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The high energy consumption of proof of work-based distributed ledgers hasbecome an important environmental concern. Bitcoin, for example, consumes asmuch energy in a year as a developed country. Alternative consensus mechanisms,such as proof of stake, have been shown to use drastically less energy thanproof of work-based DLTs. For example, the IOTA DLT, built upon a directedacyclic graph (DAG) architecture, uses an alternative consensus mechanism thatrequires significantly less energy than other DLTs. Because the (DLT) space isconstantly and rapidly evolving, the question of how much energy DLTs actuallyconsume demands to be continuously studied and answered. Previous research intothe energy consumption of the IOTA network has shown that an optimization inthe overall protocol correlates to an optimization in energy consumption. Theplanned IOTA 2.0 update, built upon the GoShimmer research prototype, promisesto further optimize the protocol by removing the network's centralizedCoordinator. This report presents the results of measuring the energyconsumption of a private GoShimmer network while comparing these findings toprevious research into the current mainnet, which is called Chrysalis. The mainfindings of this report are that the IOTA 2.0 research prototype shows bothimprovements and increase in the energy consumption metrics compared to theChrysalis network. Additionally, this report defines a model to estimate thetotal annual energy consumption of an IOTA network. This model should besignificant for future research as it enables a way to estimate the total costof running the IOTA network as well as its carbon emissions. Moreover, havingan annual power consumption metric allows for better objective comparisons todifferent DLTs.

Report on the energy consumption of the IOTA 2.0 prototype network (GoShimmer 0.8.3) under different testing scenarios