Bipin Patel from Flexionics runs 14 MW in Sweden with Bitcoin mining treated as flexible energy load, not just a 24/7 race for uptime. The number that stuck with me: negative 2.67 cents/kWh net energy cost after capacity revenue. Roughly 60% of their revenue comes from frequency regulation and 40% from hashing, which makes older ASICs and lower CAPEX much more interesting than the usual efficiency-only model. This is the practical side of Bitcoin mining for grids: absorb excess power, switch off when needed, and keep the economics tied to real energy markets. Watch the 41-min conversation: https://www.youtube.com/watch?v=LBYCO5FDEG0