# SunBit Says 30 Bitcoin Mining Heating Systems Are Operating By John Kim Canonical URL: https://www.tokenpost.com/news/business/52414 Published: 2026-11-09T16:17:15.000Z Updated: 2026-11-09T16:17:15.000Z Section: Business > Its September model shows a €400 difference between mining revenue and heating electricity costs before equipment purchases; listed system prices range from €14,500 to €22,300 plus VAT. Finnish company SunBit says 30 Bitcoin mining-based heating systems are operating, tying household heating economics to mining revenue and the electricity consumed by the machines. All but one are in Finland. SunBit’s examples include a home in Nokia that replaced district heating and a Kotka household using a miner as its main heat source while keeping an oil boiler for backup. SunBit’s Bitcoin Boiler uses liquid-cooled miners and transfers their heat into a water-based heating system. One miner is rated for 5.3 kilowatts of heating output, while a model holding two is rated for 10.6 kilowatts. An outdoor unit releases heat the property cannot use. In a model based on September 2026 market conditions, SunBit assumes a home needs 20,000 kilowatt-hours of heat annually. The example puts electricity at €0.11 per kilowatt-hour, producing an annual heating electricity cost of €2,200, and mining revenue at €0.13 per kilowatt-hour, or €2,600. The €400 is a modeled difference between mining revenue and heating electricity costs, before the system’s purchase cost. SunBit lists typical system prices of €14,500 to €22,300 plus VAT. The proposed financial advantage comes from mining revenue, not lower electricity use. For the same annual heat demand, SunBit estimates its boiler would use 20,000 kilowatt-hours of electricity, compared with about 7,100 kilowatt-hours for an air-to-water heat pump. In a separate calculation for one miner and a particular electricity bill, SunBit estimates that Bitcoin would need to be just under $70,000 to cover operating electricity costs. The calculation excludes the equipment purchase cost and holds network computing power fixed. SunBit founder and CEO Elmeri Suomi said, “the economics depend on Bitcoin price and network difficulty.” Mining heat is also used in larger systems. MARA had two heat-reuse pilots in Finland by the time of its 2024 annual report, in communities with a combined population of about 80,000. Canaan’s [Nordic mining heat-recovery facility]() serves about 2,800 homes. SunBit estimates a three- to six-year payback for its systems. Bitcoin’s next subsidy halving is estimated for 2028, when the new-coin reward per block would fall from 3.125 BTC to 1.5625 BTC. ## Links in this article - [Nordic mining heat-recovery facility](https://www.tokenpost.com/news/business/32971)