Green Bitcoin: Miners Demand Cleaner Energy

Bitcoin's journey towards 100% renewables.

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The Green Bitcoin Theory believes that Bitcoin’s energy use is trivial in comparison to coin price or other industries. They postulate that bitcoin mining will become a major contributor to global renewable energy projects and R&D in the next 5 years.

Lower-cost renewables, combined with more efficient mining rigs, will drive inefficient fossil-fueled operations off the Bitcoin network. As a consequence, Bitcoin’s mining industry inches closer to 100% clean energy.

Here, we discuss our interpretation of the Green Bitcoin Theory. Then we provide considerations of the dynamics of the hardware industry and Bitcoin’s energy consumption. This article will be the first of a series of three, profiling Bitcoin’s current energy use.

Green Bitcoin Theory

The Green Bitcoin Theory was released in 2020 by the Frankfurt School Blockchain Center. The authors are Philipp Sandner, Daniel Wingen, Stefanie von Jan, and Andreas Straub. 

Preliminary insights reveal that renewables and excess energy facilitate cheaper kWh rates than conventional coal and gas. Also, utility companies intentionally waste excess energy. This is to prevent overload, especially where power fluctuates due to day-night consumer cycles or weather (i.e. intermittent rain, wind, sun). 

Thus, the group stipulate that economically driven bitcoin mines naturally gravitate towards surplus green or waste electricity supplies. Less ¢/kWh consumption equals greater profitability. But, due to varying ASIC efficiencies and sources of power, the theory assumes that current miner demographics follow a bell curve distribution. 

The miners to the right of the white curve produce bitcoins at high costs. This puts them at risk of being pushed off the network. Miners to the left produce coins with higher profit margins. This secures their market edge.

Green Bitcoin Theory interpretation by Miner Daily
According to the theory mining operations with high OPEX and low profitability leave the industry, potentially resulting in Bitcoin’s PoW shifting to only renewables. 

Shifting the Curve

Sandner et al. hypothesize that electricity supplied to the Bitcoin network through cheaper, greener alternatives should steadily increase. To achieve this, hardware efficiency, renewable R&D, and energy infrastructure will follow suit. 

Companies with access to low-cost electricity and more efficient mining rigs will drive higher OPEX companies out of business. Therefore, it may be reasonable to argue that this dynamic results in an overall shift to cleaner energy sources, visualized by the skewed yellow line.

The group is working on empirical evidence to back the theory, see the video at the end of this article.

Some Considerations

In most circumstances, renewables like water, wind, geothermal, natural gas, and solar, are cheaper to produce than conventional fossil-fueled energy sources. As a result, bitcoin mines, renowned to chase the lowest-cost electricity, are 76% clean power backed.

For instance, Russia, China, Iceland, and North America are prodigal with hydroelectric bitcoin mines. Combined these five countries mine around 80% of all bitcoins

Dirty Miners

Whilst the Green Bitcoin hypothesis lays out a hopeful outlook for cleaner bitcoin mining companies, lionhearted and independent bitcoin miners do not give up operations when faced with lower profitability. They seek other options.

For example, some relocate older generation gear to countries slow to adopt decarbonization policies. Thereby running inefficient rigs on government subsidized, or bootlegged fossil-fuel power sources. This is seen in parts of Iran, South America, India, and Southeast and mainland Asia. 

Green Bitcoin Theory 2 Miner Daily
Until global carbon decarbonization is achieved, it may be both cheaper and more expensive to mine bitcoins with fossil fuels.

For these players, power sources are dirtier and cheaper than renewable options. Additionally, acquisition of older, inefficient ASICs provide miners with lower entry price to the market. Yet, operations are risky due to heists, seizures, or difficulties maintaining the hardware.

So, in certain geographical locations, the cost of mining a bitcoin using fossil fuel is cheaper than using renewables. This results in a slightly different x-axis, until global decarbonization is achieved. However, non-renewables still only represent a small amount of the network at each end of the distribution spectrum.

Market Cycles Affect Hashrate

Furthermore, bull-bear market cycles and bottlenecks in ASIC manufacturing run ‘efficient operations’ out of business. This is because in a bull market new actors purchase mining gear at premium prices. Some large companies rely on financing. When profitability declines, companies may be pressured to liquidate or go bankrupt. 

Lastly, delays in ASIC production and efficiency improvements hamper companies from executing timely equipment upgrades to stay ahead of the curve. As a result, the Bitcoin network has slowed growth, and secondhand sales of less efficient machines have flourished. This results in slowing growth of Bitcoin’s total energy consumption, which will be examined in the next article.

Summary

So, we must consider that bottom feeders, who consume larger amounts of dirtier energy to mine bitcoins, may not disappear from the network until global decarbonization is actualized. But, this group accounts for small portion of the network and bitcoins mined. Additionally, inefficient machines are used on a larger scale during market bull runs when bitcoin mining profitability increases considerably.

Stay tuned for the next article where we mine deeper knowledge of ASIC efficiency and the manufacturing industry. ⛏ The third article will investigate data center mining, and China’s shifting energy demographic.

Jan 2021 update for Green Bitcoin Theory:

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24/7 PoW hasher. Working as part of an independent and global miner group. Together we explore the Bitcoin network and ASIC hardware industry.