- Solana validators approved a major part of the blockchain’s planned Alpenglow upgrade.
- Alpenglow will cut block finalization times from about 13 seconds to as little as 0.1 seconds.
- The update aims to make it easier for small validators to profit and join the network.
- Proposed changes seek to address concerns over the concentration of power among large validators.
- Alpenglow could launch by late 2025 or early 2026 if current plans proceed.
Solana has taken a step toward a major upgrade called Alpenglow, after its validators approved a key part of the proposal. This change is intended to reduce the blockchain’s latency—the time it takes to finalize transactions—to as little as a tenth of a second, which could improve the network’s speed and efficiency.
The approved update modifies how validators—the entities that process transactions—vote on proposed blocks. According to researchers Mustafa Qazi and Gurnoor Narula, Alpenglow will help lower financial barriers for smaller validators by eliminating annual voting fees that can reach $60,000. Validators would benefit from reduced costs, increasing the odds that smaller operators can earn a profit.
Qazi and Narula noted that currently, fewer than 100 out of about 1,000 Solana validators control more than half of the network’s staked tokens. The proposed changes—including a revision to the inflation schedule, which affects token rewards—aim to create a more balanced system. “Limiting extraneous sources of revenue for high-stake validators, especially the inflation rate, is a low-hanging fruit to help address an inequitable validator set,” they wrote in their research.
Alpenglow’s technical overhaul is similar in scope to Ethereum’s recent Merge, a major change that shifted the network’s consensus, or way of reaching agreement on transaction data. If fully implemented, Alpenglow would make real-time uses such as gaming and high-frequency trading more practical on Solana. According to Vangelis Andrikopoulos of Sei Labs, this could also strengthen decentralization.
The update is expected to be split into 50 smaller sub-proposals in the coming months. Its timeline is set for late 2025 or early 2026, based on comments by researcher Roger Wattenhofer. Additional proposals include lowering the Validator Admission Ticket, a flat fee paid by every validator, from 1.6 SOL (about $350) per epoch to further encourage participation.
Developers and network participants are debating changes to reward distributions and admission fees to attract new validators while avoiding low-quality operations. Earlier proposals to reduce total staking rewards—around $3.5 billion each year—have so far failed by a close vote.
The upgrade has the support of leading Solana figures, including co-founder Anatoly Yakovenko and developer Mert Mumtaz. The name “Alpenglow” references a natural light effect seen on Swiss mountains, reflecting the background of key researchers who studied or taught at ETH Zurich.
For more technical details, see the first sub-proposal posted in the Solana forums.
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