Ethereum set to boost gas limit to 60 million in upcoming Fusaka upgrade
John: Hey there, folks! I’m John, a veteran writer for Blockchain Bulletin, where I break down the latest in Web3, crypto, and blockchain in straightforward terms. Today, we’re diving into Ethereum’s upcoming Fusaka upgrade, which promises a big boost to the network’s gas limit and overall performance. For readers who want a full step-by-step guide, you can also check this exchange guide.
Lila: Hi everyone, I’m Lila, John’s curious assistant always eager to learn more about crypto. John, what’s this Fusaka upgrade all about, and why should beginners care about something like a ‘gas limit’?
What is the Fusaka Upgrade?
John: Great question, Lila. The Fusaka upgrade is Ethereum’s next major hard fork, scheduled for 2025-12-03, aimed at enhancing scalability, gas efficiency, and node resilience. It includes 11 back-end Ethereum Improvement Proposals (EIPs) that focus on behind-the-scenes improvements, like better data availability through features such as PeerDAS.
Lila: Hard fork? That sounds intense—like splitting a road in two. Can you explain what that means in simple terms?
John: Absolutely! A hard fork is like updating the rules of a game so everyone has to play by the new ones—it’s a permanent change to the blockchain that requires all nodes to upgrade. In the past, Ethereum has had successful hard forks like the Dencun upgrade in 2024-03-13, which introduced proto-danksharding to reduce Layer-2 costs. (And hey, if blockchains were cars, this upgrade is like giving Ethereum a bigger engine without the extra fuel guzzle.)
The Gas Limit Increase Explained
Lila: Okay, got it. Now, about this gas limit boost to 60 million—what exactly is ‘gas’ in Ethereum, and why is increasing it a big deal?
John: Gas is essentially the fuel that powers transactions on Ethereum; it’s a unit that measures the computational effort needed for actions like sending ETH or executing smart contracts. The current gas limit per block is around 30 million, but Fusaka will double it to 60 million, allowing more transactions per block and potentially lowering fees during busy times. According to recent updates from Ethereum developers on 2025-09-25, this change was approved to amplify transaction capacity significantly.
Lila: So, it’s like expanding a highway from two lanes to four to handle more traffic without jams?
John: Spot on analogy, Lila! This could help Ethereum scale toward handling up to 12,000 transactions per second by 2026, as noted in recent analyses. In the present, with testnet activations starting in early October 2025, we’re seeing preparations that include doubling blob capacity in follow-up forks shortly after the main upgrade.
Timeline and Key Dates
John: Let’s talk timelines to keep things clear. The Fusaka upgrade is set to go live on the mainnet on 2025-12-03, following successful testnet deployments. Developers confirmed this during the All Core Devs call on 2025-09-25, with testnets like Holesky, Sepolia, and Hoodi already gearing up—activations begin next week from today, 2025-09-27.
Lila: That’s soon! What happened in the past with similar upgrades, and how does this fit into Ethereum’s bigger picture?
John: In the past, upgrades like The Merge on 2022-09-15 transitioned Ethereum to proof-of-stake, slashing energy use by 99.95%. Looking ahead, Fusaka builds on that by focusing on efficiency, with blob capacity increases planned in subsequent weeks post-launch to further enhance Layer-2 affordability. (If timelines were a race, Ethereum’s devs are pacing themselves like marathon runners—steady and strategic.)
Potential Impacts on Users and Developers
Lila: How will this affect everyday users like me who just want to trade some ETH or use DeFi apps?
John: For users, the gas limit increase means potentially cheaper and faster transactions, especially on Layer-2 solutions where costs could drop further thanks to PeerDAS improving data availability. Developers will benefit from more resilient nodes and efficient operations, making it easier to build scalable apps. As of now, sources like CoinDesk report this could cut validator and Layer-2 costs, supporting Ethereum’s growth in a competitive crypto landscape.
John: Here’s a quick list of potential benefits:
- Increased transaction throughput, handling more activity without congestion.
- Lower gas fees during peak times, making DeFi and NFTs more accessible.
- Enhanced scalability for dApps, paving the way for broader adoption.
- Improved node resilience, reducing risks of network slowdowns.
Lila: That list makes it sound promising. But are there any risks involved?
Risks and Safeguards
John: Like any upgrade, there are risks, such as potential bugs during the hard fork or temporary network instability. However, Ethereum’s rigorous testing on multiple testnets mitigates this—developers have a track record of smooth implementations. Safeguards include community monitoring and the ability to delay if issues arise, as seen in past upgrades.
Lila: Good to know it’s not rushed. What about security—does this change anything there?
John: Security remains a priority; Fusaka’s EIPs are designed to bolster resilience without introducing new vulnerabilities. Regulatory bodies like the SEC continue to watch Ethereum closely, but this upgrade focuses on technical enhancements rather than altering token classifications.
Looking Ahead: Future Developments
John: Peering into the future, Fusaka is a stepping stone toward even bigger goals, like full danksharding for massive scalability. By 2026, we might see Ethereum hitting those 12,000 TPS marks, as projected in recent reports. Developers are already discussing the next upgrade, Glamsterdam, with its first devnet in progress.
Lila: Exciting! So, this is just one piece of Ethereum’s ongoing evolution?
John: Exactly, Lila. It’s all about steady progress in the blockchain world. (And if crypto upgrades were movies, Fusaka would be the sequel that actually lives up to the hype.)
John: Wrapping this up, the Fusaka upgrade is a solid step forward for Ethereum, making it more efficient and user-friendly for everyone from beginners to pros. It’s exciting to see how these changes will unfold by December 2025, potentially easing those pesky gas fees we’ve all grumbled about. And if you’d like even more exchange tips, have a look at this global guide.
Lila: Thanks, John—that cleared up a lot! My takeaway: Keep an eye on December 3, 2025, for cheaper, faster Ethereum transactions.
This article was created using the original article below and verified real-time sources:
- Ethereum set to boost gas limit to 60 million in upcoming Fusaka upgrade
- Ethereum’s Fusaka upgrade moves to December, blobs to double after
- Ethereum’s Next Upgrade ‘Fusaka’ Could Cut Layer-2 and Validator Costs