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Ethereum's network capacity has received a significant boost following the successful implementation of the second Blob Parameter-Only (BPO) hard fork. This upgrade, which took effect on Wednesday, has increased the blob limit from 15 to 21, a move designed to enhance transaction throughput and improve overall network scalability. This is the first of several planned improvements aimed at scaling the Ethereum ecosystem in the coming years.
Key Takeaways
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The blob limit on the Ethereum network has been increased from 15 to 21.
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This upgrade enhances the network's data throughput, allowing more transactions to be processed.
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The BPO hard fork also adjusted the blob target, which is a crucial metric for monitoring network health.
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Increased blob capacity contributes to more stable gas fees on the Ethereum mainnet.
Boosting Transaction Throughput
The primary impact of raising the blob limit to 21 is a substantial increase in Ethereum's data throughput. Each blob can hold 128 kilobytes of data, meaning the network can now accommodate up to 2,688 KB of data within a single block. This enhanced capacity is particularly beneficial for Layer 2 scaling solutions, as it allows for more transactions to be batched together via rollups, leading to faster and more efficient processing.
Stabilizing Gas Fees
Beyond improving transaction speeds on Layer 2 networks, the increase in blob capacity also plays a role in stabilizing gas fees on the Ethereum mainnet. By reducing congestion, the network becomes less susceptible to the volatile fee spikes often associated with high demand. Data indicates that transaction fees have shown greater stability since the initial BPO hard fork in December 2025.
Future Scalability Enhancements
The recent BPO hard fork is part of a broader strategy to scale the Ethereum ecosystem. Discussions among core developers have also included the possibility of raising the network's gas limit from 60 million to 80 million, which would further increase the number of transactions and smart contract operations per block. Looking ahead to 2026, the planned Glamsterdam hard fork aims to significantly increase the gas limit to 200 million and introduce "perfect parallel processing." This advanced processing capability, facilitated by Block Access Lists under EIP-7928, is expected to transform Ethereum's transaction processing from a single lane to a multi-lane highway, dramatically boosting throughput.
Sources
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Ethereum blob limit bumps up to 21, boosting network scalability — TradingView News, TradingView — Track All Markets.
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Ethereum blob limit bumps up to 21, boosting network scalability, mx.advfn.com.
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