π The Merge The Merge
On September 15, 2022, Ethereum switched from mining (Proof of Work) to staking (Proof of Stake). The whole network changed how it runs without losing a single balance or block of history.
π The simple version β swapping the engine, not the building
Picture a building powered by a fuel-burning generator that runs nonstop. One day the owner switches it to grid and solar power. The lights never flicker, the offices keep working, and nothing inside changes β only the thing producing the power is different. That is the Merge. Ethereum kept all of its balances, apps, and history exactly where they were, and only swapped the system that secures the network: out went mining, in came staking.
βοΈ What actually changed β mining vs. staking
| Before the Merge | After the Merge |
|---|---|
| βοΈ Miners raced with computing power (a lot of electricity) to add the next block | πͺ Validators who lock up ETH are picked to propose and check blocks |
| π Proof of Work β security came from burning energy | π Proof of Stake β security comes from staked coins at risk |
| π New ETH paid out as mining rewards | π New ETH paid out as staking rewards (far less of it) |
The new system had actually been running quietly alongside the old one. A separate Beacon Chain had been live since December 2020, learning how to coordinate validators. The Merge joined that chain to Ethereum's main network and let it take over as the engine.
π± Why beginners hear about it β energy and supply
- π Far less energy β Ethereum's energy use dropped by roughly 99.95%. Proof of Stake is about 2,000 times more energy-efficient than the old mining setup, which is why the Merge gets cited against "crypto wastes power."
- π Less new ETH created β Mining rewards ended, so daily new ETH fell sharply (estimates put it from around 13,000 ETH a day down to roughly 1,700). Paired with the fee-burning rule, ETH can even shrink in supply during busy periods.
- πͺ Staking became the path β After the Merge, ETH is staked, not mined. This is the reason you can now earn staking rewards on Ethereum.
π¦ What the Merge did NOT do
π The Merge was a consensus change, not a capacity upgrade. It did not lower gas fees, and it barely touched speed β block time only moved from about 13.3 seconds to 12. Cheaper, faster usage came later from Layer 2 rollups and the 2024 Dencun upgrade. The Merge also did not let people withdraw staked ETH; that arrived later with the Shanghai/Capella upgrade in April 2023.
β FAQ
- Did the Merge make Ethereum cheaper and faster?
- No. The Merge changed how Ethereum agrees on blocks, not how much it can handle. Gas fees did not drop and block time barely moved (from about 13.3 to 12 seconds). Cheaper fees came later from Layer 2 rollups and the 2024 Dencun upgrade.
- Were any coins or transactions lost during the Merge?
- No. Every balance, every past transaction, and every app stayed exactly where it was. Only the engine underneath was swapped, so users did not have to move anything or do anything.
- Could I withdraw staked ETH right after the Merge?
- No. The Merge enabled staking as the new way to secure the network, but withdrawals of staked ETH were not turned on until a later upgrade called Shanghai/Capella in April 2023.