The world of cryptocurrency mining experienced significant shifts and developments throughout 2020. From Bitcoin’s third halving to the explosive growth of Ethereum’s decentralized finance (DeFi) ecosystem, miners and mining operators navigated a rapidly evolving landscape. This analysis offers a comprehensive review of the major trends, economic outputs, and key players that defined the mining sector last year.
An Overview of Crypto Mining in 2020
Last year was marked by several pivotal events for the crypto mining industry. Bitcoin successfully underwent its third halving event, a significant milestone that reduced block rewards and initially created uncertainty before rising prices helped the industry stabilize. In addition, other major cryptocurrencies, including Bitcoin Cash (BCH), Ethereum Classic (ETC), and Zcash (ZEC), also completed their own halving events.
Perhaps the most transformative trend was the rise of Ethereum-based DeFi applications. This not only drove up the value of ETH but also significantly increased mining activity on the Ethereum network. As a result, Ethereum mining emerged as a major force alongside Bitcoin, contributing substantially to the total mining economy.
Another notable development was the successful Nasdaq listing of Ebang International, following in the footsteps of Canaan, signaling growing interest from traditional capital markets in crypto mining infrastructure.
Energy Consumption and Industry Scale
Energy consumption is a critical metric for understanding the scale and environmental impact of crypto mining. According to data from Digiconomist, Bitcoin’s energy usage remained relatively stable throughout the year, with an annual increase of approximately 6.37%. The highest estimated energy consumption for Bitcoin mining reached 77.78 TWh, comparable to the total energy usage of Chile. During the brief period following the halving, energy consumption saw a moderate dip before recovering in early June.
Ethereum mining witnessed far more dramatic growth. Fueled by the DeFi boom, its energy consumption rose from 8.11 TWh at the beginning of the year to 14.64 TWh by year-end—an 80.52% increase. At its peak, Ethereum’s energy consumption was equivalent to that of Tunisia and roughly one-fifth of Bitcoin’s highest usage.
Economic Output and Revenue Streams
The total output value of the Bitcoin mining industry in 2020 was approximately $50.12 billion, a slight decrease of 3.78% from the previous year. In contrast, Ethereum mining generated around $26.90 billion, representing substantial growth.
A remarkable shift occurred in August and September, when Ethereum’s monthly output temporarily surpassed Bitcoin’s. In September, Ethereum miners earned an estimated $489 million—$162 million more than Bitcoin miners during the same period, a difference of nearly 49%.
Revenue composition also differed significantly between the two networks. Bitcoin mining revenue remained largely dependent on block rewards, though transaction fees grew in importance. Total Bitcoin transaction fees reached $326 million, a 108.97% year-over-year increase. Following the halving, the average daily fee rose to $1.24 million, 4.75 times higher than pre-halving levels. As a result, the share of fees in total mining revenue increased from an average of 2.8% in 2019 to 6.69% in 2020.
Ethereum’s fee economy was even more robust. Total transaction fees reached $631 million, with particularly sharp increases during the third quarter due to network congestion from DeFi activity. By the end of Q3, fees accounted for 30.05% of miner revenue, compared to 17.34% at the beginning of the quarter. For the full year, fees made up an average of 16.06% of Ethereum mining revenue.
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Network Difficulty and Mining Profitability
Bitcoin’s network difficulty adjusted 28 times throughout the year, with 17 upward adjustments and 9 downward adjustments. The largest single increase occurred on June 16, when difficulty rose by 14.95%. The cumulative annual increase in Bitcoin’s mining difficulty was 43.79%, significantly lower than the 97.67% increase seen in 2019.
Ethereum’s mining difficulty grew even more dramatically, rising 52.20% over the year—a stark contrast to the modest 5.32% increase in 2019.
These changes in difficulty were closely tied to fluctuations in hashrate. Bitcoin’s hashrate increased by 35.91% over the year, from 112.93 EH/s in January to 153.48 EH/s in December. With Bitcoin’s price rising 304.74% over the same period, the moderate increase in hashrate meant that miners likely enjoyed超额利润 (supernormal profits).
Ethereum’s hashrate growth was even more pronounced, rising 98.78% from 141.55 TH/s to 281.37 TH/s. As ETH’s price increased by 468.64%, Ethereum miners also benefited from favorable market conditions.
Major Mining Pools and Their Performance
Mining pools play a central role in the crypto mining ecosystem, and their performance offers insight into industry concentration and competitive dynamics.
In the Bitcoin network, F2Pool held the largest average share of hashrate at 17.53%, followed by Poolin (14.81%), BTC.com (12.30%), and AntPool (10.97%). Competition among these major pools remained fierce throughout the year, with frequent changes in ranking beyond the top position.
A notable trend was the emergence of exchange-affiliated mining pools. Huobi Pool, OKEx Pool, and Binance Pool all entered the market, with their combined hashrate showing consistent growth—particularly Binance Pool, which gained over 4 percentage points in market share during the fourth quarter.
Ethereum’s mining pool landscape was more concentrated. SparkPool, Ethermine, and F2Pool collectively controlled 75.51% of the network’s hashrate, with SparkPool alone accounting for 32.69%.
From a revenue perspective, the largest Bitcoin mining pools—F2Pool, Poolin, BTC.com, and AntPool—each generated estimated annual outputs exceeding $5 billion. Assuming a 3% service fee, six pools earned over $10 million in fees, with F2Pool and Poolin each exceeding $20 million.
On the Ethereum side, SparkPool, Ethermine, and F2Pool were the highest-earning pools, with estimated annual outputs of $772 million, $582 million, and $257 million, respectively. Under a 2% fee assumption, only SparkPool and Ethermine earned over $10 million in service fees.
Mining Hardware and Equipment Trends
As of January 2021, there were 101 different Bitcoin mining machines available on the market. Bitmain, MicroBT, and Canaan were the most prolific manufacturers, producing 25, 19, and 17 models, respectively.
Among the most profitable Bitcoin miners, four models each came from Bitmain and MicroBT, while Canaan and Whatsminer each had two. These top-performing machines had an average hashrate of 89 TH/s and an estimated daily net profit of approximately $14.50 at an electricity cost of $0.05 per kWh.
Ethereum mining hardware can be divided into assembled rigs and customized machines. Of the 60 Ethereum mining machines available, 35 were assembled rigs (58.33%) and 25 were customized units (41.67%). Among assembled rigs, those using RX and GTX graphics cards were most common.
In the customized segment, Innosilicon, Panda, and Wolf were the leading brands, offering 5, 3, and 3 models, respectively. The most profitable Ethereum miners had an average hashrate of 747 MH/s, with the Linzhi Phoenix leading at 2600 MH/s and a daily net profit of approximately $227.
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Frequently Asked Questions
What was the total value of the Bitcoin and Ethereum mining industries in 2020?
The Bitcoin mining industry generated approximately $50.12 billion in revenue, while Ethereum mining produced around $26.90 billion. Combined, the two networks accounted for over $77 billion in mining value.
How did Ethereum’s DeFi ecosystem impact mining profitability?
The growth of DeFi applications significantly increased network activity on Ethereum, leading to higher transaction fees. During the third quarter, fees accounted for over 30% of miner revenue, compared to just 17.34% at the start of the quarter.
Which mining pools dominated the market in 2020?
F2Pool was the largest Bitcoin mining pool with an average of 17.53% of the network hashrate. On Ethereum, SparkPool was the dominant player with 32.69% of the hashrate, followed by Ethermine and F2Pool.
How did Bitcoin’ halving affect miner revenue?
While block rewards were cut in half, the subsequent price increase and rise in transaction fees helped offset the reduction. Following the halving, daily transaction fees increased nearly fivefold, and the fee share of total revenue grew from 2.8% to 6.69%.
What were the most profitable mining machines in 2020?
For Bitcoin, the MicroBT M30S++ was the most profitable miner with a daily net profit of approximately $19.15. For Ethereum, the Linzhi Phoenix was the standout performer with a daily net profit of around $227.
How did energy consumption compare between Bitcoin and Ethereum mining?
Bitcoin’s highest estimated energy consumption reached 77.78 TWh, comparable to Chile's total energy use. Ethereum’s peak consumption was 14.64 TWh, approximately one-fifth of Bitcoin's total and equivalent to Tunisia's energy usage.
Conclusion
The cryptocurrency mining industry demonstrated remarkable resilience and adaptability throughout 2020. Despite Bitcoin’s halving event and ongoing market volatility, both Bitcoin and Ethereum mining maintained strong economic output. The emergence of Ethereum as a major mining network, driven by DeFi applications, created new opportunities for miners and equipment manufacturers alike.
Looking ahead, transaction fees are likely to play an increasingly important role in mining revenue, particularly for Bitcoin. For Ethereum, the implementation of layer-2 scaling solutions may help stabilize fees while maintaining network security. As the industry continues to mature, mining pools and equipment manufacturers will need to innovate constantly to remain competitive in this dynamic landscape.