Ethereum energy consumption has fallen sharply since the Merge, according to a recent analysis cited by the Cambridge Centre for Alternative Finance. The report estimates annual electricity use at 7.87 GWh and greenhouse gas emissions at 2.37 ktCO₂e. This represents a 99.98% decline from pre-Merge levels, aligning yearly energy draw with roughly 900 UK households.
In the power mix, researchers found that 56.4% of electricity supporting Ethereum’s nodes comes from sustainable sources. The mix includes 39.4% renewables and 17.0% nuclear generation, according to the source. Consequently, more than half of the network’s inputs skew to lower-carbon supply.
Meanwhile, the study evaluated how Ethereum energy consumption compares with other Proof-of-Stake networks on a market-adjusted basis. The report indicates Ethereum ranks as the second-lowest in energy intensity among major PoS blockchains when adjusted for market value. Specifically, it estimates about 33 kilowatt-hours per $1 million, suggesting a relatively efficient profile per unit of valuation.
However, the network’s node geography shows notable concentration. The study identified 8,522 discoverable full nodes, with 62% located in just four countries. As a result, many nodes reportedly operate within cloud or enterprise facilities, which may centralize infrastructure footprints.
The post-Merge shift to Proof-of-Stake underpins the headline decline in Ethereum energy consumption. According to the analysis, the transition corresponds with a dramatic reduction in electricity demand and emissions. Therefore, the network’s environmental profile appears substantially different from its prior Proof-of-Work era.
Notably, the researchers translated the electricity figure into a household-scale benchmark. The 7.87 GWh annual estimate is comparable to the yearly energy use of about 900 UK households. However, the report did not provide a granular breakdown, focusing instead on a broad equivalency.
Furthermore, the sustainable share reported for Ethereum’s nodes combines diverse generation sources. Renewables account for the largest slice, while nuclear adds a significant secondary component. As a result, more than half of the network’s electricity profile is categorized as lower-carbon.
However, geographic clustering and reliance on cloud providers remain areas to watch. The concentration of 62% of full nodes across four countries could influence operational resilience, according to the source. Meanwhile, enterprise hosting suggests professionalized infrastructure even as overall Ethereum energy consumption remains low post-Merge.
Ethereum energy consumption in context
According to the analysis, Ethereum’s estimated 2.37 ktCO₂e of annual emissions marks a steep contraction from historic baselines. Therefore, emissions intensity now reflects the efficiencies of Proof-of-Stake validation. In addition, the electricity intensity figure—about 33 kWh per $1 million of market value—places Ethereum near the top tier for PoS efficiency.
By contrast, energy efficiency does not fully capture decentralization dynamics. Node distribution and hosting choices may shape network characteristics beyond pure consumption metrics. However, the core takeaway remains the drastic reduction in Ethereum energy consumption since the Merge.
Sustainable power mix and node distribution
The study’s 56.4% sustainable electricity share blends 39.4% renewables with 17.0% nuclear. As a result, the network’s power inputs lean toward lower-carbon sources, based on the methodology cited. Meanwhile, the continued prevalence of cloud or enterprise facilities points to standardized operational environments.
In addition, the count of 8,522 discoverable full nodes provides a snapshot of identifiable infrastructure. However, undiscoverable or private nodes were not detailed by the source. Therefore, the landscape described represents the measurable portion available to researchers.
For readers seeking the underlying figures, the findings were summarized from a Cambridge-linked analysis. The report details the scale of reductions and the composition of electricity supply after Ethereum’s shift to Proof-of-Stake. Notably, it highlights both environmental improvements and distributional caveats.
According to the source, Ethereum energy consumption post-Merge has reached levels markedly below its Proof-of-Work period. However, the study frames the results within broader questions about hosting concentration and geographic clustering. In addition, it positions Ethereum as a comparatively efficient PoS network on a market-adjusted basis.
Overall, the report underscores a realignment of electricity use and emissions tied to Ethereum’s consensus change. Therefore, environmental metrics now sit alongside decentralization considerations as the network operates under Proof-of-Stake. Meanwhile, the data offers a current snapshot rather than a forecast, reflecting the source’s measured approach.
