Per day 450 Bitcoin are mined, each Bitcoin contains 100,000,000 Satoshi's. So per day 45,000,000,000 Satoshis are mined.

The current mining hash rate today is around 800 EH/s or

800,000,000,000,000,000,000

100 Terra hashes currently uses about 3KW of electricity, so 800 EH / 100 TH = 8,000,000 * 3,000 = 24,000,000,000 W = 24 GW per hour

x 24 Hours 576 GW per day or

576,000,000,000 Watts

So 45 Giga Satoshi / 576 GW = 0.078125 GW

= 78,125,000 W per Satoshi

But that's ignoring the prime purpose of mining which is to secure the transactions in the blockchain which is 99% of the utility.

So the typical transaction throughput per day is 480,000 transaction.

Each transaction value can be between $1 to $1Bn, so we can't really estimate that, so if we divide down the Watts per Satoshi and give an equal ranking to transactions, then

78,125,000 / 480,000 = 162W per Satoshi Transaction

I'm going to give this a Symbol "ST", so we have

162 Watts per ST