Cambridge study puts Ethereum near the lower end of PoS energy intensity

A caller Cambridge survey placed Ethereum adjacent the little extremity of vigor strength among large proof-of-stake (PoS) blockchains, though the web inactive utilized much energy wide than astir of the PoS networks studied.

The Cambridge Centre for Alternative Finance estimated that Ethereum consumes astir 7.87 gigawatt-hours (GWh) of energy annually. When adjusted for marketplace value, the web utilized astir 33 kilowatt-hours (kWh) per $1 million, the second-lowest fig among the proof-of-stake networks assessed, down BNB Chain.

Solana utilized the astir energy among the PoS networks studied, astatine astir 13.48 GWh per year. Its vigor strength was astir 283 kWh per $1 cardinal of marketplace value, astir 8.5 times Ethereum’s, portion the networks successful the examination consumed astir 38 GWh combined.

The study provides 1 of the astir elaborate assessments yet of Ethereum’s post-Merge footprint, giving policymakers and investors a much existent ground for comparing blockchain sustainability.

Illustration of post-Merge Ethereum consumption. Source: Cambridge

New estimates representation Ethereum’s vigor use

Cambridge measured however overmuch energy Ethereum nodes utilized astatine the partition crossed 20 combinations of the network’s main bundle clients. It recovered that a emblematic location setup utilized astir 18 watts, portion a much almighty workstation utilized astir 153 watts.

Using Ethereum’s premix of residential and professionally hosted nodes, the researchers estimated an mean powerfulness gully of astir 105 watts per node. Cambridge counted astir 8,522 discoverable afloat nodes, with 64% moving successful unreality oregon endeavor facilities and 36% connected residential connections.

Cambridge said Ethereum’s remaining emissions are present driven chiefly by the energy grids supplying its nodes. The survey estimated that astir 56.4% of the network’s energy premix came from renewable and atomic sources, compared with 43.6% from fossil fuels.

Related: Vitalik Buterin shares priorities for caller 'Lean Ethereum' strawmap

Ethereum moved from proof-of-work mining to proof-of-stake validation through the Merge successful September 2022. The Merge replaced miners competing with 1 different utilizing energy-intensive computing instrumentality with validators who unafraid the web by staking Ether.

After the Merge, vigor estimates showed that the upgrade had reduced the network’s energy use by much than 99.9%, arsenic the mining process utilized to unafraid the blockchain was removed. 

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