Many discussions and debates have been had over Bitcoin’s proof of work (PoW) mining and its effect on the environment and carbon emissions. Critics of the energy-intensive consensus mechanism argue that Bitcoin heavily contributes to overall environmental pollution, while the “digital gold” supporters argue the industry’s outsized contribution to greenhouse gas emissions is overstated.

According to the Cambridge Bitcoin Electricity Consumption Index, Bitcoin mining uses 175.82 terawatt-hours/TWh annually, which ranks it higher than most countries and 24th if it were a country. As far as greenhouse gas emissions go, Bitcoin ranks higher than several countries, such as Zambia, Israel, Greece, and Kenya.

Despite the high levels of electricity usage and carbon levels, Bitcoin supporters argue that crypto mining is good for the environment in several ways. From offering a new, energy-hungry market that will encourage renewable projects to help lead a renewable energy boom, revolutionize the energy grid, and soak up excess energy that would otherwise be wasted.

This article will explain the challenge of Bitcoin’s energy-intensive mining process, the rise of green mining in Bitcoin, and how companies are helping protect our planet while promoting Bitcoin mining.

As stated above, crypto’s energy-hungry mining process could be detrimental to the global carbon footprint – if left unchecked. According to the International Energy Agency, crypto mining accounts for 2% of global electricity usage, a figure that is estimated to rise to 3.5% by 2027. Bitcoin mining currently contributes to 0.7% of the global carbon footprint, and could rise to 450 million tons by 2027, or 1.2% of the world's total.

This increase has led to several global climate organizations calling on regulators to implement tougher measures in the industry. For instance, during the 2024 United Nations Climate Change Conference (COPA29), a report called for the introduction of a cryptocurrency mining levy to curb the high energy demand of crypto mining.

According to the report from the Global Solidarity Levies Task Force, a $0.045 per kWh levy should be introduced to reduce emissions and raise over $5.2 billion in revenue to combat climate change.

Furthermore, governments around the world have also placed restrictions on Bitcoin mining. The most high-profile Bitcoin mining restrictions were placed in China in 2021, which hosted nearly 65% of the global Bitcoin mining capacity at the time. In 2022, New York State implemented a temporary ban on new Bitcoin mining license applications to assess the environmental impact of mining activities. Norway has also closed all new applications for Bitcoin mining licenses despite the country’s high reliance on green energy. Finally, Russia also recently implemented a ban on cryptocurrency mining in three Siberian regions around Lake Baikal during the winter months to prevent power shortages.

However, other countries are embracing crypto mining under strict financial and energy regulations. Countries such as Germany, Japan, Nigeria, Switzerland, and Estonia have implemented strict rules on Bitcoin mining.

Ethiopia's unique case in 2024, a report by Mariblock confirmed the East African country signed agreements to sell electricity to 25 bitcoin mining companies, which generated over 55 million United States dollars (USD) for the government. Today, it is reported that the country contributes 2.25% of the global Bitcoin hash rate, ranking fourth after the U.S., Hong Kong and Asia.

Despite the criticisms and tough global regulations in place for Bitcoin mining, several experts in the field believe crypto mining's effects on the environment are overstated. Crypto advocates argue that the proof-of-work process is becoming more energy efficient: that more and more miners are turning to renewable energy sources like wind, solar, or hydropower, as opposed to coal or natural gas.

According to the Bitcoin Mining Council, a group that advocates for crypto mining, almost 60% of Bitcoin mining is now on sustainable energy. Several initiatives and innovations in the space are being launched, championing Bitcoin mining using renewable energy. For example, Fred Thiel, the CEO of the crypto mining company Marathon Digital Holding, stated his company is turning fully carbon neutral in 2025 in an interview with TIME magazine.

In addition, Fedrok, a Swiss-based blockchain company, is aiming to make Bitcoin mining ‘greener’ by combining sustainability with regulatory rigour. The company employs a Proof-of-Green (PoG) concept to incentivize greener blockchain mining. It rewards miners using renewable energy with FDK coins, directly linked to carbon credits​​. The mechanism integrates miners who meet specific environmental criteria, verified by auditors, who reward miners based on proportional carbon reduction efforts. Fedrok operates under Swiss regulatory standards, which are known for their strong emphasis on compliance and governance. This framework allows Fedrok to align its blockchain initiatives with established global norms, positioning the company to address both technological innovation and environmental responsibility with transparency.

Finally, blockchains such as Ethereum moved from a Proof-of-Work mechanism to a Proof of Stake (PoS), which reduces energy usage by more than 99% compared to Bitcoin’s system. More blockchain networks are employing PoS to reduce electricity usage and carbon emissions, as users only need to stake their tokens to secure and verify transactions on the network.

Questions about how greener Bitcoin mining will positively impact the environment remain to linger. Proponents believe moving to renewables, incentivizing miners, or the innovations in mining will make our planet greener, while critics state taxes will be the key to reducing carbon emissions from Bitcoin mining. However, the environmental challenges of Bitcoin mining cannot be solved entirely by the measures in place.

The Green initiatives, like incentivization by Fedrok, will need to scale globally to ensure Bitcoin miners integrate more environmentally friendly measures in their actions. Lowering the barrier to entry for crypto miners in renewable energy through lower costs or regulatory alignment could also incentivize miners to select more environmentally friendly energy sources.

Innovation must go hand in hand with sustainability when it comes to emerging technologies. Bitcoin’s environmental impact has sparked important conversations about how the tech industry can evolve responsibly. Green crypto mining presents a promising approach, but it also raises critical questions about its long-term viability and effectiveness.

Is green mining a stopgap or a permanent solution for Bitcoin’s environmental impact? The answer lies in how we balance technological advancements with ecological stewardship. Let’s commit to exploring solutions that prioritize both progress and the planet.