Solana 100M CU Blocks: What 66% More Capacity Changes
Right as epoch 1009 rolled over, Solana quietly flipped a switch. Blocks got bigger in a very specific way: more compute per block. If you were refreshing a trading UI, a DePIN dashboard, or an NFT mint page, you might have just felt things breathe a bit easier.
The change is simple on paper. The maximum block compute moved from 60 million to 100 million CUs. That is a 66% bump. It went live at the very start of epoch 1009 on July 29, 2026, after months of prep work and network checks Solana Foundation (Upgrades).
It sounds like a number tweak. In practice, it touches fees, failure rates, validator hardware pressure, and how MEV searchers race to fill blockspace. Letโs unpack it in plain English.
Solana had been bumping into its 60M-CU ceiling during spicy traffic. One in roughly nine blocks came close to the cap over the past year, which telegraphed a simple message: the chain needed more headroom or more aggressive scheduling Solana Foundation (Upgrades).
A 66% capacity lift does not guarantee lower fees at all times. It widens the pipe. Whether fees drop depends on demand, how localized congestion is, and how quickly validators can propagate heavier blocks.
โฆ Continue reading the full article at the original source below.
