Bitcoin Reward Halves in 2028: Will Mining-Based Heating Become More Expensive in Finland?

Finland’s SunBit currently operates 30 Bitcoin-mining heating systems that reuse waste heat for homes, but its model faces a stress test from the 2028 Bitcoin halving, when the block reward will be cut in half. SunBit’s calculation implies Bitcoin would need to reach roughly $131,000 for the mined BTC to cover electricity costs after the halving. The setup matters because it ties household heating economics directly to Bitcoin’s price and network reward schedule rather than to conventional energy markets alone. Watch Bitcoin’s price into 2028, mining difficulty and electricity costs in Finland, and whether SunBit expands beyond its current 30 installations, including in Nokia.