Solana may soon double its block capacity from 60 million to 100 million compute units (CUs) in an effort to enhance transaction throughput and reduce network congestion.
A new proposal submitted on GitHub by Lucas Bruder, CEO of Jito Labs, recommends increasing the block limit to 100 million CUs—nearly double the current cap implemented just earlier this week. Bruder argues that Solana’s execution layer is no longer the primary bottleneck, making it both possible and advantageous to expand block size.
Originally, the 60M CU limit was set to ensure that the majority of validators could keep pace with the network. But with recent performance improvements and infrastructure optimizations, Bruder believes the network can now support significantly larger blocks without compromising validator stability.
If adopted, the proposed increase would allow Solana to process more transactions per block, potentially easing congestion and improving overall network performance. However, it may also lead to longer block execution times and could introduce unforeseen challenges for non-validator infrastructure.
What Does Solana’s Block Capacity Increase Mean for Users?
The proposal follows a recent network upgrade that raised Solana’s block capacity by 20%, increasing it from 48 million to 60 million compute units (CUs) per block.
According to Mert Mumtaz, CEO of infrastructure provider Helius, this increase enables “lower fees, given same demand, more expressiveness for devs, and better UX for users,” paving the way for additional capacity improvements down the line.
These upgrades come in response to earlier challenges Solana faced this year, when a spike in memecoin trading temporarily overwhelmed the network. The jump to 60 million CUs is expected to help prevent similar congestion, while the proposed move to 100 million CUs aims to future-proof the network for even higher traffic volumes.
