Riot Blockchain, Inc. (NASDAQ: RIOT) ("Riot" or the "Company"), one of the few Nasdaq listed public cryptocurrency mining companies in the United States, announced the purchase of 3,000 next generation Bitmain S17 Pro Antminers for approximately USD $5 million from BitmainTech PTE. LTD. ("Bitmain"). This upgrade was funded from Riot's available cash on hand.
The latest generation of Bitcoin ("BTC") Application-Specific Integrated Circuit ("ASIC") miners from Bitmain are markedly more cost efficient, estimated from product specifications at approximately a 50% improvement in hardware power efficiency, compared to the S9 miners currently in use by Riot. As previously reported Riot's gross margin percent, computed as mining revenues in excess of cost of revenues (exclusive of depreciation and amortization), was 14% in the three-month period ended September 30, 2019. The new generation miners are anticipated to generate approximately 440% of the S9's hashrate while only consuming an estimated 220% of an S9's electricity usage. This will allow Riot to significantly increase its operating hashrate at the Oklahoma City mining facility with fewer total miners using the same or less total electricity.
Riot estimates aggregate operating hashrate at the Oklahoma City mining facility, assuming full utilization of the facility's current total 12 megawatt ("MW") available electric supply and deployment of the 3,000 next generation miners supplemented with the balance of S9s continuing to run using remaining available power, would be approximately 225 petahash per second ("PH/s"). This would represent an estimated 200%+ increase over Riot's present average mining hashrate. Riot anticipates that the 3,000 new miners, will represent approximately 70% of the total current mine capacity, and are expected to be fully deployed early first quarter 2020. Pending future actual power costs and Bitcoin network economic conditions, it is expected that a portion of the existing S9 miners will continue to be operational in order to maximize capacity until, and if, additional next generation miners may be acquired to replace them.
Riot's 107,600 square foot Oklahoma City mining facility has been in operation since early 2018. Riot has mined over 1,820 newly minted Bitcoin through the quarter ended September 30, 2019, in addition to lesser quantities of Litecoin and Bitcoin Cash. With this acquisition, Riot has reinforced its confidence and focus in Bitcoin.
Riot's Oklahoma City mining facility's current electric costs are variable based upon peak demand. Riot is notified of hourly demand billing rates in advance and in order to be strategic with its operational costs, Riot curtails mining activities to reduce electric consumption if there are periods when incremental electricity charges would exceed estimated revenue production. For the billing month of October 2019, direct electricity costs incurred averaged $0.0275 kWh with an approximate range of $0.01 to $0.07.
The Board of Directors and Management of Riot are very pleased to be in a position from a financial point of view to take advantage of this exciting new technology at a time when the manufacturer has recently significantly reduced the cost of the miners. While cryptocurrency mining continues to have challenges, including price volatility of Bitcoin, the opportunity to acquire significant additional net hashrate capacity on a very cost-effective basis was determined to be compelling. The decision was further enhanced given Riot's recent funding from its 2019 ATM Offering of common shares with no warrants or other rights and at prices appreciably higher than the current market. As previously reported, the Company's cash and digital asset balance as of September 30, 2019 totaled $18.3 million, with no long or short-term secured debt.
About Riot Blockchain
Riot Blockchain is focused on building, operating, and supporting blockchain technologies. Its primary operations consist of cryptocurrency mining, targeted development of a cryptocurrency exchange, and the identification and support of innovations within the sector. For more information, visit http://www.RiotBlockchain.com/.
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