September of 2023 was a great month for Bitcoin mining companies. Three firms, CleanSpark, Riot Blockchain, and Marathon Digital Holdings, all reported record outputs. Kraken also witnessed a 5-year ATH of BTC inflow and a 506.06M hash rate spike in mid-September.CleanSpark mined 643 BTC in September, bringing its total BTC holdings to 2,240 and making it their most profitable quarter and fiscal year on record. Riot Blockchain mined 362 BTC, largely due to a deal struck with ERCOT, Texas’ electric grid, which paid out over $13 million in energy credits, worth over 500 BTC at current prices.Marathon Digital Holdings produced 1,242 BTC during September, bringing its Year-to-Date total to 8610. The firm increased its monthly average operational hash rate by 20%, and achieved a record monthly share of miner rewards at 4.3%. Marathon is now evaluating multiple opportunities for its next 5 exahashes of hash rate capacity, including international locations with low-cost renewable energy. However, the firm did manage to mine an invalid block due to an error in arranging its Bitcoin transactions.

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Information	Details
Geography	North America
Countries
Sentiment	positive
Relevance Score	8
People	Mashinsky, MarathonDH, ZachKBradford, Marathon Digital Holdings, Zach Bradford
Companies	CleanSpark, ERCOT, Riot Blockchain, Kraken, Marathon Digital Holdings
Currencies	US Dollar, Ethereum, ercot, Bitcoin, British Pound
Securities	None