Summary

• You can save --% energy per transaction
  by using Bitcoin Cash (BCH) instead of Bitcoin (BTC)
• If the Bitcoin Cash (BCH) blocks is fully used for payments,
  the energy cost per transaction gets as low² as $--
• If the Bitcoin (BTC) blocks get filled¹ with payments,
  the transactional energy cost alone will still be $--

Assumptions

1. A typical payment takes up - bytes.
2. The average miner uses - joule per TH.
3. Miners pay an energy costs of - ¢ per kWh.
4. Non-mining energy costs is insignificant.

Energy statistics BTC BCH

Total energy consumption (kilowatthours / day)

• Estimate based on last 24 hours - Wh - Wh

Energy consumption per transaction (kilowatthours / transaction)

• Estimate based on last 24 hours - Wh - Wh
• Optimal based on full blocks¹ - Wh - Wh

Fee market statistics BTC BCH

Cost per transactions (US cent / transaction)

• Energy cost - ¢ - ¢
• Paid fee - ¢ - ¢
• Optimal cost based on full blocks¹ - ¢ - ¢

Network statistics BTC BCH

Hashrate (Terahashes / second)

• Estimated² based on last 24 hours - Th - Th

Transactions (transactions / day)

• Measured³ from the last 24 hours - -
• Optimal based on full blocks¹ - -

Blockspace (bytes)

• Measured³ from the last 24 hours - -
• Optimal based on full blocks¹ - b - b

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¹ Bitcoin (BTC) is calculated with a 2mb blocksize to accomodate the space from segwit.
² Optimal energy efficiency is still far from ideal, and needs to be improved significantly.
³ Measured statistics was fetched with the Blockchair API.