xDai Energy Efficiency
lab10Collective recently compiled energy usage stats for several blockchains as well as Visa.
In this article we present an overall energy usage overview (provided by Lab10Collective) of different blockchains as well as VISA. The data shows that the xDai chain is extremely efficient while providing fast block times and a scaleable infrastructure.
This overview was done in 2020. In 2021 Energy Consumption for both Bitcoin and Ethereum has increased dramatically.

Energy Usage Overview

Energy usage equivalents (number of average US households consume the same amount of energy as the following chains/Visa). Note this figure is for 2020, energy usage has increased dramatically for Ethereum and Bitcoin in 2021.
Chain / System
# of US Households
Bitcoin
5,250,408
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Ethereum 1.0
721,223
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Visa
42,702
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Ethereum 2.0 *speculated
2,704
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xDai Chain
2.1
πŸ‘―β™‚
Artis
0.8
πŸ•΄

Bitcoin Footprints

A frequently mentioned concern about blockchain technology is energy consumption. Bitcoin is known to use incredible amounts of energy. The annual footprint is alarming.
Ethereum currently consumes much less energy, but it is still equivalent to the energy needed to power 721,223 US homes. https://digiconomist.net/ethereum-energy-consumption. This will change with Ethereum 2.0*
Large centralized companies like VISA can process many transactions per second and require less energy: 42,702 US households. Keep in mind, however, this is just for transaction processing, not all of the power that VISA uses for things like offices, travel, banking infrastructure etc. Not to mention they are a giant centralized corporation that charges high transaction fees.

xDai Chain Efficiency

​lab10Collective, a project dedicated to a sustainable energy economy and also an xDai validator, recently ran comparison data for their Artis Chain and the xDai chain relative to other transaction processing chains/systems. They found that ARTIS and xDai are extremely efficient, consuming far less power than other chains as well as payment processing giant VISA.
Efficiency is based on the number of operating nodes, hardware requirements, and TPS (Transactions per second) capacity.
The energy consumption required to run the ARTIS is equivalent to 0.8 US households annually. For xDai it is 2.1 households. ARTIS is ~ 600x more efficient than Visa, and xDai 300x+ more efficient than VISA.
Visa does have a much higher TPS (7896 max vs 119 max for xDai) at them moment. If required however, xDai can scale to offer more TPS through bridging (horizontal scalability) or node improvements (vertical scalability). These solutions would slightly increase energy requirements, but these increases would be minor relative to VISA or POW blockchains. In addition, HoneyBadger BFT consensus will improve the TPS to 476 without vastly increasing the energy consumption per TX.
xDai is extremely efficient, and further decentralization with public POSDAO will improve security and usefulness for the chain.

Energy Consumption Statistics

Stats provided by Artis. Note that TPS capacity is the absolute max capacity with simple Txs, the actual TPS is considerably lower.
TX Processor
TPS Capacity
Tx / Yr
Energy Consumption kWh
Wh/Tx
Wh/Tx Compared to Visa
avg. # of US households
Visa
7896
249,000,000,000
444,063,000
1.7834
​
42,702
Bitcoin
3.5
109,500,000
56,700,000,000
517,808.2192
290351x worse
πŸ›‘
5,452,447
Ethereum
34
1,072,653,061
7,500,000,000
6,992.0091
3921x worse
πŸ›‘
721,223
Ethereum 2.0*
2177
68,649,795,918
28,119,600
0.4096
4x better
βœ…
2,704
xDai
119
3,754,285,714
21,900
0.0058
306x better
βœ…
2.11
ARTIS
95
3,003,428,571
8,760
0.0029
611x better
​
βœ…
0.84
HBBFT
476
15,017,142,857
52,560
0.0035
510x better
​
βœ…
5.1
*Ethereum 2.0 will greatly reduce the Ethereum environmental footprint, although not enough is yet known to determine the total efficiency of the network. Numbers provided here are purely speculative. Lab10 estimates Eth2 will be similar to VISA in regards to energy consumption for transactions, but much more open and decentralized. Also, VISA uses much more energy to fund their corporate enterprise vs minimal energy for a decentralized blockchain.
Last modified 4mo ago