# 21energy

> 21energy produces Bitcoin heaters made in Austria for private and industrial use. Click here and discover the Austrian start-up brand.

Generated by Yoast SEO, this is an llms.txt file, meant for consumption by LLMs.

## Pages
- [Bitcoin Solo Mining Calculator](https://21energy.com/pages/bitcoin-solo-mining-calculator)
- [Frequently Asked Questions](https://21energy.com/pages/frequently-asked-questions)
- [Bitcoin Mining Glossary](https://21energy.com/pages/bitcoin-mining-glossary)
- [Bitcoin Halving Countdown](https://21energy.com/pages/bitcoin-halving-countdown)
- [Central Heating](https://21energy.com/pages/central-heating)

## Blog posts
- [What Is Proof of Work? Bitcoin's Engine Explained](https://21energy.com/blogs/learn/what-is-proof-of-work)
- [The Bitcoin Halving, Explained Simply](https://21energy.com/blogs/learn/bitcoin-halving-explained)
- [What Is Crypto Mining? A Plain-English Guide](https://21energy.com/blogs/learn/what-is-crypto-mining)
- [What Is a Mining Pool? And Should You Join One?](https://21energy.com/blogs/learn/what-is-a-mining-pool)
- [How to Mine Bitcoin: A Beginner's Guide](https://21energy.com/blogs/learn/how-to-mine-bitcoin)

## Blogs
- [News](https://21energy.com/blogs/news)
- [Learn](https://21energy.com/blogs/learn)
- [Press](https://21energy.com/blogs/press)

## Products
- [Bitmain Antminer S19 86 TH](https://21energy.com/products/bitmain-antminer-s19-1)
- [Ofen 2 (B-Stock)](https://21energy.com/products/ofen-2-b-stock)
- [Premium Stand (Ofen 2 & Ofen 2 Pro)](https://21energy.com/products/ofen-2-premium-stand)
- [Ofen 2 Pro](https://21energy.com/products/ofen-2-pro)
- [Ofen 2](https://21energy.com/products/ofen-2)
- [Bitmain Antminer S19k Pro](https://21energy.com/products/bitmain-antminer-s19k-pro)
- [Test Product  2](https://21energy.com/products/test-product-2)
- [Bitmain Antminer S19 EXP Hydro 251TH](https://21energy.com/products/bitmain-antminer-s19-exp-hydro)
- [Bitaxe 603 Gamma 1.54 TH](https://21energy.com/products/bitaxe-603-gamma)
- [S19 Silent Kit](https://21energy.com/products/s19-silent-kit)

## Collections
- [Products](https://21energy.com/collections/all)
- [Bitcoin Miner & ASIC Miner](https://21energy.com/collections/bitcoin-miner)
- [Bitcoin Mining Equipment](https://21energy.com/collections/bitcoin-mining-equipment)
- [Deals on Bitcoin Miners & Bitcoin heaters](https://21energy.com/collections/sales)
- [Bitcoin Heater](https://21energy.com/collections/bitcoin-heater)

## Policies
- [Contact](https://21energy.com/policies/contact-information)
- [Legal notice](https://21energy.com/policies/legal-notice)
- [Privacy policy](https://21energy.com/policies/privacy-policy)
- [Refund policy](https://21energy.com/policies/refund-policy)
- [Shipping](https://21energy.com/policies/shipping-policy)
- [Terms of service](https://21energy.com/policies/terms-of-service)

## Optional
- [Sitemap index](https://21energy.com/sitemap.xml)