Bitcoin Solo Mining 2026 — Practical Guide and Chances of Success Calculated
Solo Mining is the original form of Bitcoin mining: You mine alone, without joining a large pool, and in case of success, you keep the entire block reward of 3.125 BTC. Sounds like winning the lottery? It is — mathematically speaking, quite literally. In this guide, we dive deep into the practice: How does solo mining work technically, which pool URLs and Stratum addresses do you need, how do you calculate your true probability of success, and which setup errors cost you hashrate without you even noticing.
If you don't yet know what Bitcoin mining fundamentally is, first read our Bitcoin Mining Beginner's Guide. This article assumes you know the basics.
Solo Mining vs. Pool Mining — the Mathematical Truth
In classic Pool Mining, thousands of miners join a common pool. When a pool member finds a block, the reward is distributed proportionally to all pool members — relative to their contributed hashrate. The result: regular, small payouts, low variance, predictable returns.
In Solo Mining, you try to find a block alone. If it works, the entire reward belongs to you — no pool fees, no splitting. If it doesn't work, you get nothing. This is a pure all-or-nothing strategy.
| Criterion | Solo Mining | Pool Mining |
|---|---|---|
| Reward upon success | 3.125 BTC in full (~€190,000+) | Proportional to hashrate |
| Payout frequency | extremely rare, but maximum | regular, calculable |
| Pool fees | 0 % | 1–3 % |
| Statistical variance | extremely high (lottery) | low (calculable) |
| Ideal for | hobbyists, learners, lottery players | professional mining operations |
| Risk profile | maximum — can pay nothing for years | moderate — continuous cash flow |
The honest bottom line: Solo mining is mathematically only sensible in two scenarios. First, if you have a massive hashrate (several petahash), where the waiting time for a block is measured in days instead of decades. Second, if you don't care about the math and pursue solo mining as a hobby, learning project, or deliberate lottery — with tiny electricity costs under €3 per year.
How Solo Mining Works Technically
Even with "solo mining," your device usually connects to a server — a so-called solo pool. This seems contradictory at first but has a technical reason: Your miner constantly needs the current block header information from the Bitcoin network. Its own Bitcoin full node would consume around 700 GB of hard drive space and constant internet bandwidth. A solo pool takes this task off your hands.
The important difference from classic pools: With a solo pool, you keep the entire reward if you find a block. The pool only forwards the mining jobs to you but takes nothing from the reward. Some solo pools charge a small service fee (0.5–2%), while others, like the famous public-pool.io, work completely free of charge.
The Most Important Solo Pools 2026
-
public-pool.io — the best-known free solo pool. 0% fee, run by the Bitcoin community, perfect for hobby miners. Stratum URL:
stratum+tcp://public-pool.io:21496 -
solo.ckpool.org — the oldest public solo pool, founded in 2014. 2% fee, but extremely stable. Stratum URL:
stratum+tcp://solo.ckpool.org:3333 - solomining.io — commercial solo pool with additional statistics and web dashboard. 1% fee.
USB solo miners like the Nerdminer V2 are pre-configured for public-pool.io out of the box. So you don't necessarily have to choose a pool — it works directly out of the box.
Stratum Protocol — How Your Miner Communicates with the Pool
Communication between the miner and the solo pool takes place via the Stratum Protocol. Stratum is essentially the standard protocol for all Bitcoin mining since 2012. Process:
-
Establish connection: Your miner connects via TCP to the pool's Stratum URL (e.g.,
public-pool.io:21496). - Authentication: The miner sends its worker name — for solo pools, this is your Bitcoin address to which a potential block reward would be paid.
- Receive job: The pool constantly sends new mining jobs (block header data of currently open blocks) to the miner.
- Hash: The miner tries to find a valid hash for each job.
- Submit: If the miner finds a hash that meets the difficulty, it sends the solution to the pool — which verifies it and relays the block to the Bitcoin network.
The beauty of it: You don't need to know any of this to operate solo mining. Devices like the Nerdminer V2 handle the setup automatically — you just enter your Bitcoin address, everything else runs in the background.
The Math — How Likely Is a Block Find Really?
This is where it gets serious. Let's calculate exactly how often you would statistically find a block with different hashrates. Initial data (as of April 2026):
- Bitcoin network hashrate: approx. 620 EH/s (620,000,000,000,000,000,000 H/s)
- Blocks per day: 144 (one every 10 minutes)
- Blocks per year: 52,560
From this, the following expected waiting time results for various mining devices:
| Device | Hashrate | Share of Network | Expected Time for 1 Block |
|---|---|---|---|
| Nerdminer V2 | 250 KH/s | 4 × 10⁻¹⁶ | ~47,500 years |
| BitAxe Gamma | 1 TH/s | 1.6 × 10⁻⁹ | ~12 years |
| BitAxe Ultra (4 units) | 4 TH/s | 6.5 × 10⁻⁹ | ~3 years |
| Antminer S19 Pro | 110 TH/s | 1.8 × 10⁻⁷ | ~36 days |
| Antminer S21 | 200 TH/s | 3.2 × 10⁻⁷ | ~20 days |
Important for interpretation: These numbers are statistical expectation values. Solo mining is a random lottery — you can theoretically find a block in the first hour or never. The "47,500 years" for the Nerdminer V2 only means that, averaged over very long periods, a block falls once every 47,500 years. In reality, each hash attempt is independent — and the entire luck distribution is exponential.
Specifically: There have been several documented cases in recent years where hobby miners with tiny hashrates actually found a block. In January 2022, a solo miner with a single Antminer S9 unit found a block. In May 2024, a Nerdminer user with 250 KH/s scored a hit. Statistically, these events should happen every few thousand years — yet they happen every few months. This is exactly why the solo mining community continues to play along.
Setup Guide — Start Solo Mining in 4 Steps
Step 1: Prepare Bitcoin Wallet
You need a Bitcoin address to which a potential block reward would be paid. Important:
- SegWit addresses (bc1q...) are the recommended choice — low transaction fees, broad compatibility.
- Legacy addresses (1... or 3...) also work but are more expensive for later sending.
- Taproot addresses (bc1p...) are not supported by many solo mining pools like public-pool.io. If you enter a Taproot address, your miner will run, but would not receive a payout in case of a win.
For maximum security, hardware wallets like BitBox02 or Ledger Nano are recommended. Software wallets like Sparrow, Electrum, or BlueWallet also work.
Step 2: Select Solo Mining Hardware
For hobby solo mining, three classes of devices are currently relevant:
- USB Solo Miners (€40-80): Mini devices like the Nerdminer V2 or NerdNOS. Low hashrate, minimal power consumption, lottery character.
- BitAxe and Open-Source Miners (€150-250): Higher hashrate, firmware usually needs to be flashed yourself, small fan.
- Used Professional ASICs (€300-1,500): Antminer S9, S17 or S19. High hashrate, but loud, hot, and power-hungry — not for the living room.
A complete overview including hashrate, power consumption, and price can be found in the USB Bitcoin Miner Comparison 2026.
Step 3: Set Up Device
Setting up a USB solo miner usually takes 3-5 minutes:
- Connect the device to power via USB-C (standard phone charger is sufficient).
- Connect to the device's temporary Wi-Fi (e.g., "NerdMinerAP").
- In the configuration menu, select your home Wi-Fi and enter the password.
- Enter your Bitcoin address.
- If necessary, set the pool URL (pre-configured on many devices).
- Save, device restarts, starts hashing.
A step-by-step guide with screenshots can be found in our Nerdminer V2 Setup Guide.
Step 4: Check and Optimize Hashrate
After startup, the OLED display of your solo miner shows the current hashrate. Expected values:
- Nerdminer V2 with firmware 1.8.3: 230-250 KH/s
- Nerdminer V2 with older firmware 1.6.x: 150-180 KH/s
- BitAxe Gamma: 0.9-1.1 TH/s
If your hashrate is significantly below the expected value, the firmware is usually outdated. An update to the current version typically brings 30-40% more performance — without hardware changes. Instructions for this in the Firmware Update Guide.
Common Solo Mining Setup Errors
- Incorrect wallet address entered. Taproot addresses do not work with most solo pools. Use SegWit.
- Targeted 5-GHz Wi-Fi. USB solo miners only support 2.4-GHz Wi-Fi. Activate a separate 2.4-GHz band on the router.
- Outdated firmware. With devices without a firmware update, you lose up to 40% hashrate. Always check for updates.
- Incorrect Stratum URL. If you use a custom pool, carefully check the spelling and port.
-
Forgot worker name. Some pools require a worker name (e.g.,
BTC_ADDRESS.WorkerName) — without it, the miner runs but does not appear in the pool dashboard. - Didn't monitor the mining pool dashboard. Some devices show "Mining" even though the pool connection has actually dropped. Regularly check the solo pool dashboard to see if your hashrate is arriving there.
When Is Solo Mining Economically Viable?
The honest answer: Practically never — unless you run it as a deliberate lottery ticket with minimal costs. With a hobby device under 1 watt and about €2.80 in annual electricity costs, you can play along for years without loss. If you don't find a block in 50 years, you've spent a total of €140. If you find one, you've won €190,000+ in the lottery.
With larger solo mining setups (BitAxe and higher), the math becomes less favorable. Power consumption of 15+ watts means €40+ in annual costs, and the probability of a block remains astronomical. Financially, pool mining is better in that case — even if the "entire block or nothing" allure disappears.
Frequently Asked Questions About Solo Mining
Do I need my own Bitcoin Full Node for solo mining?
No, in most cases not. Solo pools like public-pool.io take on the task of providing the current block headers. If you want to do without a pool entirely, you actually need to run a full node — which means around 700 GB of storage, constant bandwidth, and more technical setup.
Can I run multiple solo miners in parallel?
Yes. You can run any number of USB solo miners with the same Bitcoin address. Their hashrates add up mathematically, each unit increases the chance of winning. In case of a win, the entire block reward goes to the miner who actually found the block.
What pool fee does public-pool.io charge?
Zero point zero percent. public-pool.io is a free, community-run project. If a block is found, the entire reward goes directly to the miner's Bitcoin address.
How long does a solo miner have to run to be statistically meaningful?
For hobby devices under 1 watt: continuously. Electricity costs are so low that it makes no economic difference whether it runs or not. An Antminer S21, however, should only run if the expected reward clearly exceeds the electricity costs.
What happens if I actually find a block?
The solo pool forwards the block to the Bitcoin network. As soon as other miners confirm the block (typically after 6 confirmations, about an hour later), the entire block reward of 3.125 BTC plus transaction fees appears in your wallet. But you don't automatically get rich — you still have to pay taxes on the income.
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