Bitcoin network average energy consumption per transaction compared to VISA
statista.com
statista.com
[1] https://electricityplans.com/kwh-kilowatt-hour-can-power/
Also there is a link between weather and energy usage. An average household in Louisiana or California uses way more electricity than New York's average.
Germany ranks very high in terms of renewable energy ratio and I think that's more remarkable.
But I am not trying to defend the energy usage of PoW, here. A single Bitcoin block can only fit about 3500 transactions and all miners of the world compete for being the first in solving the emerging Block‘s cryptographic puzzle. This is where the insane energy consumption comes from.
Other cryptos work differently in that respect and, hence, are way cheaper.
So roughly somewhere between $70-$150.
The number of transactions that are completed on the base layer is not the relevant metric. As the technology matures and as Bitcoin is more fully monetized, transactions will happen on higher layers. The "high" energy cost is necessary to secure the decentralized system.
The difference is important because as Bitcoin adoption increases the number of transactions will increase and the cost-per-transaction will fall dramatically. But the actual marginal cost likely won't. (I bet the result would still dramatically favor Visa.)
No, the maximum number of transactions per block is fixed (actually, the maximum size of a block is fixed, but there's a limit to how small each transaction can be).
> and the cost-per-transaction will fall dramatically.
No, because of the limit on the number of transactions, the cost per transaction will increase (users have to pay a higher per-transaction fee to increase the chance of it being included in a block, and miners are incentivized to use the extra income from transaction fees to buy more power).
This has nothing to do with whether the number of transactions will increase.
>No, because of the limit on the number of transactions, the cost per transaction will increase (users have to pay a higher per-transaction fee to increase the chance of it being included in a block, and miners are incentivized to use the extra income from transaction fees to buy more power).
My point was that they seem to be counting overhead beyond the marginal transaction cost, and if they are, then the number they report will fall as the transactions increase. You seem to be talking about how the marginal cost per transaction will increase.
Accordingly, you're using the wrong framework. Bitcoin's energy consumption prevents double spending, which is necessary for securing such a system. It isn't energy used to compute a transaction.
The point here is that if Bitcoin would actually finally increase the block size of their chain (like Bitcoin Cash and others have done) then a.) there wouldn't be a constant backlog of transactions and b.) the "energy-per-tx" graph like this would look better.
In the case of cryptocurrencies, the answer is likely a combination of what miners and users can support. The goal is to be large enough that we don't have throughput problems and block space doesn't become a bidding war.
It's also worth mentioning that this doesn't mean the end-users have to be able to run nodes themselves or on mobile phones, since that makes use of a process called Simple Payment Verification (SPV) where they only process block headers and get the blocks they are interested in, but still verify the consensus of the network.
But, it also depends on what you see cryptocurrencies as. If you want them to replace traditional cash and create a "digital cash" world, then you want to see them accepted and used anywhere at a very large scale. In that world-view you have millions of transactions regularly and miners get paid with the sum of lots of small fees.
However, if you think that cryptocurrencies should only be used as a speculative asset or as a "digital gold" then you don't care much about it actually being transacted, and in that case fees as high as $50/tx are fine because you don't have any expectation that the world will be using it at scale.
Miners don't have to store the full chain, end users don't need to store the full chain, but somebody has to store it. Seems like those people, the people running full nodes, should have the final say on how big the blocks are and therefore what the throughput of the network is. I guess in reality, they do, since they decide which fork to run. Right?
When miners find a block, they race to get it published as quickly as possible to as many nodes as possible. If A finds a block, and stuffs it full of transactions; and shortly thereafter B finds a block, and includes no transactions, B might actually "win" the race because B can propagate his tiny block much faster than A. So each txn added incurs a tiny penalty just by virtue of adding to the payload.
> they decide which fork to run
In reality most hashpower is pooled and pools autoswitch between forks depending on which is more popular in the moment. So most people running miners are mining all forks.
Once we get to the point where everyone can do 10 TXs per day without a bidding war, then maybe. But also consider that we can currently store every single bit of communication in the 1980's on a chip about the size of my finger. History seems to tell us that what we think is a large amount of data becomes commonplace in a few decades.
Probably another way to look at it is that people regularly open their mobile phone or browser and view a few minutes of video and transfer 300MB - 1GB of data to do so. During that same time the transactions of the entire world economy could have been transferred.
Well they also decide what to put in the blocks they mine. Nobody forces anyone to put something in a block. And, yes, they also can decide which fork to run.
https://www.investopedia.com/articles/personal-finance/05051...
None of these things will bridge that gap, unveiling a missing data point that somehow makes VISA less efficient by six magnitudes that somehow researchers were missing all this time. But constantly asking for more detail is a good way to stay in denial about Bitcoin's terrible numbers.
The difference is orders of magnitude. SWIFT won't cross the gap. Bitcoin has a lot of things going for it. Energy efficiency isn't one of them.
If the chart were anywhere close to 1:1 I could understand wanting to nitpick little details, but in this case go ahead and double/triple/quadruple the estimate, and it's still shocking.
Nitpick: nothing gets transferred with SWIFT. SWIFT is a messaging service. Settlement happens on separate rails.
- One study [1] estimated that 70B kWh were required to run the Internet, at an estimated cost of ~$7B annually assuming 10c/kWh (which is probably high);
- One report [2] estimated the energy consumed by Bitcoin at 121.36TWh, which is 121.36B kWh.
So assuming these numbers are remotely accurate, which is a big "if" I'll admit, more energy is spent on Bitcoin than the entire rest of the Internet infrastructure.
Other commenters have asked variation of "once [coin] moves from PoW to PoS, what will [no coiners] complain about?" That's easy: not the (essentially pointless) energy expenditure (and resultant carbon footprint) obviously.
[1]: https://www.forbes.com/sites/christopherhelman/2016/06/28/ho...
Visa is good at processing many small transactions.
Bitcoin is good at storing value over time, across borders, without censorship.
Since Bitcoin is useful without many transactions, it's deceptive to measure its energy usage per transaction.
It would be equally useless to cite Visa's 10-year stored value percentage gain vs. gold, because preserving value over time is not what Visa does.
From my limited vantage point, BitCoin's actual use cases are underground/gray markets and speculation.
Banks store government money which depreciates gradually in good years, and devalues rapidly in bad years. It's all one direction, toward zero, it never gains value.
On top of the relentless depreciation, add the risk of bank insolvency.
Banks are terrible stores of value.
Historically, you could have bought 99.8% of the days Bitcoin existed and you would be up today.
Animal agriculture is a great place to look when it comes to senseless energy expenditure just to produce products that please our taste buds, if this were something we actually cared about, but we don't. 800-1200kWh are consumed to prop up a single dairy cow every year, just to produce a product that tastes good. 250M+ dairy cows in the world.
It's just so tempting and convenient to bemoan things we happen to not partake in, and then we pat ourselves on the back as if we are avoiding it for ecological/energy reasons.
It's a bit boring to see on HN every week, mostly because it's a cesspit of world view confirmation and anti-bitcoin circlejerking rather than a spark of intellectual curiosity.
Nowhere else has an incentive to use as much power as possible. With your example of animal agriculture, the incentives align towards a lower energy expenditure (if a farmer spends more on energy, either the profit is lower, or the extra cost is passed to the customer, who then has an incentive to consume less). With Bitcoin, the incentive aligns towards a higher energy expenditure (for a given Bitcoin price and amount of transaction fees, a miner which uses more energy gets a higher portion of the block rewards and transaction fees, so the collective energy usage of all miners converges towards using all of the block rewards and transaction fees to pay for energy).
If your animal-raising machine is profitable, you absolutely want to put as much power into it as possible - raising more animals means more profit. Both machines can be optimized, but that just allows more production for the same energy use. There's no incentive to reduce energy consumption unless some other factor bounds the machine's capacity (for example lack of materials, hardware, labor)
Capitalism in general is a machine for consuming natural resources and converting them to profit as quickly as possible.
I can setup a dozen nodes on AWS and build a crypto with a million times the transaction capacity of Bitcoin. Obviously the downside to this is centralization; someone can be banned or censoredfor any reason.
Blockchains are first decentralized, permissionless, censorship resistant solutions.
Bitcoin is the defacto main cryptocurrency and Visa is one of the main payment processors.
A cryptocurrency not attached to anything else is useless. I'm sure you could easily beat Visa too by having a little app that "processes transactions" on some modern 5nm scale mobile device. But it wouldn't be real world useful.
Yes, moving money to protect it from hyperinflation. Protecting it from being seized or appropriated by corrupt regimes.
Bitcoin moves money very well in those contexts, can Visa do those things?
Because humans are deciding on whether to use BTC or another option for handling payments. This means that we must decide whether "decentralization, permissionlessness, and censorship resistance" are worth the astronomical other costs.
M1 Money supply graph.
As your purchasing power gets eroded away ("stolen" by central banks), we each decide for ourselves how much we want to participate in the propping up a broken system.
See https://xrpl.org/carbon-calculator.html instead and ignore visa/mastercard
PoW is still the worst even worse than than paper money.
They seem to equate kwh to some co2 emissions value and just multiplies them to create a comparative value.
The conversation is just multiplied yes.
If there really were global demand for a censorship resistant currency don’t you think there would be more merchants accepting BTC by now?
1/ There are four stages that all market-based monetary goods pass through in their evolution to becoming a fully fledged money:
1. Collectible 2. Store of Value 3. Medium of exchange 4. Unit of account
Rai stones were used by islanders as a ledger and store of value. https://en.wikipedia.org/wiki/Rai_stones
Is the energy consumption of VISA transactions calculated based on their servers energy consumption?
So now what about the energy consumption of the whole VISA company?
Visa has 19,500 employees https://en.wikipedia.org/wiki/Visa_Inc.
Does Bitcoin employees 19500 people full-time to work? Time is interchangeable with money and money with electricity/CO2 emissions.
Ok - but then you need to include all the exchanges and wallet developers etc.
https://en.wikipedia.org/wiki/Visa_Inc.
Does Bitcoin employees 19500 people full-time to work? Time is interchangeable with money and money with electricity/CO2 emissions
Maybe, when you include all the miners and the other parts of the ecosystem needed to make Bitcoin available for use.
Yes indeed we should consider all factors. For Bitcoins we should count the number of active full-time people employed as miners and developers.
I feel like the amount of people required to maintain a system should be counted in green efforts. Like for example bio supermarkets they provide you with products without packaging. Example you get your cereals from a giant glass container to your reusable container. Now that requires extra effort on handling/trasportation/refrigeration/storage. If all those things require a lot of more time we should consider the time of X people vs the saving in Y plastic or the saving in Z plastic.
It might turn out that Bitcoin employees less/equal/more people time for transaction. People's time is very expensive.
Previous discussion on this:
https://xrpl.org/carbon-calculator.html (scroll to the bottom)
Compares BTC/ETH/XRP/VISA/MASTERCARD and Paper Money
I wound not interpret too much into the actual values they are unlikely to be very accurate.
Fine, add 0.00000000000001% for the energy a wire transfer takes to net out hundreds of millions of credit card transactions.
While the traditional financial infrastructure is under doing rapid modernization, my layman eye still see lots of manual intervention for compliance, enforcement, etc...
I went through a bitcoin phase in mid 2017 and that's what we used it for back then. Lightning network adoption is just around the corner! It'll solve high fees and do billions of transactions per day!
Miners load hash rate to get a better chance at the next block, the transactions just go along for the ride.
This would be true regardless of how much hash power is cumulative.
For example, early Bitcoin was generally, for purposes of discussion, about the same transaction throughput as we have today. But there were very few miners, so the energy costs were very low. Was Bitcoin truly many orders of magnitude more efficient back then? No.
It’s simply that there are many many more miners competing for rewards, because Bitcoin is valuable. There’s an energy lottery built into the Bitcoin protocol that emits new currency.
This lottery is directly related to the security of the network but not the number of transactions or usage. Unfortunately it’s hard to find an exact parallel but something like the military protection of the dollar would be a more valid comparison than Visa’s transaction volume.
Consider this: even if the blocks were empty, which means no transactions, the energy usage would be the same.
That's what hash power does.
If anybody's interested, here is a careful analysis of Bitcoin's carbon foot print (2019): https://www.sciencedirect.com/science/article/pii/S254243511...
TL;DR: While there is this "energy consumption of Argentina" number in circulation implying Bitcoin's carbon emissions equates that of a whole developed country, in reality this number is closer to that of Kansas City.
I actually I would love to see some Bitcoin miners to comment about this whole topic more often on HN. I know at least some of them should be lurking here but for some reason decide to keep completely silent.
How much does it cost to create a US dollar, to be able to have transactions with it? Did it take 100 years of faith in the US credit to establish that? How much energy was that?
All that's relevant is what it costs now or else we're going back to the beginning of the universe
In truth, if I factor in the establishment of the United States and several hundred years of money policy, it'll be higher. But for a fair comparison with Bitcoin, that'd be unfair, right? Because the US's money policy is obviously historically tied to Britain's, so I should include that too. And Britain was adapting the system that was established in feudal times. A lot of work went into making fiat currency real.
So a fair comparison would be Bitcoin versus the cost to print money, plus the history of the US currency system, UK, and all of monetary history before that. This is starting to look pretty bad!
Would the U.S. Treasury disappear if we switched to Bitcoin? (Hint: look at countries that don't have their own currency. They still collect taxes and spend and borrow money.)
If we're counting the footprint of Visa's 19,500 employees [1], we'd have to start counting the footprint of every Bitcoin miner and ASIC manufacturer. Which is (a) silly and (b) unlikely to affect a difference of orders of magnitude.
Do they have 1000s of office all around the world with 100s of thousands working in offices and branches like banking industry?
Banking does a lot more than payments. Most people working at banks do not work on payments.
I remember reading that the extra food that a cyclist consumes, and the energy required to grow and transport it, far exceeds the energy that is used by a bus per passenger.
Humans are high maintenance machines, and cryptocurrency, in automating previously manual processes done by humans, could potentially result in major energy savings. But not in Bitcoin's iteration, where it's consuming as much energy as whole countries, to process only 300,000 transactions a day.
https://jamie-dyer.medium.com/why-i-hate-bitcoin-38fad90b37e...
Except you're comparing all the "real things" that make up the US economy to Bitcoin where the energy usage is just for Bitcoin (discovering coins and doing transactions). The statement you quoted seems entirely disingenuous.
Bitcoin has a lot going for it. But these arguments are so incredibly stupid.
Would the energy sector go away if the U.S. switched to Bitcoin? The American economy? No? Then it isn't a cost inherent to the U.S. dollar.
Bitcoin is just a distributed ponzi scheme.