Simply put
- Following the Ethereum Pectra upgrade, the cost of BLOB transactions plummeted from $16,000 to just a penny each day, and operating Layer 2 networks became significantly cheaper.
- While BLOB usage surged by 33%, rollups haven’t fully utilized the increased capacity.
- This reduced cost also puts additional pressure on smaller validators, often pushing them to merge with larger entities.
A month after the Pectra upgrade, several essential metrics started revealing both the advancements and complexities of Ethereum’s largest overhaul since the 2022 “Merge.”
A significant aspect of the Pectra upgrade was enhancing the Ethereum blockchain’s capacity to manage “blobs,” which are essentially units of temporary data storage as explained by the protocol development team.
A BLOB serves as a structured means to hold substantial amounts of data, leading to reduced transaction costs and more efficient Layer 2 network and rollup functionalities.
“The dropping cost of blobs was a crucial step for Ethereum’s scalability,” commented Ulyana Skladchikova, who leads the product team at the open-source multi-chain explorer Block Skate.
The same factor enabled Layer 2 solutions to post data more cost-effectively and support high-volume, low-cost rollups, she further explained.
These high-throughput and affordable rollups include popular networks like Base and Arbitrum, allowing for the processing of thousands of transactions for pennies rather than dollars.
“For Ethereum, this creates a modular design that offers real advantages now visible throughout the L2 ecosystem,” Skladchikova said.
The blobs are cheaper
Just a week after the Pectra upgrade, various rollups like Base and Arbitrum were experiencing transaction costs of less than a penny each day.
“For the first time since April 2025, blobs are nearly free again,” noted Zack Pokorny, a research analyst at Galaxy, on May 15.
Since the Pectra launch, transaction costs have reportedly fallen to “1 in 4,000th of a penny,” a remarkable drop from the previous $16,000 per day.
A significant factor in this decline was EIP-7691, which introduced Blob Scaling in the Pectra upgrade. Following the activation of Pectra, BLOB usage grew by about 20%, increasing daily purchases to 25,600.
However, despite this growth, rollups still haven’t fully capitalized on the added capacity, leading to significantly lower blob prices.
By late May, BLOB usage climbed to approximately 28,000, marking a 33% rise since Pectra’s launch.
Validator Integration
While reduced blob costs have boosted rollup profit margins, they also present challenges for validators.
According to Skladchikova from BlockScout, the improved blob pricing has indirectly increased the “validator data burden.” She argued that this reflects a necessary trade-off.
Validators, who maintain Ethereum’s security and process transactions by locking a portion of their ETH, do so in exchange for earning rewards. Yet, inconsistent performance can lead to penalties.
Due to newer processing demands, some smaller validators might merge with larger operations capable of handling both elevated stake limits and storage requirements, as individual operators may struggle without risking penalties.
“This sort of consolidation often raises concerns about centralization,” Skladchikova mentioned.
In May, Ethereum prices experienced notable volatility, soaring from about $1,800 to a peak nearing $2,800 at the start of the month. Currently, ETH sits at a 27% gain over the last 30 days.
