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Bitmain Unveils Antminer S21 and S21 Hydro, Focusing on Energy Efficiency and Sustainability

Bitmain's new miners hint at a sustainable crypto-mining future emphasizing energy efficiency and renewable sources.

Sun, 24 Sep 2023, 23:03 pm UTC

Bitmain, a leading producer of cryptocurrency mining hardware, unveiled its highly anticipated Antminer S21 and S21 Hydro models at the World Digital Mining Summit in Hong Kong on September 22. These new models come with impressive specifications aimed at addressing the growing importance of energy efficiency in the mining industry.

The Antminer S21 boasts a hash rate of 200 terahashes per second with an energy efficiency rating of 17.5 joules per terahash, while the S21 Hydro delivers 335 terahashes per second at an even more efficient rate of 16 joules per terahash. These efficiency improvements are significant, especially when compared to older models that operated at over 20 joules per terahash.

With increasing electricity costs and the anticipated reduction in Bitcoin supply in April 2024, miners are shifting their focus towards energy-efficient operations. Many miners are also integrating renewable energy sources into their mining operations to ensure sustainability.

The roundtable discussions at the summit emphasized the importance of renewable energy sources in the post-2024 Bitcoin mining landscape. Nazar Khan, COO of Terrawulf, highlighted ongoing efforts to reduce carbon emissions across the energy supply chain, making Bitcoin mining part of the broader sustainable energy narrative.

As the Bitcoin supply decreases, miners are faced with the challenge of sourcing energy more sustainably or adopting more energy-efficient mining machines to remain profitable. Bitmain's Antminer S21 models are seen as potential game-changers due to their impressive efficiency, potentially redefining cryptocurrency mining.

Bitmain is also focusing on sustainability by introducing its Carbon Neutral Certificate, which rewards eco-friendly mining operations. Haitian Lu, a professor from the Hong Kong Sustaintech Foundation, countered critics who claim that Bitcoin mining exacerbates environmental issues, stating that Bitcoin mining actively promotes the adoption of renewable energy sources.

Overall, the launch of Bitmain's Antminer S21 and S21 Hydro highlights the industry's commitment to energy efficiency and sustainability in the face of changing market dynamics.

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