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07/12/2026

Cambridge Study: Ethereum Among Most Energy-Efficient PoS Chains

What happened: The Cambridge Centre for Alternative Finance published an updated analysis of Ethereum's energy and emissions footprint post-Merge.

Cambridge Study: Ethereum Among Most Energy-Efficient PoS Chains

What happened: The Cambridge Centre for Alternative Finance published an updated analysis of Ethereum's energy and emissions footprint post-Merge. The study found Ethereum consumes 7.87 GWh annually with emissions of 2.37 ktCO₂e, and a 56.4% sustainable energy mix. On a market-value-adjusted basis, Ethereum's energy intensity is about 33 kWh per $1 million market cap—the second-lowest among proof-of-stake (PoS) chains, trailing only BNB Chain. Solana, by comparison, uses 13.48 GWh and is 8.5 times more energy-intensive per dollar of market cap.

Why it matters: The findings reinforce Ethereum's environmental improvements since its September 2022 transition to PoS, with a reported 99.9% drop in power use. However, the study notes that while Ethereum is efficient relative to its size, it still consumes more total energy than most smaller PoS chains. The analysis does not account for energy use by layer-2 rollups, which could alter the overall footprint.

Source: Cointelegraph