Finnish mining farms have begun heating homes using the heat they generate.
Date: 2025-10-23 Author: Oliver Abernathy Categories: BUSINESS
Hashlabs, Terahash, MARA, and MinersLoop have begun transferring excess heat from water-cooled ASIC mining rigs to city heating systems. This approach not only reduces emissions and energy loss but also makes the mining process more sustainable.
Hashlabs' CEO said his company already provides heat for an entire small town with a population of approximately 50,000. The company is currently preparing to launch its sixth mining farm, which will significantly increase the amount of heat produced. According to the expert, Finnish mining companies already provide heat for approximately 140,000 residents of the country, or approximately 2.5% of the population.
Hashlabs' CEO emphasized that Bitcoin mining should not be viewed solely as an energy-consuming process. According to him, modern ASIC miners are capable of heating water in cooling systems up to 70°C, making them an excellent source of waste heat. This energy can be used not only for heating homes but also for heating swimming pools and industrial processes, such as drying wood.
This approach not only helps reduce heating costs but also the carbon footprint of mining, which is often criticized for its high energy consumption. Finland, where most of its electricity comes from renewable sources, was one of the first countries to implement such technologies on an industrial scale.
Interestingly, while Finland is looking for ways to make the crypto industry more sustainable, other regions are moving in the opposite direction. For example, authorities in the Canadian province of British Columbia recently decided to completely ban new mining projects from connecting to the grid of the state-owned energy company BC Hydro. This means that miners' access to affordable hydroelectric power in the region will be permanently restricted.
Experts believe Finland's experience could serve as a model for other countries seeking to combine digital development with environmental responsibility. Using heat from mining farms in district heating systems could be one step toward more efficient and sustainable energy use in the digital age.
