This article was first published on IOTA Foundation Blog
In our tests, a Raspberry Pi 4 node uses just over a millionth of a kWh per IOTA message/transaction, including proof-of-work costs.
For comparison, making one mug of coffee in a single-serve machine uses about .024 kWh (nearly 22,000 times as much energy).
There is increasing, and appropriate, scrutiny of the energy footprint related to cryptocurrency networks. At the IOTA Foundation, we place emphasis on low energy requirements and green use cases.
- Digitizing measurement, reporting and verification of sustainability performance (Digital MRV) in Chile, funded by the Canadian government.
- Tracing the path of energy from production in solar panels to consumption in electric vehicles in Trondheim, Norway, with Jaguar Land Rover, Engie Lab Crigen & Entra ASA.
- Improving efficiency in the supply chain and allow goods to travel more freely across borders, with Zebra Technologies.
- Reducing supply chain friction from Kenya to the Netherlands, speeding up goods transfer and reducing waste of fresh produce, with Trademark East Africa.
External research has previously demonstrated the low power consumption of the pre-Chrysalis IOTA network. The recent Chrysalis upgrade removes many inefficient aspects of the protocol and should further improve energy efficiency. However the IOTA Foundation has traditionally refrained from posting any energy efficiency figures publicly, as measurement is complex and nuanced. The figures can vary considerably depending on the network toplogy and the load.
Given the recent interest in this topic and in response to community requests, we have decided to publish our internal metrics, gathered during Chrysalis development. These metrics demonstrate a significant reduction in energy consumption as a result of the upgrade.
IOTA is designed to be lightweight and a Hornet node can run on low-power devices like Raspberry Pis.
- Running a Hornet node on a Raspberry Pi 3 or 4 with no transactions ...
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IOTA Foundation Blog