CleanSpark Mined 629 BTC in September, Sold 445 Coins for $48.7 Million, and Growd Vault to 13,011 BTC, Despite Record Energy Costs and Tariff Risks.
CleanSpark Holds 13,000 BTC, Shares Soar 23% in a Week
American miner CleanSpark reported that it ended September with 13,011 BTC in its vault, increasing efficiency by 26% year-on-year.
- September Mining: 629 BTC (+27% YoY).
- Sales: 445 BTC for ~$48.7 Million (average price $109,568).
- Average Hashrate: 45.6 EH/s.
The company has been selling a portion of its mining output every month since April to become financially self-sustaining. In August, it raised $60.7 million from the sale of 533.5 BTC and opened an institutional trading desk for bitcoin transactions.
Market reaction
CleanSpark shares on the Nasdaq rose 5.28% on Friday and more than 23% for the week, according to Yahoo Finance.
The combined market capitalization of the 15 largest public miners reached a record $58.1 billion in September — more than double the $19.9 billion in March.
Industry challenges: Tariffs and complexity
Despite growing investor interest, the industry faces serious risks:
- Tariffs: In August, U.S. Customs said some of CleanSpark’s miners were made in China. Potential liabilities — up to $185 million
- Iris Energy (IREN) is simultaneously challenging a separate tariff dispute for $100 million.
- Tariffs: Equipment from China is subject to an effective tariff of 57.6%, and equipment from Indonesia, Malaysia and Thailand — 21.6%.
- Network difficulty: Bitcoin reached record levels of difficulty in September-October, increasing energy and computational resources for the same amount of mining.
Conclusion
CleanSpark shows resilience — the company is increasing efficiency and capitalization even in an environment of tariff pressure and record costs. But for miners in the US, tariff restrictions and rising energy costs remain key challenges, which could limit profitability in the coming quarters.
Related: CleanSpark secures $100 million from Coinbase for mining and HPC
