Maximilian Obwexer had an issue.
He was heating his dwelling in Austria with standard heating oil, and it was costly. A tinkerer by nature, and a former engineer having labored on hydropower crops, he was looking for a greater strategy to warmth his dwelling.
After many rounds of experimentation and having delved down the Bitcoin (mining) rabbit gap, three years in the past he based an organization dedicated to the hassle. His firm, 21energy, makes well-balanced, sturdy, and extremely stunning (and extremely quiet!) miners for dwelling use. The early fashions of Ofen 1 boasted as much as 10 TH/s, whereas the premium mannequin might attain, at prime pace and making loads of noise, 40 TH/s. Having scaled up manufacturing, hiring 12 new staff solely this 12 months and launching the brand new Ofen 2 (35-42 TH/s), the Bitcoin heater comes within the model of a standard radiator — powered by Bitcoin. And sure, you may solo mine with this bitcoin heater… or be a part of whichever pool you assume is greatest.
“Bitcoin heaters are decentralized grid balancing — at dwelling!” he proclaimed on stage in Helsinki on Friday earlier than a whole lot of curious faces within the viewers on the inaugural Nordic Bitcoin convention BTCHel. Refreshingly, he spent most of his presentation not promoting his glorious merchandise or explaining his story in bitcoin, however on the various troubles afflicting the European grid.
Europeans are beholden to foreigners for importing power. Its present electrical energy producers — legacy coal, fuel and hydro — are more and more requested to show off their provide to the grid, in favor of the ever-more current wind generators and photo voltaic panels. Fossil-fuel-based era produces CO2 emissions in addition to particles within the rapid atmosphere, however its proposed replacements push dynamic and uncontrollable electrical energy era onto the grid. At peak provide, even renewable power suppliers are requested by grid administration to curtail or wind down manufacturing; there may be merely no one to take the surplus electrical energy, nowhere to place it
That is clearly dangerous in that it wastes potential electrical energy that might have been used, however even worse is that it makes the funding calculations for renewable power buyers worse. Not unrelated, households in Europe pay exorbitant charges for his or her electrical energy… and on prime of that, heating generally is sort of costly.
While you put all of these elements collectively, it’s just like the outdated world is screaming out for Bitcoin mining. Obwexer agrees, “It’s a no brainer — even in the event you don’t like or perceive Bitcoin,” he tells me, standing subsequent to his shiny inexperienced sales space and radiators holding the Expo corridor in Helsinki actual toasty.
Certainly, a big portion of his shopper base are “photo voltaic guys” — devoted local weather change activists eager to do one thing hands-on to de-fossilize their very own power use. Whereas it’s not precisely the primary group you concentrate on being concerned about Bitcoin, “The economics simply make sense,” Obwexer tells me.
In a latest podcast interview with Knut Svanholm and Luke de Wolf, two of the co-organizers of BTCHel, Obwexer remarked that “Finland is admittedly on the forefront of bitcoin heating and bitcoin district heating”:
“Europe wants Bitcoin mining so badly, with the excessive volatility within the electrical energy grids… we don’t must concern the politicians an excessive amount of, as a result of… they already wrote it down — they simply don’t see that they wrote Bitcoin mining in every single place.”
On stage in Helsinki, he confirmed one of the vital essential graphs in the whole economics and power debate, which underlines exactly how essential power is for the well-being and flourishing of a society. “If you need a clear, wealthy, wholesome society you want plenty of energy.”
by way of: Todd Moss, Eat Extra Electrons
Up subsequent for Obwexer and his workforce at 21energy is contributing to versatile load shedding on a grid degree. Placing cellular miners in a truck and take manufacturing stress off, e.g., hydro crops, is an ideal use case for Bitcoin mining: As an alternative of being requested to ramp down manufacturing due to an overloaded grid, they’ll divert the electrical energy stemming from their water stream to Bitcoin miners — which additionally adjustments their response time from minutes to seconds.
Meet 21energy subsequent week at #BTCHEL – the First Massive-Scale Bitcoin Convention within the Nordics!
Be a part of us at our sales space and meet our workforce
Find out how we remodel electrical energy into heat & Bitcoin
Don’t miss talks from Harald, Maximilian & Lukas on Bitcoin mining,… pic.twitter.com/juBRMGWvWh
— 21energy (@21energy_com) August 7, 2025
Basically, utilizing purpose-built or rebuilt Bitcoin miners for heating your house is the obvious strategy to decentralize mining — particularly since dwelling miners are a lot much less prone to the cutthroat economics of Bitcoin mining that, e.g., giant mining farms are.
Whereas fixing a number of real-world power issues directly, Obwexer and his workforce at 21energy are doing exactly that — “From Tyrol to the World.”
“I’m tremendous bullish on Bitcoin mining in Europe,” Obwexer concluded.
This submit Bitcoin Heating Up: House Bitcoin Mining is Going To Warmth Europe first appeared on Bitcoin Journal and is written by Joakim Ebook.
