25, a transaction on the Solana network uses twice less energy than a Google search and 24 times less energy than charging your phone, according to a November 25th report by Solana Base.
The report says that a single transaction on its network uses 0.00051 kWh, or 1,836 joules of energy. According to Google, an average search consumes 0.0003 kWh or 1,080 joules of energy.
Even more surprisingly, the report claims that the entire Solana network uses an estimated 3,186,000 kWh per year, which is the average power consumption of 986 US households.
In May, the Solana Foundation commissioned Robert Murphy to write a report aimed at shaping the “environmental impact” of transactions on the Solana network. Murphy is the founder of Otherphere and was a former energy specialist at the World Bank.
The Solana network is less decentralized than Bitcoin or Ethereum, with 1,196 validation nodes that process an estimated 20 million transactions per year. The report said the foundation will continue to reduce the network’s energy consumption by rolling out a program by the end of the year to go carbon neutral and offset the ecological footprint of the ecosystem. No additional information was given on whether the network plans to buy carbon offsets or actually reduce its emissions.
Since Solana (SOL) is based on the proof-of-stake consensus mechanism, the network is much less energy-intensive than those based on proof-of-function mining methods like Bitcoin (BTC) and Ethereum (ETH). Statista estimates that a BTC transaction consumes an average of 4,222.8 million joules.
It should be noted that, from a technical point of view, networks do not consume a certain amount of energy for a single transaction. The network’s energy consumption can be the same whether it is processing a single transaction or a million. However, it is often used as a rough comparison when it is controversial,
With this in mind, an Ethereum transaction will consume approximately 644,004,000 joules based on the average number of transactions and the amount of energy required to run the network. According to Statista, the energy consumption of an ETH transaction is comparable to “more than a few thousand VISA card transactions”.
Related: Climate impacts of cryptocurrencies: is the carbon offset good enough?
However, Eth2 is expected to use about 99% less power than the current mainnet after switching to Proof of Choice.
Another energy-saving alternative is Ripple (XRP), which consumes 28,440 joules per transaction. Ripple says that for every million transactions on its network, the amount of energy consumed could power a lightbulb for 79,000 hours.
For the same number of transactions, the energy used by BTC can power a lightbulb for 4.51 billion hours. Because of this, Ripple claims that XRP is 57,000 times more efficient than BTC.