The Cambridge Centre for Alternative Finance (CCAF) published research on Friday, July 10, 2026, revealing that 31% of Ethereum node activity is now hosted in the United States.
The findings, part of a report titled “Ethereum After the Merge,” highlight a significant concentration of network infrastructure within a single jurisdiction, raising questions about regulatory exposure and network resilience if a substantial portion of validators were to go dark at once.
Geographic distribution and the finalization risk
Alexander Neumuller, the Research Lead at the CCAF, noted that node activity heavily clusters around three major hosting providers: Hetzner, Amazon Web Services (AWS), and OVH. According to the research, if more than a third of Ethereum’s validators go offline simultaneously, the network’s checkpoints will stop finalizing.
This “one-third problem” represents a critical threshold for the blockchain’s stability, as the current geographic and commercial distribution remains Western-centric and reliant on a few tech giants.
The CCAF study indicates that while the United States holds the largest single-country share of node activity, the European Union (excluding the UK) accounts for roughly 39%. Alexander Neumuller characterized this distribution as “Western-centric without being concentrated in any single country” during an appearance on the daily show The Starting Block.
However, the reliance on commercial hosting remains a point of concern for a decentralized network.
Because nodes cluster on platforms like AWS and OVH, a major service outage or a change in provider terms could potentially impact a large segment of the network. For instance, Hetzner’s terms of service previously prohibited running blockchain nodes, though Neumuller noted this policy may have since changed.
The risk is compounded by the fact that the exact “node-to-validator” ratio is unknown, meaning no one knows precisely how many individual validators are operating behind any single hosted node.
This structural reality has historical legal implications. In 2022, the U.S. Securities and Exchange Commission (SEC) argued that it held jurisdiction over Ethereum specifically because the majority of its nodes were hosted in the United States. The regulator contended that this meant transactions fell under U.S. securities law.
If the regulatory environment shifts, Ethereum navigates key support as market participants weigh the impact of such jurisdictional claims on the protocol’s censorship resistance.
Improving methodology for energy consumption
The report also revised the methodology for estimating Ethereum’s environmental impact following its transition to proof-of-stake. By using empirical data on how nodes split between residential and commercial hosting, the CCAF provided a more accurate picture of the network’s power usage. The results confirm that annual power consumption has fallen by 99.98% since the merge, dropping to approximately 7.9 gigawatt-hours.
This amount of energy is roughly equivalent to one megawatt of continuous power, or the consumption of about 2,000 UK households. Alexander Neumuller highlighted that 56% of the network’s power now comes from sustainable sources, which is higher than the global average of 43%.
Such technical improvements often influence the Ethereum network outlook as the protocol seeks to balance institutional adoption with its core decentralized principles.
One of the most surprising findings from the research was the relatively low cost of neutralizing the network’s environmental impact. To offset Ethereum’s total annual emissions with high-quality removal credits, the cost would range between £25,000 and £55,000 ($33,500 to $73,800).
Neumuller compared this figure to the average price of a car, suggesting that the network’s total carbon footprint is significantly smaller than previously assumed under theoretical models.
Monitoring decentralization for future stability
While the CCAF research offers a deeper look into the physical infrastructure of the network, the challenge of decentralization remains an ongoing concern for the community. Alexander Neumuller described the current distribution as healthy but warned that stakeholders should continue to monitor geographic and client software concentration.
A bug in a dominant software client could propagate across these clustered nodes, presenting a parallel risk to physical outages.
The report was supported by the Ethereum Foundation, though Neumuller clarified that he has not discussed the specific centralization findings with the organization directly. Instead, he characterized the foundation’s emphasis on decentralization as his own reading of their public communications.
As the market reacts to these findings, professional traders will likely keep a close eye on the Ethereum recovery outlook to see if node operators begin to diversify their hosting choices to mitigate the risks of a finalization stall.