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比特币“挖矿”年耗电量已超越伊拉克 逼近新加坡
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Topic: 比特币“挖矿”年耗电量已超越伊拉克 逼近新加坡 (Read 78 times)
dudu131418
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比特币“挖矿”年耗电量已超越伊拉克 逼近新加坡
February 12, 2018, 01:06:01 PM
#1
比特币能源消耗指数的最新数据(截至2月10日)显示,比特币挖矿的年耗电量预计约为48.37太瓦时 (TW, 万亿瓦时) ,相当于全球耗电量的0.20%,且随着时间推移还在持续稳步增长
中本聪最初在2008年白皮书中设下的2100万枚比特币供应总量,在自2009年1月3日问世的九年后,目前已经“挖掘”超过80%,通过全球各地的比特币“矿场”,进入市场流通。
“挖矿”,其实就是利用芯片的计算能力 ("hashpower"),在比特币全球网络的区块中不断进行“哈希碰撞”,比竞争对手更快地求解,以此赢得在公开账簿上的记账权,获得系统奖励的比特币。这一不断重复的枯燥过程,在比特币行业被形象地称作“挖矿”。
随着时间的推移,比特币产生数量将越来越少。2009年“创世区块”给予矿工的奖励是50枚比特币;而今天挖出新区快的矿工酬劳已经降至12.5枚比特币。未来“开采”新的比特币区块,对矿机的算力要求越来越高,设备也越来越昂贵,作为成本大头维持矿场运作的电费也愈来愈高。
今年1月10日,比特币挖矿的年耗电量预计还仅是39.84太瓦时。短短的一个月后,这一数字就已攀升近10太瓦时至现在的48.37太瓦时,“开采”新区快对电力的“胃口”增长,远远超出正常国民用电的需求。
48.37太瓦时是一个什么概念?全球用电量排名第54的伊拉克,全国国民也不过44.4太瓦时,目前已被比特币挖矿反超;而按照目前的趋势,比特币挖矿耗电量要超越排名第52位的繁忙岛国新加坡(49.5太瓦时),不过就是春节后的事情。
摩根士丹利股票分析师Nicholas Ashworth1月10日研报中曾预计,2018年全年比特币乃至其他数字货币的挖矿用电需求最高将达到140太瓦时,比现在的预计耗电量还要再翻上两番,达到全球总用电量的0.6%。
这也意味着,未来的十个多月中,平均每个月比特币的预计耗电量将增长逾8太瓦时。要知道中国2018年全年的新增装机量也不过120千兆瓦 (GW),不过1太瓦时的五分之一!
在与其他新兴产业进行横向对比时,结论则更为惊人。众所周知,电动车/新造车概念是2017年炙手可热的新兴概念;大摩此前预计电动车在欧洲的率先普及使用,将在2018年带来1-2万亿瓦时的电力需求,到2025年达到25万亿瓦时,而全球电动车用电需求则将达到125万亿瓦时。
也就是说,电动车行业的电力需求要到2025年,才堪堪达到今年数字货币“挖矿”的需求水平!据此Ashworth给出了“比特币2018=电动车2025”的用电需求论断,认为2018年电力产业的热点话题将让位给比特币和其他数字货币的“挖矿需求”。
linlin69708
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Re: 比特币“挖矿”年耗电量已超越伊拉克 逼近新加坡
February 12, 2018, 01:08:59 PM
#2
随着时间的推移,比特币产生数量将越来越少
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