Is there ways to calculate it?
According to :
https://blockchain.info/charts/hash-rateThe Hashrate per second is 7,700,000 ~ 8,000,000 Terahash/second
With 12.5 Bitcoin/Block reward, 10 Minute Block Time , results 1800 BTC Mined/Day
Based on current price, around $6,500,000 ~ $7,000,000 in BTC is mined.
1) How could i calculate how much is spent in electricity / day?
2) Is the current Reward in Bitcoin - Electricity Price of mining = Positive profit?
Thanks
It is impossible to know the exact costs of the electricity that is used daily for bitcoin mining, since the electricity rates are different in every country and even within a country there are different rates. You can estimate it by taking the avarage cost for electricty for each country and multiply it by the total hashrate that country has. Do this for every country that mines btc and add all values together and you will have your answer.