Exactly one year after a pivotal move to proof-of-stake (PoS), Ethereum has seen a substantial reduction in its energy consumption and improvements in network accessibility. This milestone occurred on September 15, 2022, with the merger of the Ethereum mainnet and the Beacon Chain, an independent PoS blockchain.
The most significant improvement post-merger is the transition from the energy-intensive proof-of-work (PoW) consensus mechanism to PoS. This shift has drastically reduced Ethereum's overall energy consumption. According to the Cambridge Center for Alternative Finance, Ethereum's energy consumption has plummeted by over 99.9%, from roughly 21 terawatt-hours used during PoW to its current PoS levels.
This transition has also made Ethereum economic deflationary. More ETH is being issued to secure the network than is being removed from circulation. Since the merger, over 300,000 ETH (equivalent to $488 million at current prices) has been burned, leading to a 0.25% annual decrease in the total supply of ETH. While some believe this deflationary pressure could boost Ethereum's price, macroeconomic factors like banking crises and rising inflation have somewhat tempered these expectations.
It's worth noting that Ethereum's price growth has lagged behind Bitcoin's. In the first quarter of this year, Bitcoin appeared to benefit from traditional financial instability due to a banking crisis.
However, the central focus of the PoS upgrade is the introduction of stakers to secure the network, replacing miners. The subsequent Shapella upgrade in April 2023 triggered a massive shift towards ETH staking. Liquidity staking providers like Lido and Rocket Pool have been the primary beneficiaries of this transition.
As of now, liquidity staking providers dominate the Ethereum landscape, with over $19.5 billion worth of ETH staked through these protocols, according to DefiLlama. Lido is the largest staking provider, accounting for 72% of all staked ETH. While liquidity staking has been praised To eliminate the need for expensive and complex mining hardware, concerns have arisen regarding the level of control of these staking providers, particularly Lido Finance, wield over the network.
To address these concerns, at least five Ethereum liquidity staking providers are working to implement a 22% cap rule to ensure network decentralization, despite Lido's opposition to the idea. Lido currently controls 32.26% of all staked Ethereum on the network, worth over $14 billion .
Besides staking, another significant challenge facing Ethereum is growing regulatory pressure, especially in the United States. The US government's stringent approach to cryptocurrencies and blockchain companies could have dire consequences for the global blockchain community.
Diversity of clients also remains a pressing issue. Vitalik Buterin, Ethereum's co-founder, highlighted six key challenges, including the need for more decentralized nodes to avoid single points of failure. To achieve this, he proposed the concept of statelessness, which significantly reduces data requirements for node operators.
While the move to PoS has been a significant milestone for Ethereum, it faces various technical and regulatory hurdles as it strives to maintain and improve network decentralization.
