 dB. The latter doesn't belong in living spaces without soundproofing.
- A machine up to 1.7 kW can run on a standard 16 A socket; a large ASIC (3.5 kW) needs a dedicated circuit.
What electricity costs in the Czech Republic in 2026
Since January 2026 the state has been paying the renewable energy levy (POZE) for households, so the price fell by about a tenth. The average commercial price of power was around 2.33 CZK/kWh excluding VAT in September 2026. On top of that, however, come distribution charges and tax.
For example, in the ČEZ price list for the ČEZ distribution area, the single-rate D02d tariff comes to about 6.6 CZK/kWh including VAT in total and the low rate of the D57d tariff to about 4.5 CZK/kWh. Fixed monthly charges come on top. For the calculations below we therefore use 5 CZK/kWh – which is rather a favourable case.
Do home miners pay off? A calculation with today's data
Today 1 TH/s on Bitcoin earns 0,84 Kč a day and 1 GH/s on Scrypt earns 1,86 Kč in Litecoin plus 10,60 Kč in Dogecoin. For comparison we add the cheapest location of our hosting at 1,13 Kč/kWh.
| Miner | Hashrate / power | Gross revenue per day | At home at 5 CZK/kWh | In hosting (1.13 CZK/kWh) | Break-even |
|---|---|---|---|---|---|
| Canaan Avalon Mini 3 | 37.5 TH/s / 800 W | 31 CZK | −65 CZK | +10 CZK | 1.64 CZK/kWh |
| Canaan Avalon Q | 90 TH/s / 1,674 W | 76 CZK | −125 CZK | +30 CZK | 1.88 CZK/kWh |
| ElphaPex DG Home 1 | 2.1 GH/s / 630 W | 26 CZK | −49 CZK | +9 CZK | 1.73 CZK/kWh |
Calculated as of 18 October 2026, excluding the pool fee (usually 1–3 %). The break-even point is the electricity price at which revenue just covers consumption. Home miners are built for quiet operation, not for the best efficiency – which is why data centres usually run other, more economical machines. Current figures for each model can be found on the quiet home mining miners page.
When mining at home makes sense
When the miner heats instead of an electric heater
An 800 W miner heats just like an 800 W electric heater. If you would heat with electricity in winter anyway, you pay the same amount – and the mining revenue is a bonus. With a heat pump this no longer applies. The full comparison is in the article Heating with an ASIC miner.
When you have surplus solar power
Feed-in prices for exported power in 2026 are often only 0.2–1 CZK/kWh. A home miner today mines roughly 1.6–1.9 CZK from one kilowatt-hour. When this makes sense and how to size the miner is described in the article Mining with surplus solar power.
When you mainly want to get to know mining
A small miner is a good way to try out a pool, a wallet and the settings before investing in a large machine. Bear in mind, though, that this experience costs a few dozen koruna a day.
Noise: which miner you can live with in a flat
| Machine | Noise according to the manufacturer | Where it fits |
|---|---|---|
| Avalon Mini 3 | 33–55 dB depending on mode | living room, study |
| Avalon Q | 45–65 dB | utility room, cellar, garage |
| DG Home 1 | about 50 dB | study, hallway, cellar |
| Classic ASIC (e.g. Antminer S21) | 70–80 dB | only outside living spaces or in a box |
For reference: 35 dB is a quiet library, 55 dB normal conversation, 75 dB a vacuum cleaner. A classic ASIC can be quietened in a soundproof box made by PC Praha, but even then it needs air intake and exhaust.
Heat: an advantage in winter, a problem in summer
All the electricity a miner consumes ends up as heat in the room. An Avalon Q at full power is therefore a 1.7 kW heater running non-stop. A small room quickly overheats in summer and the miner then reduces its own hashrate. Plan either to vent the warm air outside (window, ducting) or to run it in a more economical mode in summer.
Circuit breaker and socket: how much home wiring can handle
You can calculate the current easily: power in watts divided by 230 V. A standard socket circuit in a flat is protected by a 10 or 16 A breaker. For a continuous 24-hour load, allow a margin and don't use more than about 80 % of the breaker rating.
| Machine | Power | Current at 230 V | What it needs |
|---|---|---|---|
| DG Home 1 | 630 W | 2.7 A | a standard socket |
| Avalon Mini 3 | 800 W | 3.5 A | a standard socket |
| Avalon Q | 1,674 W | 7.3 A | a socket on a circuit without a kettle or washing machine |
| Antminer S21 | 3,500 W | 15.2 A | a dedicated circuit, 220–277 V power, ideally assessed by an electrician |
Don't use extension cables or multi-plug adapters for a continuous load. A warm socket or a tripping breaker is a sign that the circuit is overloaded.
Internet
A miner needs a stable connection, not a fast one – it uses only tens of MB of data a day. Connect large machines by cable. What to do during outages and why not to rely on Wi-Fi is explained in the article Internet for mining.
Mining at home or hosting in a data centre?
| Criterion | At home | Hosting |
|---|---|---|
| Electricity price | 4.5–6.5 CZK/kWh | from 1,13 Kč/kWh including management |
| Noise and heat | you deal with them, heat can be used for heating | not your concern, heat stays in the data centre |
| Supervision and service | up to you | monitoring and technicians in the data centre |
| Number of machines | 1–2, limited by the wiring | dozens or even hundreds |
| Control over the machine | immediate physical access | remotely, physically via the operator |
| Best for | the heating season, surplus solar power, trying it out | long-term mining at the lowest possible cost |
Both approaches can be combined: a quiet miner at home for the winter and a powerful machine in hosting. Locations, prices and availability are on the ASIC miner hosting page.
What next
- Want to mine at home? Browse quiet miners for home mining with revenue recalculated every hour.
- Want the lowest cost per kWh? Take a look at ASIC miner hosting in our data centres.
Sources
Frequently asked questions
How much electricity does a home miner use per month?
Do I have to report home mining to the distribution company or the authorities?
Is it worth mining at home on night-rate electricity?
Does a miner increase the risk of fire?
Can I later send my home miner to hosting?
This text was prepared with the help of AI. Facts, figures and procedures were checked by Yegor.
