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Quick google search will help you out. Ill do one for you: https://cointelegraph.com/news/study-over-74-of-bitcoin-mining-is-powered-by-renewable-energy https:

• sodality2 6y ago
  >Cryptocurrency investment products and research firm CoinShares estimates Forgive my skepticism, but this seems biased. Would they not benefit from a positive outlook on BTC?
• endisneigh 6y ago
  The report is pretty weak (https://coinshares.co.uk/assets/resources/Research/bitcoin-mining-network-june-2019-fidelity-foreword.pdf https://coinshares.co.uk/assets/resources/Research/bitcoin-m...) Basically they say mining is reported in areas that have certain levels of renewable energy therefore the bitcoin was mined using the renewable energy. Finally, the report says they made no attempt to verify any of the numbers they claim so the entire thing is worthless IMHO. I won't even bother pointing out the conflict of interest of the entire report to begin with... > It is necessary at this point to caveat that while we do our utmost to accurately pinpoint the location of global mining centres, the Bitcoin mining industry remains a highly private and secretive industry. As a result, our estimates may be subject to significant potential uncertainty. While we have made no attempt to formally quantify these uncertainly levels, we intuitively guesstimate that, e.g. our renewables penetration figures should be taken to include a tentative uncertainty of around ±10%. Even if that's true, it's still a waste of energy
  • trident5000 6y ago
    Ok, make your own report if you're going to reject whats presented to you. Ill wait. Otherwise dont make the counter argument if you have nothing other than your opinion with no merit behind it.