Bitcoin pioneered the rise of cryptocurrencies, sparking a wave of digital assets. Yet, after peaking at $69,000 in November 2021, its price plunged to around $20,000 by mid-June 2022, pulling the entire crypto market below $1 trillion. Amid this downturn, governments and environmental advocates are scrutinizing these assets for their ecological footprint. While some cryptos are adopting greener practices, what lies ahead for cryptocurrencies?
A cryptocurrency is a fully digital currency with no physical form, enabling direct peer-to-peer transfers without banks or central authorities.
These assets rely on mining, a core process that validates transactions on the blockchain—a secure, immutable ledger of all exchanges. Miners secure the network through complex computations, earning rewards in the cryptocurrency.
However, Bitcoin's proof-of-work mining faces global backlash due to its energy demands. China banned it in 2021 to support its 2060 carbon neutrality goal. Critics, including World Wide Web inventor Tim Berners-Lee, call it "one of the most fundamentally wasteful ways to use energy," especially amid the climate crisis.
Elon Musk, whose Tesla briefly accepted Bitcoin, reversed course in May 2021, halting payments due to reliance on "carbon-rich fuels... particularly coal." Prices dropped sharply. Later, in July 2021, he noted shifts toward renewables, with some studies estimating 20-70% of mining power from hydro, solar, or wind.
Bitcoin's blockchain consumes about 92.93 TWh annually (as of July 2022, per University of Cambridge data)—more than Kazakhstan's total (92.134 TWh) and enough for 679 years at the university's usage.
Each Bitcoin transaction uses 980 kWh, versus 0.0006 kWh for a Mastercard swipe—sufficient to power a Canadian household for over three weeks.
Could mining boost renewables? Miners might absorb excess renewable energy during peaks, stabilizing grids and halting during shortages, potentially accelerating green infrastructure. Conversely, it sustains fossil fuel plants by creating demand, even recommissioning idle ones. New York's cold climate and infrastructure attract exiled Chinese miners, but state lawmakers voted in June 2022 to ban proof-of-work mining, aiming for 85% emissions cuts by 2050. Sweden followed suit in 2021.
Federally, President Biden's March 2022 executive order mandates environmental recommendations on digital assets by September, potentially leading to U.S. regulations. Crypto stakeholders must monitor developments closely.
Facing climate urgency and market crashes, the industry is pivoting toward sustainability.
Bitcoin miners are decarbonizing via commitments, while exchanges offset emissions with carbon credits. Firms scrutinize energy sources to shrink footprints.
White Rock Management launched a Texas Bitcoin facility powered by flared natural gas from oil wells, partnering with NGON for green tech.
Several cryptos target climate solutions: SolarCoin rewards solar MWh production; Ecocoin incentivizes verified sustainable actions; PlasticBank prices ocean plastic for recycling; Peercoin's proof-of-stake uses 100x less energy; FairCoin promotes equitable wealth distribution with low-impact mining.
UN experts see blockchain aiding governance despite crypto's flaws, via tamper-proof transparency in corrupt-prone areas.
The UN World Food Programme's Pakistan pilot delivered aid via blockchain, bypassing banks.
Researcher Guillaume Chapron highlights four benefits: certifying digital ownership (e.g., land titles in Ghana, Georgia, Honduras); tracing assets (Everledger for diamonds, Provenance for resources); rewarding conservation with crypto payments; ensuring funds track to goals without intermediaries; enabling immutable public ledgers for political accountability.
Sanctioned from SWIFT, Russia develops the CELLS blockchain for ruble-based international payments, processing 100,000 transactions/second.
Gazprom Neft partners with BitRiver to mine Bitcoin using flared gas, mirroring U.S. efforts to cut emissions.
In summary, cryptocurrencies' future remains volatile, balancing innovation with risks. El Salvador's Bitcoin experiment lost nearly half its value nine months in, exacerbating debt pressures amid a 70% price drop.
