Solana is preparing for a major overhaul that will make the famously fast blockchain even faster and much easier to run.
In a research report titled “Crypto Monthly Roundup for September 2025” released on October 3, global asset manager Van Eck said Solana’s upcoming Alpenglow upgrade will be the biggest change to the network’s core software since its launch.
The company calls it “the biggest upgrade to Solana consensus ever,” citing six key changes that promise faster performance, lower costs, and improved reliability.
For those not familiar with Solana’s design, Alpenglow essentially changes the way the network’s thousands of validators agree on which transactions are valid. This process, known as consensus, has been streamlined, allowing data to move through the system more efficiently and validators to operate with less friction.
What Van Eck emphasized
Faster finality. Currently, Solana takes approximately 12 seconds to complete a transaction. This means that the transaction is permanently confirmed.
Alpenglow reduces this to about 150ms. This is about the same time it takes to blink. Finality acceleration makes transactions, payments, and app interactions instantaneous, bringing Solana’s responsiveness closer to web-level.
Off-chain voting. Validators currently vote on every new block by submitting thousands of small transactions on-chain.
This keeps your network secure, but it chokes up your bandwidth. Alpenglow moves voting off-chain, allowing validators to exchange votes privately and post a single proof later. This frees up space for regular user transactions and helps keep network charges low.
Validator costs have been simplified. Instead of paying transaction fees for each vote, validators submit a single vote. Validator admission ticket each cycle.
This reduces costs, makes it easier for smaller operators to run validators, and increases decentralization and network security.
Streamline communication. Solana nodes constantly share messages to stay in sync. This is a process known as “gossip.”
Alpenglow reduces this background traffic, so validators spend less time and bandwidth coordinating with each other. This makes the system more stable even if some validators go offline.
larger blocks. The developer plans to increase block capacity by 25% by the end of the year.
A block is a batch of transactions added to the ledger. Increasing capacity allows Solana to accommodate more transactions in each block, reducing latency and congestion.
Fire Dancer Client. Firedancer, built by Jump Crypto, is the second independent version of Solana validation software scheduled to be released in late 2025.
Having two clients means that if one has a problem, the network can continue to run smoothly.
It also includes suggestions. SIMD-0370This removes Solana’s fixed limit on block size. This automatically scales your network with faster hardware, increasing long-term throughput.
P token for efficiency. Solana’s current situation SPL tokenIt is used for most on-chain assets and requires a large amount of computing power to move.
Mr. Van Eck says something new. P token This format reduces that demand by about 95%, frees up space within each block, and increases total transaction capacity by about 10%. This makes token transfers cheaper and makes the network more efficient even with heavy usage.
These changes demonstrate how Solana is redesigning its infrastructure to support the next generation of decentralized finance, gaming, and tokenized asset applications.
What Solana engineers are building beyond
While VanEck’s analysis captures the key elements of Alpenglow, Solana Labs’ Alpenglow whitepaper shows that the upgrade is deeper than the company describes. Engineers have made several behind-the-scenes changes aimed at making Solana faster, more robust, and easier to maintain over time.
One of the most important additions is the rotora new broadcast layer that replaces Solana’s existing Turbine system for disseminating data between validators.
Rotor transmits information more efficiently, reduces duplicate packets, and reduces the time it takes for new blocks to reach the entire network.
This change makes transaction confirmation smoother and improves network responsiveness during high loads.
Another improvement is that Local signature aggregationThis allows validators to combine multiple transaction signatures before broadcasting them to the rest of the network.
Every transaction on Solana has a digital signature that proves its origin. Processing each one separately consumes computing power and bandwidth. Alpenglow reduces that workload by grouping signatures, reducing the computational cost of maintaining security.
Enhanced with upgrades fault toleranceThis ensures that Solana continues to function even if 40% of your validators lose connectivity or are temporarily offline. This improvement increases network resiliency during regional outages and traffic spikes, limiting the risk of downtime.
Additionally, Alpenglow cuts out unnecessary “gossip” traffic that validators exchange in the background to stay in sync. Reducing this chatter not only frees up bandwidth, but also allows validators in regions with slow internet connections to participate effectively, broadening Solana’s global operator base.
Finally, Solana invites validator participation. ticket system This replaces thousands of small voting transactions with a single, predictable approval step. This change will simplify cost structures, lower barriers for small operators, and promote fairer participation and stronger decentralization.
Taken together, these improvements transform Alpenglow from a simple speed upgrade to a complete redesign of how Solana communicates internally. They demonstrate Solana Labs’ commitment to making networks not just theoretically fast, but reliable at scale. This is an essential step as more financial and consumer applications move on-chain.
