Cryptocurrency mining dims in 2025 as energy costs soar 15% globally, per web trends, with Bitcoin’s 700 EH/s hash rate gulping 0.5% of world energy. Returns shrink—$50K daily per 1 PH/s, down 20% from 2024—despite 30% efficient ASIC gains. Coal-heavy regions lag, while green energy (solar up 25%) offers hope, but 5-7% annual ROI barely tempts. The market’s whisper, a fading echo, questions mining’s glory—centralized pools (99% dominance) defy decentralization’s dream. This spectral decline, a fragile thread, hinges on energy’s cost curve; investors face a gamble where innovation’s spark fights a dimming, resource-hungry reality in this blockchain crucible.