The Solana network has increased its block capacity by 20%, raising the limit to 60 million compute units (CUs), with plans to expand this even further before the end of 2025.
Mert Mumtaz, co-founder and CEO of Solana infrastructure firm Helius, explained in an X post on Wednesday that the upgrade will enable more transactions to fit into each block, improving the network’s efficiency. Previously, each block had a capacity of 48 million CUs.
Solana blocks are now 20% bigger — what does this mean?
on Solana, every transaction sent consumes resources
we call this resource “compute units” or CUs — like fuel for a car
every transaction consumes a different amount of CUs depending on its complexity, a simple transfer… https://t.co/4XOYZDUTtH
— mert | helius.dev (@0xMert_) July 23, 2025
“This capacity used to be 48 million CUs, meaning the sum total of all transactions for a given block must be around this number,”
he said
The increase should result in
“lower fees, given the same demand, more expressiveness for devs, and better UX for users,”
according to Mumtaz.
Every transaction on Solana consumes compute units, depending on its complexity. Earlier this year, the network faced transaction congestion amid a memecoin trading frenzy, including launches tied to US President Donald Trump and First Lady Melania Trump.
Plans are underway to push block capacity even further. A GitHub proposal by Lucas Bruder, CEO of Jito Labs, suggests increasing the limit to 100 million CUs. Bruder noted that the original block limits were designed to prevent network participants from falling behind, but current mainnet activity no longer requires such conservative restrictions.
“This proposal aims to substantially increase block limits to 100 million CUs to provide additional capacity to the network,”
Bruder wrote, while Mumtaz added that Solana ultimately aims to double its current 60 million CU limit.
The network’s growth has coincided with rising interest in its native token. Solana (SOL) jumped 12% on Monday to over $202, according to Nansen data, and is currently trading above $191, up 11% over the past week.
Institutional interest is also ramping up. Nasdaq-listed DeFi Development Corp revealed on Monday that its Solana holdings are approaching one million tokens. Earlier this month, Bitcoin mining firm Bit Mining announced a strategic shift into the Solana ecosystem, outlining plans to raise up to $300 million to build its Solana token treasury.
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