Bitcoin has been a topic of much debate, but there’s one undeniable fact: its environmental footprint is significant. This year, the machines that mine for bitcoin have consumed 146 terawatt hours (TWh) of electricity. To put that in perspective, that’s more electricity than Sweden uses in a year.
As bitcoin prices soar to around $100,000, interest in mining is inevitably growing. However, amid this surge, one company, Mara Holdings, is taking a step toward sustainable mining with its recent acquisition of a wind farm in Texas.
Mara’s plan is to generate bitcoin primarily during windy days, projecting that they could operate about 30% of the time. This method will allow them to produce what could be considered “green” bitcoin, resulting in remarkably low carbon emissions.
From a financial viewpoint, this might not be the most sensible move for many in the mining realm. The significant investment in mining hardware often requires maximizing output to spread costs effectively. Given the high bitcoin prices and relatively low electricity costs in the U.S., continuously running these operations typically makes more sense.
For context, Aurora Energy Research reports that current mining setups yield 12.9 bitcoin per year for every 8760 MWh of electricity, translating to a value of $147 per MWh at the $100,000 price point of bitcoin, while average wholesale electricity prices in the U.S. sit around $40/MWh.
Mara’s wind farm is situated in a remote area with limited demand for electricity, which likely allowed them to purchase it at a lower price. Additionally, they are using older, less efficient mining equipment. Although this equipment may not be the most energy-efficient, it becomes viable since the energy costs are close to zero.
Although Mara plans to halt mining when the wind isn’t blowing, there’s a possibility they might supplement their energy needs with traditional electricity sources when rates are favorable. This raises the question of whether there’s a true demand for green bitcoin in the market.
While Mara seems to have carved out a profitable niche with its green bitcoin approach, the opportunities to acquire struggling power plants for mining are likely limited. Nonetheless, areas in Texas and beyond where renewable energy production exceeds demand present promising situations for similar part-time mining operations with older equipment. However, this strategy may not be easily replicable everywhere, making it a unique advantage for Mara.